Masterbatch stacking and film covering device

Abstract

The present invention relates to the technical field of film covering devices, and discloses a film covering device for a masterbatch stack, comprising: a supporting mechanism for supporting a stack; a bottom film covering mechanism comprising a frame, wherein a film feeding assembly, a film cutting assembly, and a film pulling assembly are sequentially installed on the frame along the transmission direction of the film material; the bottom film covering mechanism is used to cover a bottom film on the supporting mechanism, wherein the bottom film is located between the supporting mechanism and the stack; a top film covering mechanism is used to cover a top film on the stack, wherein the bottom end of the top film overlaps and fits with the bottom film, and the top film covering mechanism and the top film covering mechanism are sequentially arranged along the transmission direction of the conveyor line. By using the film covering device for a masterbatch stack according to the present invention, the bottom film covered by the bottom film covering mechanism and the top film covered by the top film covering mechanism are surrounded to form a fully enclosed film covering, which completely covers the stack, and external moisture and dust are blocked by the film covering mechanism and cannot contact the stack, so that the stack is not easily affected by moisture or contamination.

Description

Technical Field

[0001] The present invention relates to the field of film sleeve devices, and more particularly to a film sleeve device for stacking masterbatch. Background Art

[0002] Masterbatch is a polymer colorant composed of a high proportion of pigment (20%-80%), a carrier resin, and various additives (such as dispersants, antistatic agents, flame retardants, etc.). Masterbatch stacks are a stacked structure formed by stacking quantitatively packaged masterbatch bags. Masterbatch stacks are usually covered with film to secure the stacks on pallets, improving their stability and facilitating their transportation.

[0003] Chinese patent publication number CN205891430U discloses a cold-drawn shrouding machine, comprising a frame and a film-hanging assembly, a film-feeding assembly, a heat-sealing and film-cutting assembly, a film-opening assembly, a film-drawing assembly, and a film-shrouding assembly, all supported on the frame. The film-hanging assembly is located on the side of the frame, supporting and securing the film roll. The film-feeding assembly is located at the top of the frame, feeding film to the film-opening assembly. The heat-sealing and film-cutting assembly and the film-opening assembly are located below the film-feeding assembly. The film-drawing assembly moves up and down along the frame, and the film-shrouding assembly is located at the bottom of the frame. This technology uses a cold shrink film drum roll and applies the top film to the stack through the processes of film-feeding, film-opening, heat-sealing, film-cutting, film-collecting, film-drawing, and film-shrouding. However, after the top film is applied, the bottom of the stack is open, allowing moisture and dust from the outside to enter the cavity enclosed by the top film and come into contact with the stack, making the stack susceptible to moisture and contamination, resulting in poor preservation of the masterbatch stack. Summary of the Invention

[0004] The purpose of the present invention is to overcome the defects in the prior art and provide a color masterbatch stack film covering device for performing fully closed film covering on the color masterbatch stack.

[0005] To achieve the above object, the technical solution of the present invention is to provide a masterbatch stacking and film coating device, comprising:

[0006] A supporting mechanism for supporting the stack;

[0007] The bottom film covering mechanism comprises a frame, on which a film feeding assembly, a film cutting assembly and a film pulling assembly are sequentially installed along the transmission direction of the film material. The bottom film covering mechanism is used to cover the bottom film on the supporting mechanism, and the bottom film is located between the supporting mechanism and the stack;

[0008] A top film sleeve mechanism is used to sleeve a top film on the stack, wherein the bottom end of the top film overlaps and fits with the bottom film to form a film sleeve that completely wraps the stack;

[0009] The conveying line is used to convey the supporting mechanism, and the bottom film covering mechanism and the top film covering mechanism are arranged in sequence along the conveying direction of the conveying line.

[0010] By using the masterbatch stacking film device described in the present invention, the bottom film provided by the bottom film mechanism and the top film provided by the top film mechanism are enclosed to form a fully enclosed film sleeve, which completely wraps the stack. External moisture and dust are blocked by the film sleeve and cannot come into contact with the stack. The stack is not easily affected by moisture or contamination. The fully enclosed film sleeve can also effectively prevent insects and rodents from drilling in from the bottom, reducing the risk of biological contamination and greatly improving the preservation effect of the stack.

[0011] Preferably, a roll holder is provided on the outside of the frame, on which the rolled film is rotatably mounted. The film is elastic, and a plurality of elastic ribs in a square ring structure are provided within the film. With this design, after the base film is sleeved on the support mechanism, the elastic ribs can secure the base film to the support mechanism, preventing it from falling off.

[0012] Preferably, the film conveying assembly includes a rotary drive member fixedly mounted on the frame, and a driving roller and a driven roller rotatably mounted on the frame, wherein the output end of the rotary drive member is drivingly connected to the driving roller. With this design, the rotary drive member can drive the driving roller to rotate, and the driving roller and the driven roller cooperate to convey the film material.

[0013] Preferably, the elastic ribs include two longitudinal ribs parallel to the length of the active roller, and both the active roller and the driven roller are provided with strip grooves that mate with the longitudinal ribs. This design prevents the film feed assembly from being stuck by the longitudinal ribs and from being excessively squeezed during film material transport.

[0014] Preferably, the elastic ribs further include two transverse ribs perpendicular to the length of the active roller, and both the active roller and the driven roller are provided with annular grooves that mate with the transverse ribs. This design prevents the film feed assembly from being stuck by the transverse ribs and from being excessively squeezed during film material transport.

[0015] Preferably, the film cutting assembly includes a telescopic drive fixedly mounted on the frame, a cutter drivingly connected to the telescopic drive, and a backing plate fixedly connected to the frame, the backing plate being provided with a cutting groove that cooperates with the cutter. With this design, the telescopic drive drives the cutter to cut into the cutting groove, thereby dividing the film material.

