Lining forming method and lining forming device

Abstract

The invention relates to the field of packaging forming, in particular to a lining forming method and a lining forming device. The forming method comprises the steps that the containing bottom plate is arranged on the bearing end, so that the wing panel is suspended; constructing a first forming element, a second forming element and a first reference surface forming an included angle with the bearing end; the first forming element can move towards the first datum plane to a first forming position and press a part of the suspended wing panel to the first datum plane in the path, so that the wing panel is provided with a wall root folding line formed at the bearing end and the adjacent edge of the first datum plane; meanwhile, the other part of the wing panel is supported by the second forming element at the first folding station, so that the wing panel is provided with a wall top folding line formed at the tail end edge of the first forming element in the first forming position; and the wing panel is folded along the wall root folding line and the wall top folding line which are arranged in parallel to manufacture the retaining wall.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of packaging forming, in particular to a method and device for forming an inner liner. BACKGROUND

[0002] In the field of packaging technology, inner liners are often used to separate and protect products and their accessories.

[0003] Such inner liners are usually folded from a paper blank into a three-dimensional structure, which, after being placed in a packaging box, can divide the internal space into multiple independent compartments. For more valuable electronic devices, the inner liner can also be folded to form a double-layer or multi-layer structure of the retaining wall, which not only achieves the positioning of the device, but also buffers the collision between the device and the packaging box through the deformation of the retaining wall.

[0004] However, the existing inner liner forming operation has the following problems: Currently, inner liners are mostly manufactured by pre-forming or manual folding, which has the problems of low forming efficiency, poor structural consistency, and unstable buffering performance. Although some automated equipment can fold a flat blank into a three-dimensional inner liner, when dealing with a complex retaining wall structure with multiple folding lines, multiple folding elements with different directions of action need to be constructed.

[0005] If these folding elements are placed in the same station, the folding mechanism will be complex, and there will be mutual interference between multiple action elements.

[0006] If the folding elements are dispersed to different stations, the retaining wall structure will be gradually formed between different stations, and the blank will need to be positioned before each folding action in each station, which may result in the original crease being damaged or additional creases appearing.

[0007] No matter which form, it brings difficulties to the forming of the retaining wall structure and the manufacture of related equipment. SUMMARY

[0008] The purpose of the present application is to provide a method and device for forming an inner liner to solve the problem of complex inner liner forming in the prior art.

[0009] The technical solution of the present application is: a method for forming an inner liner, the inner liner is formed by folding a blank along a folding line, the blank has an upper part, the upper part at least includes a receiving bottom plate and a wing extending outside the folding line, at least two adjacent edges of the receiving bottom plate are made into a retaining wall by the wing; The forming method comprises: placing the receiving bottom plate on the carrying end so that the wing is suspended; constructing a first forming element and a second forming element, and a first reference surface at an angle with the carrying end; The first forming element is capable of moving to a first forming position towards a first reference surface and pressing a part of the overhanging flap to the first reference surface in the path, so that the flap has a heel fold line formed at the adjacent edge of the carrying end and the first reference surface; Meanwhile, another part of the flap is supported by the second forming element in the first folding station, so that the flap has a head fold line formed at the end edge of the first forming element in the first forming position; The flap is folded along the parallel heel fold line and head fold line to manufacture a retaining wall.

[0010] Preferably, the head fold line comprises a first head fold line close to the heel fold line and a second head fold line parallel to the first head fold line, and the second head fold line is formed by the following steps: The second forming element is driven to act in the second folding station, so that the flap is in contact with the first forming element kept in the first forming position, and the end of the first forming element away from the first reference surface is configured as a second reference surface, and the second head fold line is formed at the adjacent edge of the end of the first forming element and the second reference surface.

[0011] Preferably, the head fold line comprises a first head fold line close to the heel fold line and a second head fold line parallel to the first head fold line; A boundary surface perpendicular to the first reference surface and coinciding with the end of the first forming element is configured, and the second forming element in the first folding station is arranged through the boundary surface; The first head fold line and the second head fold line are formed synchronously when the first forming element enters the first forming position.

[0012] Preferably, a forming strip is arranged on the first reference surface matched with the first forming element, and the forming strip has a forming surface parallel to the end of the first forming element entering the first forming position; The part of the blank between the first head fold line and the second head fold line is stopped by the forming surface in the folding process.

