Luggage punch forming equipment

Abstract

The utility model discloses luggage punch forming equipment which comprises a conveying device, a plate forming device, a plate transferring device and a punch forming device. The multiple conveying devices are arranged side by side. The plate forming device comprises an extruder as well as a roll film unwinding assembly, a composite roller group, a first cooling assembly and a fixed-length cutting assembly which are sequentially arranged along the outlet end of the extruder; a plate sent out from an outlet of the extruder and a film material of the rolled film unwinding assembly synchronously enter the composite roller set to be compounded, and then are cooled by the first cooling assembly; one conveying device is located at the rear end of the fixed-length cutting assembly, and the plates subjected to fixed-length cutting are conveyed through the conveying devices; the plate transferring device is located above the conveying device and selectively transfers the plates located on the conveying device to other conveying devices. And the corresponding conveying device conveys the plate to the corresponding punch forming device for punch forming.

Description

Technical Field

[0001] The utility model belongs to the technical field of bag production equipment, and specifically relates to a bag stamping and forming equipment. Background Art

[0002] Bags and suitcases are essential for travel. They are used to hold clothing and other items, making them easy to carry and protecting. The outer shells of conventional bags and suitcases are often made of PC, ABS and other materials through vacuum forming. This vacuum forming method has high requirements on the tensile strength and ductility of the material and is more suitable for single components or composite panels with high tensile strength and ductility. As the homogeneity of bags becomes more and more serious, people are more pursuing differentiated designs of bags. For example, bags with different textures of different materials on the outer surface can form a differentiated design, such as textile fabrics, leather outer surfaces, etc. Figure 1 The composite board 10 shown has a base layer 11 of PC, ABS, etc., a surface layer 13 of textile fabric, leather, etc., and a molten layer 2 in the middle layer. When the surface of the substrate 11 is not solidified and is in an adhesive state, the surface layer 13 is pasted and composited with the substrate 11. However, the tensile strength and ductility of this material are low, which makes it impossible to produce it by blistering; of course, there are also composite boards using PP substrates, which do not require heating for blistering, but cut out notches in some areas of the composite board, and bend and fix the composite board on the shaped parts through shaping parts to obtain the box body. However, the external structure of the box body formed by this method is relatively simple, and the main part of the box body produced is flat, with arc transition at the bend. It is impossible to process some unique details of protrusions and depressions in the local area like blistering, so there are still some shortcomings. Summary of the invention

[0003] The utility model aims to provide a bag stamping and forming device, which is intended to solve the problem that the traditional blister process is difficult to produce composite plates.

[0004] In order to solve the above technical problems, the purpose of the utility model is achieved as follows:

[0005] A luggage stamping and forming device, comprising a conveying device, a sheet forming device, a sheet transfer device and a stamping and forming device; a plurality of the conveying devices are arranged side by side; the sheet forming device includes an extruder and a film unwinding assembly, a composite roller group, a first cooling assembly and a fixed-length cutting assembly sequentially arranged along the outlet end of the extruder; the sheet sent out from the outlet of the extruder and the film material of the film unwinding assembly enter the composite roller group synchronously for compounding, and then are cooled by the first cooling assembly; one of the conveying devices is located at the rear end of the fixed-length cutting assembly, and the sheet after fixed-length cutting is conveyed by the conveying device; the sheet transfer device is located above the conveying device and selectively transfers the sheet on the conveying device to any one of the conveying devices; the corresponding conveying device sends the sheet to the corresponding stamping and forming device for stamping and forming.

[0006] On the basis of the above solution and as a preferred solution of the above solution: the sheet transfer device includes a horizontal reciprocating movement assembly, a vertical reciprocating movement assembly and a grasping assembly, and the horizontal reciprocating movement assembly drives the grasping assembly to switch above each branch conveying device; the vertical reciprocating movement assembly drives the grasping assembly to move up and down for grasping and releasing actions.

[0007] On the basis of the above solution and as a preferred solution of the above solution: the stamping and forming device includes a downward pressing assembly, an upper mold and a lower mold, the upper mold has a mold cavity, the downward pressing assembly drives the upper mold to move down, and the lower mold is received in the mold cavity so that the lower mold and the mold cavity form a forming cavity.