[0016] Preferably, a support plate is fixedly mounted on the side of the pad away from the film delivery assembly. With this design, the support plate can provide support for the film material unit to prevent the film material unit from falling.

[0017] Preferably, the film-stretching assembly includes a first film-stretching unit, a second film-stretching unit, a third film-stretching unit, and a fourth film-stretching unit connected to the frame, the transmission direction of the film material is perpendicular to the transmission direction of the supporting mechanism, the first film-stretching unit and the second film-stretching unit are sequentially arranged along the transmission direction of the film material, and the third film-stretching unit and the fourth film-stretching unit are sequentially arranged along the transmission direction of the supporting mechanism;

[0018] The first film-stretching unit and the second film-stretching unit cooperate to transfer the film material unit to directly above the supporting mechanism, and the first film-stretching unit, the second film-stretching unit, the third film-stretching unit and the fourth film-stretching unit cooperate to stretch the film material unit and put the film material unit on the supporting mechanism to form the bottom film.

[0019] With this design, the first film-stretching unit, the second film-stretching unit, the third film-stretching unit and the fourth film-stretching unit can stretch the film material unit to ensure that the elastic ribs can be sleeved around the supporting mechanism.

[0020] Preferably, the supporting mechanism includes a pallet, a dolly, and a two-way airflow control assembly, wherein the pallet is stacked on the dolly, the top edge of the dolly protruding from the bottom edge of the pallet, and the two-way airflow control assembly is fixedly mounted within the dolly. The two-way airflow control assembly is provided with a first air pipe and a second air pipe facing in all directions, the opening of the first air pipe is located within the pallet, and the opening of the second air pipe is located within the dolly. With this design, when a stack is transferred by a forklift, only the pallet is transferred with the stack, and the dolly and the two-way airflow control assembly can be recycled, which helps to reduce costs.

[0021] Preferably, the bidirectional airflow control assembly includes a first fan, a second fan, a first annular tube, and a second annular tube. The first fan and the second fan are both fixedly mounted within the pad. The air intake of the first fan, the air outlet of the second fan, and the first air tube are all connected to the first annular tube. The air outlet of the first fan, the air intake of the second fan, and the second air tube are all connected to the second annular tube. This design enables bidirectional airflow control by controlling the activation of either the first fan or the second fan.

[0022] The beneficial effects of the present invention are:

[0023] 1. By using the masterbatch stacking film device described in the present invention, the bottom film provided by the bottom film mechanism and the top film provided by the top film mechanism are enclosed to form a fully enclosed film sleeve, which completely wraps the stack. External moisture and dust are blocked by the film sleeve and cannot come into contact with the stack. The stack is not easily affected by moisture or contamination. The fully enclosed film sleeve can also effectively prevent insects and rodents from drilling into it from the bottom, reducing the risk of biological contamination and greatly improving the preservation effect of the stack.

[0024] 2. By arranging strip grooves and annular grooves on the active roller and the driven roller, the film feeding assembly will neither be stuck by the elastic ribs nor be over-extruded during the film material conveying process.

[0025] 3. By setting up a two-way airflow control component, after the top film is set, the first air pipe is used for suction and the second air pipe is used for blowing, which can make part of the bottom film turn up and cover the bottom edge of the top film, thereby improving the connection strength between the top film and the bottom film and improving the stability of the film sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure of the masterbatch stacking and film covering device;

[0027] Figure 2 It is the plane expansion diagram of the film material (the part in the dotted box in the figure is the film material unit);

[0028] Figure 3 It is a schematic diagram of the three-dimensional structure of the frame and film delivery assembly;

[0029] Figure 4 It is a schematic diagram of the three-dimensional structure of the active roller and the driven roller;

[0030] Figure 5 It is a schematic diagram of the three-dimensional structure of the frame and membrane cutting components;

[0031] Figure 6 It is a side cross-sectional schematic diagram of the frame and the membrane cutting assembly;

[0032] Figure 7 yes Figure 6 A magnified view of the structure at center A;

[0033] Figure 8 It is a schematic diagram of the three-dimensional structure of the cutter;

[0034] Figure 9 It is a three-dimensional structural diagram of the frame and film pulling assembly;

[0035] Figure 10 is a schematic diagram of the three-dimensional structure of the second clamping member;

[0036] Figure 11 It is a schematic diagram of the three-dimensional structure of the sliding splint;

[0037] Figure 12 It is a schematic diagram of the three-dimensional structure of the supporting mechanism;

[0038] Figure 13 This is a schematic diagram of the main cross-section after the supporting mechanism is sleeved with the base film and stacked;

[0039] Figure 14 yes Figure 13 A magnified view of the structure at B in the middle;

[0040] Figure 15 It is a schematic diagram of the three-dimensional structure of the supporting mechanism stacking and sleeved bottom film and top film;

[0041] Figure 16 yes Figure 15 A magnified view of the structure at center C;

[0042] Figure 17 It is a schematic diagram of the three-dimensional structure of the bidirectional airflow control component.

[0043] In the figure: 100, supporting mechanism; 110, tray; 120, pad; 121, stopper; 130, two-way airflow control assembly; 131, first air pipe; 132, second air pipe; 133, first fan; 134, second fan; 135, first annular pipe; 136, second annular pipe;

[0044] 200, bottom film sleeve mechanism; 210, frame; 220, film feeding assembly; 221, rotary drive member; 222, active roller; 223, driven roller; 224, strip groove; 225, annular groove; 226, guide roller; 230, film cutting assembly; 231, telescopic drive member; 232, cutter; 233, pad; 2331, cutting groove; 234, pressure plate; 2341, first guide rod; 235, compression spring; 236, knife holder; 2361, first through hole; 240, support plate; 250, first film pulling unit; 251, first driving guide rail; 252, first slider; 253, first slide plate; 254, first hydraulic cylinder; 255, first clamping member; 260, first Second film-pulling unit; 261, second drive rail; 262, second slider; 263, second slide; 264, second hydraulic cylinder; 265, second clamping member; 2651, fixed clamping plate; 2652, second guide rod; 2653, sliding clamping plate; 2654, second through hole; 2655, cylinder; 270, third film-pulling unit; 271, third drive rail; 272, third slider; 273, third slide; 274, third hydraulic cylinder; 275, third clamping member; 280, fourth film-pulling unit; 281, fourth drive rail; 282, fourth slider; 283, fourth slide; 284, fourth hydraulic cylinder; 285, fourth clamping member; 290, roll holder;