[0013] Preferably, a transfer mechanism is configured for the transfer of the inner liner; The first forming element is connected to the transfer mechanism, and a negative pressure hole is configured on the first forming element, and the negative pressure hole is connected to a negative pressure device through the transfer mechanism for the connection of the inner liner; During the transfer of the transfer mechanism, a channel is formed for the blank to be placed in the carrying end in the vertical direction.

[0014] The inner liner forming device comprises a base, a forming jig, a first forming element and a second forming element; The bearing end and the first reference surface are respectively configured as a top surface and at least a part of a side wall of a forming jig; The first forming element is capable of being suspended above the forming jig by a transfer mechanism. The first forming element and the second forming element have fan-shaped active surfaces during the folding action, and the openings of the two fan-shaped active surfaces respectively correspond to downward and upward.

[0015] Preferably, a pressing element is provided, the pressing element is connected to the transfer mechanism, and the first forming element is arranged around the pressing element. The pressing element has a pressing surface parallel to the bearing end, and the side wall of the pressing element flush with the forming jig is configured as a third reference surface, and part of the second forming element is capable of driving the flaps to be attached to the third reference surface.

[0016] Preferably, two sets of positioning mechanisms are provided on the base, any set of the positioning mechanisms includes a positioning execution member and a positioning reference member arranged in cooperation, and the two sets of positioning execution members are capable of respectively moving towards the positioning reference members arranged on the opposite side along a first direction and a second direction perpendicular to the first direction.

[0017] Preferably, a receiving groove is provided on the base, the forming jig is arranged in the middle of the receiving groove by a lifting module, and a cavity is formed on the circumferential side of the forming jig, and the second forming element is arranged in the cavity around the forming jig.

[0018] Preferably, the blank includes a lower part connected to an upper part by a flap, and the positioning mechanism arranged in the first direction corresponds to the lower part. The base is provided with an auxiliary positioning member corresponding to the width direction of the upper part, and the second forming element in the first folding station has an inclined wall surface, and the wall surface and the auxiliary positioning member arranged on the opposite side form a cross section with an upward opening.

[0019] Compared with the prior art, the advantages of the present application are: (1) The first forming element performs the folding function of pushing the flaps to form the wall root folding line, and after reaching the first forming position, the back surface away from the first reference surface is immediately configured as a "second reference surface". Subsequently, the active second forming element can directly perform secondary pressing and folding with the second reference surface as the target without additional fixed reference module. This design makes one active execution element (the first forming element) transform into a precise folding reference of another active execution element (the second forming element) after completing its own steps. Thus, a set of independent fixed reference module is saved, and the overall mechanical structure is simplified.

[0020] (2) The combination design of the transfer mechanism and the first forming element enables the formed inner liner to be directly adsorbed and transferred, which simplifies the process connection, leaves out the vertical space for the feeding of the next blank, optimizes the feeding path, and greatly improves the production efficiency.

[0021] (3) The combination of the multiple positioning mechanisms and the auxiliary positioning member and the guide design of the inclined wall surface of the second forming element ensure that the blank can be accurately positioned to the preset position before being folded, which avoids the folding defects or production interruption caused by the bending of the flexible blank at one end. BRIEF DESCRIPTION OF DRAWINGS

[0022] The application will be further described below in combination with the drawings and examples: Figure 1 The forming method flow chart of the application for forming the flat blank into the inner liner with the retaining wall; Figure 2 The blank structure diagram of the application, on which the distribution of the folding lines to be generated in the forming process is marked; Figure 3 The structure of the inner liner after being formed according to the application; Figure 4 The A view of Figure 3 ; Figure 5 The action steps of each element of the forming device according to the application and the schematic diagram of the change of the blank shape at the same time; Figure 6 The structure diagram of the forming jig according to the application; Figure 7 The structure diagram of part of the first forming element according to the application; Figure 8 The structure diagram of the forming device from the first perspective according to the application; Figure 9 The structure diagram of the forming device from the second perspective according to the application; Figure 10 The cooperation relationship diagram of the pressing plate and the forming jig according to the application; Figure 11 The structure diagram of the base according to the application; Wherein: 100a, inner liner, 100b, blank, P1, upper part, P11, accommodating bottom plate, P12, wing, P13, retaining wall, P2, lower part, L1, wall root folding line, L2, wall top folding line, L21, first wall top folding line, L22, second wall top folding line, 2, base, 21, accommodating groove, 3, forming jig, 31, bearing end, 32, first reference surface, 33, forming strip, 331, forming surface, 34, lifting module, 4, first forming element, 4a, first forming position, 41, second reference surface, 42, negative pressure hole, 5, second forming element, 5a, first folding station, 5b, second folding station, 6, transfer mechanism, 7, pressing element, 71, pressing surface, 72, third reference surface, 8, positioning mechanism, 81, positioning actuator, 82, positioning reference, 9, auxiliary positioning element. DETAILED DESCRIPTION