[0008] On the basis of the above solution and as a preferred solution of the above solution: it further includes a sheet placing platform and a platform support assembly, the sheet placing platform is located above the lower mold, and the platform support assembly supports the sheet placing platform from below; a forming channel is opened on the sheet placing platform; after the upper mold moves down and contacts the sheet placed on the sheet placing platform, it can drive the whole sheet placing platform to move down so that the sheet is formed in the forming cavity, and during the process that the upper mold applies pressure to the sheet placing platform, the platform support assembly keeps providing a supporting force to the sheet placing platform.

[0009] On the basis of the above solution and as a preferred solution of the above solution: the lower mold has a constant temperature device.

[0010] On the basis of the above solution and as a preferred solution of the above solution: the lower mold includes a first lower mold body and a second lower mold body; the first lower mold body is buckled outside the second lower mold body to enclose a cavity; a heat transfer medium is introduced into the cavity.

[0011] Based on the above solution and as a preferred solution of the above solution: The first lower die body and the second lower die body are fixed on the lower die base and sealed with the lower die base; a connection joint is arranged on the lower die base, and the connection joint is communicated with the cavity.

[0012] Based on the above solution and as a preferred solution of the above solution: It further includes a heating device, and the heating device heats and keeps warm the plates located on the branch conveying device.

[0013] Based on the above solution and as a preferred solution of the above solution: It further includes a cooling device, and the cooling device purges and cools the die cavity of the upper die after stamping.

[0014] Based on the above solution and as a preferred solution of the above solution: At least one cooling device is provided, and each cooling device includes a driving cylinder and a nozzle fixed on the piston rod of the driving cylinder. The air outlet of the nozzle faces the die cavity and the nozzle is communicated with a gas source.

[0015] The prominent and beneficial technical effects of the present utility model compared with the prior art are: Through the device of the present application, the production, slitting, transfer and final stamping and forming of composite plates can be realized. The plates are stamped into the required box structure through the stamping and forming equipment and dies; By adopting the stamping and forming method, it can well adapt to the forming production of composite plates with low stretchability and ductility, greatly expanding the types of plates and surface layers of luggage, increasing the categories of luggage, and improving the product competitiveness. Brief Description of the Drawings

[0016] Figure 1 It is a schematic diagram of the composite plate structure;

[0017] Figure 2 It is a schematic diagram of the overall structure of the present utility model;

[0018] Figure 3 It is a schematic diagram of the plate transfer device structure;

[0019] Figure 4 It is a schematic diagram of the stamping and forming device structure;

[0020] Figure 5 It is a schematic diagram of the forming state;

[0021] Figure 6 It is a schematic diagram of the upward movement process of the upper die;

[0022] Figure 7 It is a schematic diagram of the box demoulding state;

[0023] Figure 8 It is a schematic diagram of the purging and cooling state of the upper die. Detailed implementation mode

[0024] To make the objectives, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings in the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the given embodiments, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present application.

[0025] In the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0026] In the description of the present application, terms such as "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features.

[0027] See in detail Figure 1-8 As shown, the present application discloses a luggage stamping and forming device, including a conveying device 100, a sheet forming device 200, a sheet transfer device 300, and a stamping and forming device 400.

[0028] In this implementation mode, there are multiple conveying devices 100 arranged side by side. Each conveying device 100 includes a plurality of main conveying devices 110 and a plurality of branch conveying devices 120; the main conveying device 110 includes a plurality of conveying rollers arranged side by side and a main drive motor. After passing through a speed reducer, the main drive motor drives the corresponding conveying rollers to rotate through methods such as synchronous belts and chain sprockets, realizing directional and constant-speed conveying; similarly, the branch conveying device 120 has the same structure and principle as the main conveying device 110, except that the branch conveying device 120 is arranged at the rear end of the main conveying device 110, and the sheet is moved onto the branch conveying device 120 under the conveying action of the main conveying device 110.