[0045] 300, top film mechanism;

[0046] 400, conveyor line;

[0047] 500, stack;

[0048] 600, film material; 601, film material unit; 602, area to be cut; 610, elastic ribs; 611, longitudinal ribs; 612, transverse ribs;

[0049] 700, film sleeve; 710, bottom film; 720, top film;

[0050] 800, palletizing mechanism;

[0051] 900. Belt conveyor. DETAILED DESCRIPTION

[0052] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that these embodiments are discussed to enable those skilled in the art to better understand and implement the subject matter described herein. The functions and arrangements of the elements discussed may be varied without departing from the scope of protection of this specification. Various examples may omit, substitute, or add various processes or components as needed. In addition, features described with respect to some examples may also be combined in other examples.

[0053] In order to better understand the present invention, Figures 1-17 The masterbatch stacking and film covering device of the present invention is described in detail.

[0054] Example 1:

[0055] like Figure 1 As shown, the masterbatch stacking and film covering device includes:

[0056] A supporting mechanism 100 for supporting the stack 500;

[0057] The bottom film covering mechanism 200 includes a frame 210. The frame 210 is sequentially mounted with a film feeding assembly 220, a film cutting assembly 230, and a film pulling assembly along the conveying direction of the film material 600. The bottom film covering mechanism 200 is used to cover the bottom film 710 on the supporting mechanism 100. The bottom film 710 is located between the supporting mechanism 100 and the stack 500.

[0058] The top film sleeve mechanism 300 is used to sleeve a top film 720 on the stack 500. The bottom end of the top film 720 overlaps and fits with the bottom film 710 to form a film sleeve 700 that completely wraps the stack 500.

[0059] The conveying line 400 is used to convey the supporting mechanism 100 , the bottom film covering mechanism 200 and the top film covering mechanism 300 , which are sequentially arranged along the conveying direction of the conveying line 400 .

[0060] It should be noted that a palletizing mechanism 800 is provided between the bottom film covering mechanism 200 and the top film covering mechanism 300, and a belt conveyor 900 is provided outside the conveyor line 400. The belt conveyor 900 is used to convey the masterbatch bags, and the belt conveyor 900 penetrates into the palletizing mechanism 800;

[0061] The support mechanism 100 is placed on the conveyor line 400, which sequentially passes through the bottom film-wrapping mechanism 200, the palletizing mechanism 800, and the top film-wrapping mechanism 300. The conveyor conveys the support mechanism 100 into the bottom film-wrapping mechanism 200. The bottom film-wrapping mechanism 200 wraps the bottom film 710 on the support mechanism 100. The bottom film 710 covers the top surface of the support mechanism 100 and at least a portion of the area around the support mechanism 100.

[0062] Afterwards, the conveyor line 400 conveys the supporting mechanism 100 with the base film 710 to the palletizing mechanism 800. The palletizing mechanism 800 transfers the masterbatch bags on the belt conveyor 900 to the supporting mechanism 100 and stacks the masterbatch bags on the base film 710 to form a stack 500.

[0063] Then, the conveyor line 400 conveys the supporting mechanism 100 carrying the stack 500 into the top film sleeve mechanism 300, and the top film sleeve mechanism 300 sets a top film 720 on the stack 500. The top film 720 covers the top surface of the stack 500, the four sides of the stack 500, and at least a part of the area around the supporting mechanism 100. The top film 720 and the bottom film 710 covering the parts around the supporting mechanism 100 overlap and fit together, so that the top film 720 and the bottom film 710 enclose to form a film sleeve 700 that completely wraps the stack 500. The film sleeve 700 is fully enclosed, and the entire stack 500 is located inside the film sleeve 700.

[0064] In this embodiment, the conveying line 400 is configured as a roller conveyor.

[0065] The specific structures and principles of the stacking mechanism 800 and the top film covering mechanism 300 are all existing technologies and will not be repeated here. For example, the stacking mechanism 800 can select a universal high-position stacking system integrated machine disclosed in Chinese patent publication number CN119284552A, and the top film covering mechanism 300 can select a cold-drawn film covering machine disclosed in Chinese patent publication number CN205891430U.

[0066] By using the color masterbatch stack 500 film covering device of the present invention, the bottom film 710 covered by the bottom film covering mechanism 200 and the top film 720 covered by the top film covering mechanism 300 are enclosed to form a fully enclosed film cover 700, which completely wraps the stack 500. External moisture and dust are blocked by the film cover 700 and cannot come into contact with the stack 500. The stack 500 is not easily affected by moisture or contamination. The fully enclosed film cover 700 can also effectively prevent insects and rodents from drilling in from the bottom, reducing the risk of biological contamination and greatly improving the preservation effect of the stack 500.

[0067] Example 2:

[0068] As an optimization of Example 1, Figure 1 and Figure 2 As shown, a material roll holder 290 is provided on the outside of the frame 210, and a rolled film material 600 is rotatably mounted on the material roll holder 290. The film material 600 is elastic, and a plurality of elastic ribs 610 of a square ring structure are provided inside the film material 600 at intervals.

[0069] It should be noted that the film material 600 is a stretchable plastic film. The material of the film material 600 can be selected from materials with good elasticity and sealing properties such as polyethylene (PE) and polyvinyl chloride (PVC). A plurality of elastic ribs 610 are distributed in a linear array along the length direction of the film material 600. The elastic ribs 610 can be configured as rubber ribs. The film material 600 can be manufactured by a sandwich rubber rib composite process. The film material 600 is rolled into a roll and installed on the roll holder 290.