[0023] In the description of the present application, it needs to be understood that the terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0024] In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features referred to. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise stated, the meaning of "a plurality of" is two or more, unless otherwise explicitly limited.

[0025] In the present application, unless otherwise explicitly specified and limited, "on" or "under" of the first feature to the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, "on", "above" and "above" of the first feature to the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. "Below", "below" and "below" of the first feature to the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0026] The content of the present application will be further described in detail below in conjunction with specific embodiments: For the convenience of understanding, the inner liner 100a described in the embodiments of the present application is part of a mobile phone box packaging structure, which is used to form a cavity in the mobile phone box for accommodating mobile phones, power lines, charging lines and other components. However, it should be noted that the present application is not limited to mobile phone box packaging, but to all products having the same or similar functions and structures.

[0027] Please refer to Figure 2 - Figure 4 The inner liner 100a is a three-dimensional structure formed by folding each part of a flat blank 100b along a "folding line". The blank 100b includes an upper part P1 and a lower part P2, which are used to form the upper structure and the lower structure of the inner liner 100a, respectively. The upper part P1 includes at least a receiving base plate P11, the boundary of the receiving base plate P11 will be the folding line of the subsequent folding action, and the receiving base plate P11 has four flaps P12 extending outwardly along the folding line. The lower part P2 is connected to the upper part P1 through one of the flaps P12, and the four flaps P12 are folded along the folding line towards the same surface of the receiving base plate P11, thereby covering the lower part P2 to form a three-dimensional lower structure.

[0028] At least one of the mobile phone, power line, charging line and other components is placed on the upper structure formed by the receiving base plate P11 and the retaining wall P13.

[0029] The retaining wall P13 is a hollow three-dimensional structure formed by folding the flaps P12 multiple times. The hollow structure of the retaining wall P13 can limit the content of the upper structure in the horizontal XY direction and serve as a buffer when the content collides with the packaging box. To achieve the above effect, the retaining wall P13 is manufactured as at least two, and the at least two retaining walls P13 are arranged in the vertical direction.

[0030] The present application discloses a method for manufacturing the inner liner 100a including the retaining wall P13 from a flat blank 100b, and a forming device for manufacturing the inner liner 100a using the method.

[0031] In combination with Figure 1 and Figure 5 It is shown that the retaining wall P13 is manufactured by the following method: Referring to Figure 5 Steps S1-S2 in the figure, the upper part P1 of the blank 100b is placed on the fixedly arranged bearing end 31, the size of the bearing end 31 corresponds to the receiving base plate P11, and the bearing end 31 has a height higher than the surrounding adjacent objects, so that the flaps P12 extending outwardly on the receiving base plate P11 are suspended.

[0032] In combination with Figure 5In step S3-S4, the first forming element 4 and the first reference surface 32 which is at an angle with the bearing end 31 are constructed. The first forming element 4 is movably arranged and can move towards the first reference surface 32 to a first forming position 4a, and can abut against the overhanging flap P12 on the moving path and push the flap P12 towards the first reference surface 32 until the part of the flap P12 close to the accommodating bottom plate P11 is pressed onto the first reference surface 32. Since the first reference surface 32 is at an angle with the bearing end 31, a folding line will be formed on the adjacent edge of the bearing end 31 or the first reference surface 32 during the movement of the flap P12 towards the first reference surface 32. The folding line is constructed as a wall root folding line L1 for forming the retaining wall P13.

[0033] Meanwhile, in combination with Figure 5 In step S4-S5, the second forming element 5 is constructed, which has a first folding station 5a in normal state. The part of the flap P12 away from the accommodating bottom plate P11 will be supported by the second forming element 5 in the first folding station 5a, and the support of the flap P12 away from the accommodating bottom plate P11 during the folding of the flap P12 will make the flap P12 form a wall top folding line L2 corresponding to the end edge of the first forming element 4 in the first forming position 4a.