[0070] In the natural state, the length of the elastic rib 610 is smaller than the length of the supporting mechanism 100, and the width of the elastic rib 610 is smaller than the width of the supporting mechanism 100. The film feeding assembly 220 drives the film material 600 to move toward the film cutting assembly 230. The film cutting assembly 230 cuts the film material 600 into film material units 601. The film pulling assembly stretches the four sides of the film material unit 601 so that the length and width of the elastic rib 610 are respectively greater than the length and width of the supporting mechanism 100. After the film pulling assembly puts the film material unit 601 on the supporting mechanism 100, the film material unit 601 forms a bottom film 710. After the film pulling assembly releases the bottom film 710, the elastic rib 610 contracts and fixes the bottom film 710 on the supporting mechanism 100 to prevent the bottom film 710 from falling off.

[0071] In this embodiment, a guide roller 226 is rotatably mounted on the frame 210 . The guide roller 226 is located on the side of the film feeding assembly 220 away from the film cutting assembly 230 . The guide roller 226 is used to guide the feeding of the film material 600 .

[0072] Example 3:

[0073] As an optimization of Example 2, Figure 1 and Figure 3As shown, the film feeding assembly 220 includes a rotary driving member 221 fixedly mounted on the frame 210 , and an active roller 222 and a driven roller 223 rotatably mounted on the frame 210 . The output end of the rotary driving member 221 is drivingly connected to the active roller 222 .

[0074] It should be noted that the rotating drive member 221 is configured as a servo motor, and the output end of the servo motor is fixedly connected to one end of the active roller 222 through a coupling, thereby driving the active roller 222 to rotate. The active roller 222 and the driven roller 223 jointly press the film material 600. As the active roller 222 rotates, the film material 600 is transported toward the direction of the film cutting assembly 230, and the driven roller 223 rotates in the opposite direction to the active roller 222.

[0075] In this embodiment, the active roller 222 is located directly above the driven roller 223 , and the film material 600 is passed through the active roller 222 and the driven roller 223 . The gap between the active roller 222 and the driven roller 223 is slightly smaller than the thickness of the film material 600 .

[0076] Example 4:

[0077] As an optimization of Example 3, Figure 2 and Figure 4 As shown, the elastic rib 610 includes two longitudinal ribs 611 parallel to the length direction of the active roller 222 , and both the active roller 222 and the driven roller 223 are provided with strip grooves 224 that cooperate with the longitudinal ribs 611 .

[0078] It should be noted that the active roller 222 and the driven roller 223 are exactly the same in shape, structure and size. The active roller 222 and the driven roller 223 jointly compress and transmit the film material 600. When the longitudinal ribs 611 are transmitted between the active roller 222 and the driven roller 223, the longitudinal ribs 611 are accommodated in the strip grooves 224 of the active roller 222 and the strip grooves 224 of the driven roller 223, ensuring that during the transportation of the film material 600, the film feeding assembly 220 will neither be stuck by the longitudinal ribs 611 nor over-extruded. The film material 600 and the longitudinal ribs 611 are not easily damaged.

[0079] In this embodiment, a plurality of strip grooves 224 are provided. The plurality of strip grooves 224 on the active roller 222 are distributed in a circular array around the axis of the active roller 222 , and the plurality of strip grooves 224 on the driven roller 223 are distributed in a circular array around the axis of the driven roller 223 to ensure stable cooperation between the longitudinal ribs 611 and the strip grooves 224 .

[0080] Example 5:

[0081] As an optimization of Example 4, Figure 2 and Figure 4As shown, the elastic ribs 610 further include two transverse ribs 612 perpendicular to the length direction of the active roller 222 , and both the active roller 222 and the driven roller 223 are provided with an annular groove 225 that cooperates with the transverse ribs 612 .

[0082] It should be noted that the two transverse ribs 612 and the two longitudinal ribs 611 are connected end to end to form an elastic rib 610 with a square ring structure. There are two annular grooves 225 on the active roller 222 and two annular grooves 225 on the driven roller 223. One of the annular grooves 225 on the active roller 222 cooperates with one of the annular grooves 225 on the driven roller 223 to form a channel for facilitating the passage of one of the transverse ribs 612. The other annular groove 225 on the active roller 222 cooperates with the other annular groove 225 on the driven roller 223 to form a channel for facilitating the passage of the other transverse rib 612, thereby ensuring that during the transportation of the film material 600, the film feeding assembly 220 will neither be stuck by the transverse rib 612 nor over-extruded the transverse rib 612, and the film material 600 and the transverse rib 612 are not easily damaged.

[0083] Example 6:

[0084] As an optimization of Example 5, Figure 1 、 Figure 2 、 Figure 5 Figure 6 、 Figure 7 and Figure 8 As shown, the film cutting assembly 230 includes a telescopic driving member 231 fixedly mounted on the frame 210, a cutter 232 driven and connected to the telescopic driving member 231, and a pad 233 fixedly connected to the frame 210, the pad 233 being provided with a cutting groove 2331 cooperating with the cutter 232.

[0085] It should be noted that there are two telescopic drive members 231, and the telescopic ends of the two telescopic drive members 231 are respectively connected to the two ends of the cutter 232, thereby stably driving the cutter 232 to move toward or away from the pad 233. The film material 600 passes between the cutter 232 and the pad 233, and the film material 600 passes between the active roller 222 and the driven roller 223 and falls on the pad 233. The pad 233 provides support for the film material 600.