[0034] The flap P12 folded along the wall bottom folding line and the wall top folding line L2 parallel thereto will form the retaining wall P13.

[0035] Specifically, in the preferred embodiment of the present application, the retaining wall P13 is formed by three folds of the flap P12. That is, the wall top folding line L2 is constructed as two lines, including a first wall top folding line L21 close to the wall root folding line L1 and a second wall top folding line L22 parallel to the first wall top folding line L21.

[0036] In one embodiment, the second wall top folding line L22 is formed by the following steps: A boundary surface is constructed which is perpendicular to the first reference surface 32 and coincides with the end plane of the first forming element 4, and the height of the second forming element 5 is adjusted so that the second forming element 5 in the first folding station 5a can penetrate the boundary surface. During the movement of the first forming element 4 into the first forming position 4a, the first wall top folding line L21 is formed on the edge corresponding to the end of the first forming element 4 close to the first reference surface 32; and when the first forming element 4 enters the first forming position 4a, the second wall top folding line L22 is formed on the other edge corresponding to the edge in the thickness direction of the first forming element 4.

[0037] In another preferred embodiment of the present application, the second wall top folding line L22 is formed by the following steps: The second forming element 5 is movably arranged and can be moved to the second folding station 5b. The second forming element 5 is driven to move to the second folding station 5b so that the flap P12 is attached to the first forming element 4 held in the first forming position 4a. At this time, the end of the first forming element 4 away from the first reference surface 32 is configured as a second reference surface 41, and a second wall top folding line L22 is formed on the adjacent edge of the end of the first forming element 4 and the second reference surface 41.

[0038] In an embodiment of the present application, the first forming element 4 is connected to the transfer mechanism 6, and the transfer mechanism 6 is configured to include a suction module, a linear module, and a lifting mechanism. Figure 5 In step S5 and Figure 6 As shown in FIG. 4, a protrusion is integrally formed at the bottom end of the first reference surface 32 matched with the first forming element 4, and a forming strip 33 is arranged on the protrusion. When the first forming element 4 enters the first forming position 4a, the upper surface of the forming strip 33 is parallel to the end of the first forming element 4 and is configured as a forming surface 331. During the forming of the first wall top folding line L21 and the second wall top folding line L22 on the blank 100b, the part of the blank 100b between the first wall top folding line L21 and the second wall top folding line L22 can abut against the forming surface 331 and be stopped by the forming surface 331, thereby reducing the bending radius of the blank 100b during folding, so that the first wall top folding line L21 and the second wall top folding line L22 are more clear.

[0039] In an embodiment of the present application, a transfer mechanism 6 including a suction module, a linear module, and a lifting mechanism is configured for the transfer of the inner liner 100a, so that the inner liner 100a can enter other processing procedures or be assembled into a packaging box. In this embodiment, the first forming element 4 is connected to the transfer mechanism 6, and the transfer mechanism 6 is configured to include a suction module, a linear module, and a lifting mechanism. Figure 7 As shown in FIG. 4, the suction module includes a negative pressure hole 42 opened on the second reference surface 41, and the negative pressure hole 42 is connected to a negative pressure device through the transfer mechanism 6 to generate a negative pressure capable of adsorbing the inner liner 100a. After the blank 100b is formed, the first forming element 4 is connected to the inner liner 100a through the negative pressure and transfers the inner liner 100a to other stations with the transfer mechanism 6. In this way, the first forming element 4 can be moved away from above the carrying end 31 during the transfer of the transfer mechanism 6, so that a passage is formed above the carrying end 31 for the next blank 100b to be placed in the vertical direction, thereby simplifying the feeding path.

[0040] Figure 8 and Figure 9 The inner liner 100a forming device disclosed in the present application is shown.

[0041] The inner liner 100a forming device includes a base 2, a forming jig 3, a first forming element 4, and a second forming element 5.

[0042] Figure 6 , Figure 7 , Figure 10 andFigure 11 Parts and mechanisms of the forming device are shown respectively.

[0043] The forming jig 3 is generally configured as a cuboid structure, and the bearing end 31 and the first reference surface 32 are respectively configured as the top surface and the side wall of the forming jig 3.