[0086] The film material interval between two adjacent elastic ribs 610 is the area 602 to be cut of the film material 600. As the film material 600 is transmitted, when the cutter 232 is aligned with the area 602 to be cut, the telescopic drive member 231 drives the cutter 232 to move toward the pad 233 until the cutter 232 cuts into the cutting groove 2331, cutting the film material 600 into film material units 601. After cutting is completed, the telescopic drive member 231 drives the cutter 232 to reset.

[0087] In this embodiment, the telescopic driving member 231 is configured as an oil cylinder, the backing plate 233 is located directly below the cutter 232, and the cutter 232 has a knife seat 236. The telescopic ends of the two telescopic driving members 231 are fixedly connected to the two ends of the knife seat 236 respectively, and the film cutting assembly 230 also includes a pressure plate 234 and a compression spring 235. There are two pressure plates 234, which are respectively located on both sides of the cutter 232. The pressure plate 234 slides with the first through hole 2361 of the knife seat 236 through the first guide rod 2341. One end of the compression spring 235 is fixedly connected to the knife seat 236, and the other end of the compression spring 235 is fixedly connected to the pressure plate 234; in the natural state, the distance between the top surface of the backing plate 233 and the bottom surface of the pressure plate 234 is smaller than the distance between the top surface of the backing plate 233 and the bottom tip of the cutter 232;

[0088] The oil cylinder drives the cutter 232 to move downward. First, the pressure plate 234 contacts the film material 600, the compression spring 235 is compressed, and the pressure plate 234 and the pad 233 jointly press the film material 600 on both sides of the area to be cut 602. Then, the cutter 232 contacts the film material 600 in the area to be cut 602. As the cutter 232 cuts into the cutting groove 2331, the cutter 232 cuts off the film material 600 in the area to be cut 602. During this process, the compression spring 235 continues to be compressed. After the cutting is completed, as the cutter 232 is reset, the pressure plate 234 is also reset, and the compression spring 235 returns to its initial state.

[0089] By providing the pressing plate 234 and the compression spring 235 , the film material 600 on both sides of the to-be-cut area 602 is pressed and fixed before the film material 600 is cut, which is beneficial to improving the cutting quality of the film material 600 .

[0090] Example 7:

[0091] As an optimization of Example 6, Figure 5-Figure 7 As shown, a support plate 240 is fixedly installed on the side of the pad 233 away from the film delivery assembly 220.

[0092] It should be noted that after the film material 600 detaches from the pad 233, it falls on the support plate 240. The support plate 240 provides support for the film material 600. When the cutter 232 cuts the film material 600 to form a film material unit 601, the support plate 240 can provide support for the film material unit 601 to prevent the film material unit 601 from falling.

[0093] Example 8:

[0094] As an optimization of Example 7, Figure 1 and Figure 2As shown, the film-stretching assembly includes a first film-stretching unit 250, a second film-stretching unit 260, a third film-stretching unit 270, and a fourth film-stretching unit 280 connected to the frame 210. The transmission direction of the film material 600 is perpendicular to the transmission direction of the supporting mechanism 100. The first film-stretching unit 250 and the second film-stretching unit 260 are sequentially arranged along the transmission direction of the film material 600, and the third film-stretching unit 270 and the fourth film-stretching unit 280 are sequentially arranged along the transmission direction of the supporting mechanism 100.

[0095] The first film-stretching unit 250 and the second film-stretching unit 260 cooperate to transfer the film material unit 601 to directly above the supporting mechanism 100, and the first film-stretching unit 250, the second film-stretching unit 260, the third film-stretching unit 270 and the fourth film-stretching unit 280 cooperate to stretch the film material unit 601, and put the film material unit 601 on the supporting mechanism 100 to form a bottom film 710.

[0096] It should be noted that the first film-stretching unit 250, the second film-stretching unit 260, the third film-stretching unit 270 and the fourth film-stretching unit 280 are all installed on the frame 210, and the first film-stretching unit 250, the second film-stretching unit 260, the third film-stretching unit 270 and the fourth film-stretching unit 280 respectively clamp and stretch the four sides of the film material unit 601, so that the longitudinal ribs 611 and the transverse ribs 612 are both extended, ensuring that the elastic ribs 610 can be sleeved around the supporting mechanism 100, thereby fixing the bottom film 710.

[0097] Example 9:

[0098] As an optimization of Example 8, Figure 1 、 Figure 5 、 Figure 9 、 Figure 10 and Figure 11 As shown, the second film-pulling unit 260 includes a second driving guide rail 261, a second slider 262, a second slide plate 263, a second hydraulic cylinder 264 and a second clamping member 265. The second driving guide rail 261 is fixedly mounted on the frame 210. The length direction of the second driving guide rail 261 is parallel to the transmission direction of the film material 600. The second slider 262 is slidably connected to the second driving guide rail 261. There are two second driving guide rails 261 and two second sliders 262. Both ends of the second slide plate 263 are fixedly connected to the two second sliders 262 respectively. The second hydraulic cylinder 264 is fixedly mounted on the second slide plate 263. The extension direction of the second hydraulic cylinder 264 is along the vertical direction. The second clamping member 265 is fixedly connected to the extension end of the second hydraulic cylinder 264. The second hydraulic cylinder 264 and the second clamping member 265 are each provided with three groups.

[0099] The second clamping member 265 includes a fixed clamping plate 2651, a sliding clamping plate 2653 and a cylinder 2655. The fixed clamping plate 2651 is fixedly connected to the telescopic end of the second hydraulic cylinder 264 through a connecting block. The sliding clamping plate 2653 slides with the second guide rod 2652 of the fixed clamping plate 2651 through the second through hole 2654. The cylinder 2655 is fixedly installed on the fixed clamping plate 2651, and the sliding clamping plate 2653 is fixedly connected to the telescopic end of the cylinder 2655.

[0100] It should be noted that the cylinder 2655 controls the sliding clamping plate 2653 to move toward the fixed clamping plate 2651. The sliding clamping plate 2653 and the fixed clamping plate 2651 cooperate to clamp the edge of the film material 600. The clamping position can also be set on the elastic rib 610. There are two support plates 240. The distance between the side surfaces of the two support plates 240 that are away from each other is less than the width of the film material 600. The two support plates 240 and the three second clamping members 265 are staggered.

[0101] When the film material 600 just falls on the support plate 240, the second driving guide rail 261 drives the second slider 262 to drive the second slide plate 263, the second hydraulic cylinder 264 and the second clamping member 265 to move toward the pad 233. Then, the first clamping member 255 clamps the film material 600 extending out of the side of the pad 233. Then, the second film pulling unit 260 cooperates with the film feeding assembly 220 to make the film material 600 slide on the support plate 240.

[0102] Example 10:

[0103] As an optimization of Example 9, Figure 1 、 Figure 5 and Figure 9 As shown, the first film pulling unit 250 includes a first driving guide rail 251, a first slider 252, a first slide plate 253, a first hydraulic cylinder 254 and a first clamping member 255. The first driving guide rail 251 is fixedly installed on the frame 210. The length direction of the first driving guide rail 251 is parallel to the transmission direction of the film material 600. The first slider 252 is slidingly connected to the first driving guide rail 251. There are two first driving guide rails 251 and two first sliders 252. The two ends of the first slide plate 253 are respectively fixedly connected to the two first slides 252. The first hydraulic cylinder 254 is fixedly installed on the first slide plate 253. The telescopic direction of the first hydraulic cylinder 254 is along the vertical direction. The first clamping member 255 is fixedly connected to the telescopic end of the first hydraulic cylinder 254. There are three groups of the first hydraulic cylinder 254 and the first clamping member 255.

[0104] It should be noted that the two support plates 240 and the three first clamping members 255 are staggered, and the structure and principle of the first clamping member 255 are exactly the same as those of the second clamping member 265, which will not be repeated here.

[0105] When the cutter 232 cuts the film material 600 and cuts out the film material unit 601, the second film-drawing unit 260 first pulls the film material unit 601 to move a distance away from the backing plate 233 until the side of the film material unit 601 away from the second film-drawing unit 260 is completely separated from the backing plate 233. Then, the first driving guide rail 251 drives the first slider 252 to drive the first slide plate 253, the first hydraulic cylinder 254 and the first clamping member 255 to move toward the backing plate 233. Then, The first hydraulic cylinder 254 extends, driving the first clamping member 255 to move upward, and then the first driving guide rail 251 drives the first slider 252 to drive the first slide plate 253, the first hydraulic cylinder 254 and the first clamping member 255 to move away from the pad 233. Then, the first clamping member 255 clamps the film material unit 601 close to the side of the pad 233. Then, the first film pulling unit 250 and the second film pulling unit 260 cooperate to transfer the film material unit 601 to directly above the support mechanism 100.

[0106] Example 11:

[0107] As an optimization of Example 10, Figure 1 、 Figure 5 and Figure 9 As shown, the third film pulling unit 270 includes a third driving guide rail 271, a third slider 272, a third slide plate 273, a third hydraulic cylinder 274 and a third clamping member 275. The third driving guide rail 271 is fixedly installed on the frame 210. The length direction of the third driving guide rail 271 is along the vertical direction. The third slider 272 is slidingly connected to the third driving guide rail 271. There are two third driving guide rails 271 and two third sliders 272. The two ends of the third slide plate 273 are respectively fixedly connected to the two third sliders 272. The third hydraulic cylinder 274 is fixedly installed on the third slide plate 273. The telescopic direction of the third hydraulic cylinder 274 is perpendicular to the transmission direction of the film material 600. The third clamping member 275 is fixedly connected to the telescopic end of the third hydraulic cylinder 274. There are three groups of the third hydraulic cylinder 274 and the third clamping member 275.

[0108] It should be noted that the structure and principle of the third clamping member 275 are exactly the same as those of the second clamping member 265 , and will not be described in detail here.

[0109] After the film material unit 601 is transferred to the position directly above the supporting mechanism 100 , the third hydraulic cylinder 274 pushes the third clamping member 275 to move toward the film material unit 601 , and then the third clamping member 275 clamps the edge of the film material unit 601 .

[0110] Example 12:

[0111] As an optimization of Example 11, Figure 1 、 Figure 5 and Figure 9 As shown, the fourth film pulling unit 280 includes a fourth driving guide rail 281, a fourth slider 282, a fourth slide plate 283, a fourth hydraulic cylinder 284 and a fourth clamping member 285. The fourth driving guide rail 281 is fixedly installed on the frame 210. The length direction of the fourth driving guide rail 281 is along the vertical direction. The fourth slider 282 is slidingly connected to the fourth driving guide rail 281. There are two fourth driving guide rails 281 and two fourth sliders 282. The two ends of the fourth slide plate 283 are respectively fixedly connected to the two fourth sliders 282. The fourth hydraulic cylinder 284 is fixedly installed on the fourth slide plate 283. The telescopic direction of the fourth hydraulic cylinder 284 is perpendicular to the transmission direction of the film material 600. The fourth clamping member 285 is fixedly connected to the telescopic end of the fourth hydraulic cylinder 284. There are three groups of the fourth hydraulic cylinder 284 and the fourth clamping member 285.

[0112] It should be noted that the structure and principle of the fourth clamping member 285 are exactly the same as those of the second clamping member 265 , and will not be described in detail here.

[0113] After the film material unit 601 is transferred to the top of the supporting mechanism 100, the fourth hydraulic cylinder 284 pushes the fourth clamping member 285 to move closer to the film material unit 601. Subsequently, the fourth clamping member 285 clamps the edge of the film material unit 601.