[0044] The first forming element 4 can be suspended above the forming jig 3 by the transfer mechanism 6 and can be lifted or horizontally moved under the driving of the transfer mechanism 6. Both the first forming element 4 and the second forming element 5 are configured as a plate structure and are respectively connected with a driver, which is a finger cylinder in this embodiment. There are two first forming elements 4 and four second forming elements 5. The two first forming elements 4 have different sizes but generally play the same role, and the four second forming elements 5 are the same. Figure 5 As can be seen from steps S3-S5, the driver can drive the first forming element 4 and the second forming element 5 to swing around two different horizontal axes, thereby forming a fan-shaped moving surface. The fan-shaped moving surface of the first forming element 4 opens downward, and the fan-shaped moving surface of the second forming element 5 opens upward.

[0045] When the first forming element 4 and the second forming element 5 perform the folding action on the blank 100b, the blank 100b needs to be fixed to avoid displacement of the blank 100b during the folding process. In combination with Figure 10 As shown, the present application is provided with a pressing element 7 connected to the transfer mechanism 6 and located between a pair of first forming elements 4. The pressing element 7 is configured as a plate structure and has a pressing surface 71 parallel to the bearing end 31, so that it can tightly press the blank 100b on the bearing end 31 with the action of the transfer mechanism 6. In the preferred embodiment of the present application, the pressing element 7 has the same outer contour line as the bearing end 31 at least on the end surface corresponding to a pair of first forming elements 4 and second forming elements 5, so as to avoid interference of the pressing element 7 with the movement of the first forming element 4 and the second forming element 5.

[0046] In addition, the side wall of the pressing element 7 flush with the forming jig 3 is configured as a third reference surface 72. The second forming element 5 not corresponding to the two first forming elements 4 can move towards the third reference surface 72 and push the suspended flap P12 to the third reference surface 72 in this path, so as to fold the flap P12 without forming a retaining wall P13 structure.

[0047] In combination with Figure 8 and Figure 9The positioning of the blank 100b before folding is achieved by positioning mechanisms 8 arranged in two groups on the base 2, the two groups of positioning mechanisms 8 being arranged along the length direction and the width direction of the blank 100b respectively, and any one group of positioning mechanisms 8 comprising a positioning actuator 81 and a positioning reference 82. In the embodiment, the positioning actuator 81 and the positioning reference 82 are both formed by bending a metal sheet, and the positioning reference 82 is fixed to the base 2. The positioning actuator 81 is connected to a positioning driver, and can move towards the corresponding positioning reference 82 under the driving of the positioning driver. A pair of positioning actuators 81 abut the length direction and the width direction of the blank 100b respectively, so that the two ends of the blank 100b along the length direction and the width direction are clamped by the corresponding positioning actuators 81 and positioning references 82, thereby ensuring that the accommodating bottom plate P11 enters the preset relative position with the bearing end 31.

[0048] To avoid the first forming element 4 and the second forming element 5, the positioning mechanism 8 for positioning the blank 100b in the width direction is arranged corresponding to the lower part P2 of the blank 100b. When the lower part P2 has a long stroke in the width direction during positioning, the movement of the lower part P2 cannot be rigidly transmitted to the upper part P1 due to the flexibility of the blank 100b, and the blank 100b may be bent at the connection between the upper part P1 and the lower part P2, so that the lower part P2 cannot effectively drive the upper part P1 to enter the preset folding position.

[0049] Therefore, in the preferred embodiment of the present application, the second forming element 5 in the first folding station 5a is arranged along the inclined direction close to the wall surface of the second reference surface 41 or the third reference surface 72, and an auxiliary positioning member 9 is installed on the base 2 corresponding to the width direction of the upper part P1. And as shown in Figure 11 The accommodating groove 21 is formed on the base 2, the forming jig 3 is placed in the middle of the accommodating groove 21 by the vertically connected lifting module 34 at the bottom, and can be lifted under the driving of the lifting module 34. At this time, the side of the forming jig 3 will form a cavity, a plurality of second forming elements 5 are arranged in the cavity, and the driver driving the plurality of second forming elements 5 is arranged below the base 2.

[0050] One second forming element 5 and one auxiliary positioning member 9 located on both sides of the width direction of the upper part P1 of the blank 100b form an upwardly open area along the vertical plane parallel to the width direction of the blank 100b. And by controlling the lifting module 34, the bearing end 31 of the forming jig 3 is located at the lower part P2 of the area.

[0051] When the blank 100b is placed into the forming jig 3 along the vertical direction, the upper portion P1 of the blank 100b on one side along the width direction will abut against the second forming element 5 and slide along the inclined wall surface of the second forming element 5 under the action of gravity, so that the other side along the width direction of the upper portion P1 moves towards the auxiliary positioning member 9 until abutting against it. At this time, the upper portion P1 will be basically in the correct preset position relative to the bearing end 31, thereby reducing the movement stroke required for the upper portion P1 in the positioning process of the lower portion P2.

[0052] In the preferred embodiment of the present application, the auxiliary positioning members 9 are arranged on both sides of the upper portion P1 of the blank 100b along the width direction, and the top ends of the auxiliary positioning members 9 are bent so that the top ends of the pair of auxiliary positioning members 9 form an upward opening. In actual application scenarios, because the sizes of the flaps P12 on both sides of the upper portion P1 of the blank 100b are different, one of the auxiliary positioning members 9 is closer to the forming jig 3 than the other auxiliary positioning member 9, resulting in that the auxiliary positioning member 9 is located on the running track of the adjacent second forming element 5. Therefore, an avoiding groove is formed on the second forming element 5 to prevent interference with the auxiliary positioning member 9.

[0053] Reference Figure 5 In steps S1-S5, the present application has the following steps when working; Step one, the feeding mechanism takes out the flat blank 100b from the hopper and places the upper portion P1 into the forming jig 3. In the preferred embodiment of the present application, step one can include the following operations: The forming jig 3 is lowered by the lifting module 34 to lower the height, the feeding mechanism takes out the flat blank 100b from the hopper and places the upper portion P1 into the forming jig 3, and at the same time, the lower portion P2 of the blank 100b is placed between the positioning mechanisms 8. In this process, the upper portion P1 of the blank 100b slides along one side along the width direction of the second forming element 5 until the other side abuts against the auxiliary positioning member 9, and the preliminary positioning is realized by gravity. Then the forming jig 3 is raised to reset. It should be noted that these actions are not necessary as the preferred embodiment.

[0054] Step two, the two groups of positioning mechanisms 8 act to position the blank 100b along the width direction and the length direction, so that the upper portion P1 to be folded of the blank 100b and the forming jig 3 enter the correct relative position.

[0055] Step three, the transfer mechanism 6 drives the pressing mechanism and the first forming element 4 to descend, so that the pressing mechanism tightly presses the accommodating bottom plate P11 on the blank 100b against the bearing end 31.

[0056] Step four, the first forming element 4 acts to fold the two flaps P12 of the blank 100b towards the first reference surface 32 of the forming jig 3 and into the first forming position 4a, in the process, a first wall root fold line L1 is formed at the root of the flaps P12, and when the flaps P12 come into contact with the forming surface 331 on the forming bar 33 and the second forming element 5 in the first folding station 5a, a first wall top fold line L21 and a second wall top fold line L22 are formed in turn.

[0057] Step five, the four second forming elements 5 act to the second folding station 5b to adhere the two flaps P12 forming the wall root fold line L1 to the second reference surface 41 on the back of the first forming element 4, thereby manufacturing the structure of the retaining wall P13. At the same time, the other two flaps P12 are adhered to the third reference surface 72 on the side of the pressing mechanism, and the folding of the flaps P12 is completed.

[0058] The above embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application. For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or basic characteristics of the present application, therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application.

Claims

1. A method for forming an inner liner, wherein the inner liner (100a) is formed by folding a blank (100b) along a fold line, the blank (100b) having an upper part (P1), the upper part (P1) including at least a receiving bottom plate (P11) and a wing (P12) extending outside the fold line, wherein at least two adjacent sides of the receiving bottom plate (P11) are provided with retaining walls (P13) by means of the wing (P12). Its features are, The molding method includes: The receiving base plate (P11) is placed on the bearing end (31), so that the winglet (P12) is suspended in the air; Construct a first molding element (4) and a second molding element (5), and a first reference surface (32) that forms an angle with the bearing end (31); The first molding element (4) can move toward the first reference surface (32) to the first molding position (4a) and press a portion of the suspended wing (P12) onto the first reference surface (32) in the path, so that the wing (P12) has a wall root fold line (L1) formed on the adjacent edge of the bearing end (31) and the first reference surface (32). Meanwhile, another part of the wing (P12) is supported by the second forming element (5) at the first folding position (5a), so that the wing (P12) has a wall top fold line (L2) formed on the end edge of the first forming element (4) in the first forming position (4a). The retaining wall (P13) is created by folding the wing (P12) along the parallel wall base fold line (L1) and wall top fold line (L2).