[0114] After the four sides of the film material unit 601 are clamped by the second clamping member 265, the first clamping member 255, the third clamping member 275 and the fourth clamping member 285 respectively, the second driving guide rail 261 drives the second slider 262 to drive the second slide plate 263, the second hydraulic cylinder 264 and the second clamping member 265 to move away from the center of the film material unit 601, the first driving guide rail 251 drives the first slider 252 to drive the first slide plate 253, the first hydraulic cylinder 254 and the first clamping member 255 to move away from the center of the film material unit 601, the third hydraulic cylinder 274 drives the third clamping member 275 to move away from the center of the film material unit 601, and the fourth hydraulic cylinder 284 drives the fourth clamping member 285 to move away from the center of the film material unit 601, thereby stretching the film material unit 601, and the transverse ribs 612 and the longitudinal ribs 611 are stretched accordingly;

[0115] Then, the second hydraulic cylinder 264 drives the second clamping member 265 to move downward, the first hydraulic cylinder 254 drives the first clamping member 255 to move downward, the third driving guide rail 271 drives the third slider 272 to drive the third slide plate 273, the third hydraulic cylinder 274 and the third clamping member 275 to move downward, and the fourth driving guide rail 281 drives the fourth slider 282 to drive the fourth slide plate 283, the fourth hydraulic cylinder 284 and the fourth clamping member 285 to move downward, and the second clamping member 265, the first clamping member 255, the third clamping member 275 and the fourth clamping member 285 move downward synchronously, thereby sleeved the film material unit 601 on the supporting mechanism 100 to form the bottom film 710;

[0116] Subsequently, the first clamping member 255, the second clamping member 265, the third clamping member 275 and the fourth clamping member 285 simultaneously release the bottom film 710, the elastic rib 610 contracts, and the bottom film 710 is fixed on the supporting mechanism 100. Then, the first film pulling unit 250, the second film pulling unit 260, the third film pulling unit 270 and the fourth film pulling unit 280 are reset.

[0117] Example 13:

[0118] As an optimization of Example 12, Figure 1 、 Figure 12 、 Figure 13 、 Figure 14 、 Figure 15 and Figure 16 As shown, the supporting mechanism 100 includes a tray 110, a pad 120 and a two-way airflow control component 130. The tray 110 is stacked on the pad 120, and the top edge of the pad 120 protrudes from the bottom edge of the tray 110. The two-way airflow control component 130 is fixedly installed in the pad 120. The two-way airflow control component 130 is provided with a first air pipe 131 and a second air pipe 132 facing all sides. The pipe mouth of the first air pipe 131 is located in the tray 110, and the pipe mouth of the second air pipe 132 is located in the pad 120.

[0119] It should be noted that the pallet 110 and the tray 120 are both made of wooden boards, the length of the pallet 110 is smaller than the length of the tray 120, the width of the pallet 110 is smaller than the width of the tray 120, and all surfaces of the pallet 110 and the tray 120 have multiple openings;

[0120] When the bottom film covering mechanism 200 begins to cover the bottom film 710, the bidirectional flow control component controls the first air pipe 131 to blow air and the second air pipe 132 to absorb air. After the bottom film 710 is covered on the supporting mechanism 100, the bottom film 710 covers the top surface of the tray 110, the sides of the tray 110, and the area around the upper portion of the pad 120. The elastic rib 610 is located below the top surface of the pad 120. The nozzle of the first air pipe 131 faces the bottom film 710 between the top and bottom surfaces of the tray 110, and the nozzle of the second air pipe 132 faces the bottom film 710 between the top and bottom surfaces of the pad 120. Under the combined action of the suction of the second air pipe 132 and the elastic rib 610, the bottom film 710 is stably covered on the supporting mechanism 100.

[0121] The top film 720 is also an elastic film. After the top film 720 is put on, the top film 720 itself is in a state of being stretched outward, and the bottom edge of the top film 720 is located between the top surface of the tray 110 and the bottom surface of the tray 110, and squeezes the bottom film 710 located between the top surface of the tray 110 and the bottom surface of the tray 110, and the bottom film 710 between the top surface of the tray 110 and the bottom surface of the tray 110 is concave inward. At this time, the two-way airflow control component 130 controls the first air pipe 131 to inhale and the second air pipe 132 to blow, and the bottom film 710 between the top surface of the tray 110 and the bottom surface of the tray 110 is further concave inward and fits with the four sides of the tray 110, so that the bottom film 710 between the top surface of the pad 120 and the bottom surface of the pad 120 tends to be pulled upward. The bottom film 710 between the top surface of the pad 120 and the bottom surface of the pad 120 is stretched under the action of the airflow blown by the second air pipe 132, and the elastic rib 610 is also stretched accordingly, so that the bottom film 710 between the top surface of the pad 120 and the bottom surface of the pad 120 is separated from the pad 120. Under the combined action of the elastic restoring force of the bottom film 710, the air suction of the first air pipe 131 and the air blowing of the second air pipe 132, the bottom film 710 between the top surface of the pad 120 and the bottom surface of the pad 120 is turned up to between the top surface of the tray 110 and the bottom surface of the tray 110, and reversely covers the bottom edge of the top film 720. The elastic rib 610 is sleeved on the bottom edge of the top film 720, thereby improving the connection strength between the top film 720 and the bottom film 710 and improving the stability of the film sleeve 700.

[0122] In addition, the bottom film 710 is completely separated from the dolly 120. When the stack 500 is transferred by a forklift, only the pallet 110 is transferred along with the stack 500. The dolly 120 and the two-way airflow control assembly 130 can be recycled, which helps reduce costs.

[0123] In this embodiment, all surfaces of the tray 110 and the pad 120 are rectangular, and the four corners of the top of the pad 120 are fixedly connected with L-shaped limit blocks 121. The four limit blocks 121 cooperate to limit the tray 110 to prevent the tray 110 from moving horizontally on the pad 120, thereby ensuring the accuracy of the position of the tray 110 stacked on the pad 120 and ensuring the accuracy of the bottom film 710.