2. The lining molding method according to claim 1, characterized in that, The wall top fold line (L2) includes a first wall top fold line (21) near the wall base fold line (L1) and a second wall top fold line (22) parallel to the first wall top fold line (21). The second wall top fold line (22) is formed by the following steps: Drive the second forming element (5) to the second folding station (5b) so that the wing (P12) fits against the first forming element (4) which is held in the first forming position (4a). At this time, the end of the first forming element (4) away from the first reference surface (32) is constructed as the second reference surface (41), and the second wall top fold line (22) is formed on the adjacent edge of the end of the first forming element (4) and the second reference surface (41).

3. The lining molding method according to claim 1, characterized in that, The wall top fold line (L2) includes a first wall top fold line (21) close to the wall root fold line (L1) and a second wall top fold line (22) parallel to the first wall top fold line (21). Construct an interface that is perpendicular to the first reference plane (32) and coincides with the end of the first molding element (4), and set the second molding element (5) in the first folding station (5a) through the interface; When the first molding element (4) enters the first molding position (4a), the first wall top fold line (21) and the second wall top fold line (22) are formed simultaneously.

4. The liner forming method according to claim 2 or 3, characterized in that, A forming strip (33) is provided on a first reference surface (32) that mates with the first forming element (4), the forming strip (33) having a forming surface (331) parallel to the end of the first forming element (4) entering the first forming position (4a). The portion of the blank (100b) between the first top fold line (21) and the second top fold line (22) is stopped by the forming surface (331) during the folding process.

5. The liner forming method according to claim 4, characterized in that, A transfer mechanism (6) is configured for the transfer of the liner (100a); The first molding element (4) is connected to the transfer mechanism (6), and a negative pressure hole (42) is constructed on the first molding element (4). The negative pressure hole (42) is connected to the negative pressure device through the transfer mechanism (6) for connecting the liner (100a). During the transfer process of the transfer mechanism (6), a channel is formed for the blank (100b) to be placed vertically into the bearing end (31).

6. A liner forming apparatus, employing the liner forming method as described in claim 5, characterized in that, Includes a base (2), a molding fixture (3), a first molding element (4), and a second molding element (5); The bearing end (31) and the first reference surface (32) are respectively constructed as the top surface and at least a portion of the sidewall of the forming fixture (3); The first molding element (4) can be suspended above the molding fixture (3) by the transfer mechanism (6); The first forming element (4) and the second forming element (5) have fan-shaped movable surfaces during the folding action, and the openings of the two fan-shaped movable surfaces face downward and upward respectively.

7. The lining forming apparatus according to claim 6, characterized in that, A pressing element (7) is provided, which is connected to the transfer mechanism (6), and the first forming element (4) is arranged around the pressing element (7); The pressing element (7) has a pressing surface (71) that is parallel to the bearing end (31). The sidewall of the pressing element (7) that is flush with the forming fixture (3) is constructed as a third reference surface (72). Part of the second forming element (5) can drive the winglet (P12) to adhere to the third reference surface (72).

8. The liner forming apparatus according to claim 6, characterized in that, The base (2) is provided with two sets of positioning mechanisms (8). Each set of positioning mechanisms (8) includes a positioning actuator (81) and a positioning reference (82) that are configured to cooperate. The two sets of positioning actuators (81) can move towards the positioning reference (82) on the opposite side along the first direction and the second direction perpendicular to the first direction, respectively.

9. The lining forming apparatus according to claim 8, characterized in that, The base (2) has a receiving groove (21), the molding fixture (3) is set in the middle of the receiving groove (21) by the lifting module (34), and forms a cavity on the periphery of the molding fixture (3), and the second molding element (5) is set in the cavity around the molding fixture (3).

10. The liner forming apparatus according to claim 9, characterized in that, The blank (100b) includes a lower part (P2) connected to the upper part (P1) via a wing (P12), and a positioning mechanism (8) arranged along the first direction is provided corresponding to the lower part (P2); The base (2) is provided with an auxiliary positioning member (9) in the width direction corresponding to the upper part (P1). The second forming element (5) in the first folding station (5a) has an inclined wall surface, and the wall surface and the auxiliary positioning member (9) on the opposite side form a cross section with an upward opening.

Images