[0124] Example 14:

[0125] As an optimization of Example 13, Figure 12 and Figure 17 As shown, the two-way airflow control component 130 includes a first fan 133, a second fan 134, a first annular pipe 135 and a second annular pipe 136. The first fan 133 and the second fan 134 are both fixedly installed in the pad 120. The air intake of the first fan 133, the air blowing port of the second fan 134 and the first air pipe 131 are all connected to the first annular pipe 135. The air blowing port of the first fan 133, the air intake of the second fan 134 and the second air pipe 132 are all connected to the second annular pipe 136.

[0126] It should be noted that, when the first fan 133 is started and the second fan 134 is turned off, the first fan 133 sucks air through the first annular pipe 135 and the first air pipe 131, and blows air through the second annular pipe 136 and the second air pipe 132; when the second fan 134 is started and the first fan 133 is turned off, the second fan 134 sucks air through the second annular pipe 136 and the second air pipe 132, and blows air through the first annular pipe 135 and the first air pipe 131; by controlling to start the first fan 133 alone or to start the second fan 134 alone, two-way control of the airflow can be achieved.

[0127] The embodiments of the invention are described above in conjunction with the accompanying drawings, but this embodiment is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this embodiment, ordinary technicians in this field can also make many forms without departing from the purpose of this embodiment and the scope of protection of the claims, all of which are protected by this embodiment.

Claims

1. Masterbatch stacking and film covering device, characterized in that: include: A supporting mechanism (100) for supporting the stack (500); A bottom film covering mechanism (200) comprises a frame (210), wherein a film feeding assembly (220), a film cutting assembly (230) and a film pulling assembly are sequentially installed on the frame (210) along the transmission direction of the film material (600), and the bottom film covering mechanism (200) is used to cover the bottom film (710) on the supporting mechanism (100), and the bottom film (710) is located between the supporting mechanism (100) and the stack (500); A top film sleeve mechanism (300) is used to sleeve a top film (720) on the stack (500), wherein the bottom end of the top film (720) overlaps and fits with the bottom film (710), and together they form a film sleeve (700) that completely wraps the stack (500); A conveying line (400) is used to convey the supporting mechanism (100), and the bottom film covering mechanism (200) and the top film covering mechanism (300) are sequentially arranged along the conveying direction of the conveying line (400); The supporting mechanism (100) comprises a tray (110), a pad (120) and a two-way airflow control assembly (130), wherein the tray (110) is stacked on the pad (120), the top edge of the pad (120) protrudes from the bottom edge of the tray (110), and the two-way airflow control assembly (130) is fixedly installed in the pad (120), and the two-way airflow control assembly (130) is provided with a first air pipe (131) and a second air pipe (132) facing in all directions, the pipe opening of the first air pipe (131) is located in the tray (110), and the pipe opening of the second air pipe (132) is located in the pad (120); A material roll holder (290) is provided outside the frame (210), and the rolled film material (600) is rotatably mounted on the material roll holder (290). The film material (600) is elastic, and a plurality of elastic ribs (610) of a square ring structure are provided inside the film material (600). The film cutting assembly (230) comprises a telescopic driving member (231) fixedly mounted on the frame (210), a cutter (232) drivingly connected to the telescopic driving member (231), and a backing plate (233) fixedly connected to the frame (210), wherein the backing plate (233) is provided with a cutting groove (2331) that cooperates with the cutter (232); The film-pulling assembly comprises a first film-pulling unit (250), a second film-pulling unit (260), a third film-pulling unit (270) and a fourth film-pulling unit (280) connected to the frame (210); the transmission direction of the film material (600) is perpendicular to the transmission direction of the supporting mechanism (100); the first film-pulling unit (250) and the second film-pulling unit (260) are sequentially arranged along the transmission direction of the film material (600); and the third film-pulling unit (270) and the fourth film-pulling unit (280) are sequentially arranged along the transmission direction of the supporting mechanism (100); The first film-stretching unit (250) and the second film-stretching unit (260) cooperate to transfer the film material unit (601) to the top of the supporting mechanism (100); the first film-stretching unit (250), the second film-stretching unit (260), the third film-stretching unit (270) and the fourth film-stretching unit (280) cooperate to stretch the film material unit (601), and the film material unit (601) is placed on the supporting mechanism (100) to form the bottom film (710).

2. The masterbatch stacking and film covering device according to claim 1, characterized in that: The film delivery assembly (220) comprises a rotating driving member (221) fixedly mounted on the frame (210), and an active roller (222) and a driven roller (223) rotatably mounted on the frame (210), wherein the output end of the rotating driving member (221) is drivingly connected to the active roller (222).

3. The masterbatch stacking and film covering device according to claim 2, characterized in that: The elastic ribs (610) include two longitudinal ribs (611) parallel to the length direction of the active roller (222), and both the active roller (222) and the driven roller (223) are provided with strip grooves (224) that cooperate with the longitudinal ribs (611).

4. The masterbatch stacking and film covering device according to claim 3, characterized in that: The elastic ribs (610) further include two transverse ribs (612) perpendicular to the length direction of the active roller (222), and both the active roller (222) and the driven roller (223) are provided with an annular groove (225) that cooperates with the transverse ribs (612).

5. The masterbatch stacking and film covering device according to claim 1, characterized in that: A support plate (240) is fixedly mounted on the side of the pad (233) away from the film delivery assembly (220).

6. The masterbatch stacking and film covering device according to claim 1, characterized in that: The bidirectional airflow control assembly (130) comprises a first fan (133), a second fan (134), a first annular pipe (135) and a second annular pipe (136); the first fan (133) and the second fan (134) are both fixedly mounted in the pad (120); the air intake of the first fan (133), the air outlet of the second fan (134) and the first air pipe (131) are all in communication with the first annular pipe (135); the air outlet of the first fan (133), the air intake of the second fan (134) and the second air pipe (132) are all in communication with the second annular pipe (136).

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