[0029] The sheet forming device 200 in this embodiment includes an extruder 200a, and a film unwinding assembly 220, a composite roller group 230, a first cooling assembly 240, and a fixed-length cutting assembly 250 that are sequentially arranged along the outlet end of the extruder 200a; the extruder 200a melts plastic particles and extrudes them into a sheet with a set thickness and width through a die (this is the same as the prior art and will not be elaborated here). The composite roller group 230 at least includes opposing rollers. The sheet sent out from the outlet of the extruder 200a and the film material 280 of the film unwinding assembly 220 enter between the opposing rollers of the composite roller group 230 synchronously. Since the surface of the sheet is still in a molten and adhesive state, the film material is adhered to the surface of the sheet by extrusion. Then, it is cooled by the first cooling assembly 240. After cooling, the two can be compounded. Then, it enters the fixed-length cutting assembly 250 and is cut to a fixed length and then conveyed by the main conveying device 110. In this embodiment, the fixed-length cutting assembly 250 includes a cutting machine base 251, a downward pressing drive mechanism 252 preferably a cylinder or an oil cylinder, a cutting knife 2521, and a horizontal movement assembly 253. The horizontal movement assembly 253 drags the cutting machine base 251 to move synchronously and in the same direction as the sheet during cutting; the horizontal movement assembly 253 includes a servo motor 2531, a lead screw nut pair 2532, a slide rail 2533, and a connecting seat 254. The cutting machine base 251 is fixedly arranged on the connecting seat 254. Then, by rotating the servo motor 2531 at a set speed, the cutting machine base 251 can be driven to move in a fixed direction and at a fixed speed. And when the downward pressing drive mechanism 252 moves down a sufficient distance, it can be determined that the sheet has been cut (the specific downward movement distance is measured during the machine debugging process and can be triggered and determined by a travel switch for the moving displacement distance). After cutting, the downward pressing drive mechanism 252 drives the cutting knife 2521 to quickly move up. Subsequently, the servo motor 2531 rotates in the reverse direction and drags the cutting machine base 251 back to the initial position, so that continuous production and continuous cutting of the sheet can be realized, and at the same time, the movement of the sheet will not be adversely affected due to cutting.

[0030] The sheet transfer device 300 is located above the conveying device 100, and the conveying device 100 is located at the rear end of the cutting assembly 250. The sheet transfer device 300 selectively transfers the sheet 10 on the conveying device 100 at the rear end of the fixed-length cutting assembly 250 to the adjacent conveying device 100. Then, the conveying device 100 sends the sheet 10 to the corresponding stamping and forming device 400 for stamping and forming. Specifically, in this embodiment, the main conveying device 110 and the branch conveying device 120 are arranged side by side, and one set of the main conveying device 110 and the branch conveying device 120 is arranged at the rear end of the fixed-length cutting assembly 250. That is to say, the fixed-length cut sheet sent out by the fixed-length cutting assembly 250 directly moves onto the main conveying device 110. Of course, the main conveying device 110 can selectively perform the conveying action. For example, if the main conveying device 110 directly continues to move, it will directly convey the sheet to the branch conveying device 120 at its rear end. When the sheet completely moves from the outlet end of the fixed-length cutting assembly 250 onto the main conveying device 110, at this time, the main conveying device 110 pauses. Then, the sheet transfer device 300 grabs and transfers the sheet on the main conveying device 110 to the adjacent or other main conveying device 110. Correspondingly, the main conveying device 110 with the sheet can act to convey it to the corresponding branch conveying device 120 at the rear end, and then send it into the corresponding stamping and forming device 400. See Figure 1-2 As shown, in order to achieve grasping and transfer, in this embodiment, it is preferred that the sheet transfer device 300 includes a horizontal reciprocating movement component 310, a vertical reciprocating movement component 320, and a grasping component 330. The horizontal reciprocating movement component 310 is a servo motor and a lead screw nut pair structure. The servo motor drives the nut of the lead screw nut pair to move, driving the vertical reciprocating movement component 320 and the grasping component 330 to move in the horizontal direction to achieve switching above each main conveying device 110. After reaching above the corresponding main conveying device 110, the vertical reciprocating movement component 320 drives the grasping component 330 to move up and down. Among them, it is preferred that the vertical reciprocating movement component 320 is a cylinder. The grasping component 330 includes a fixed disk and a plurality of vacuum suction cups distributed on the fixed disk. The specific number and specifications of the vacuum suction cups are adaptively selected according to the size of the sheet. When the vertical reciprocating movement component 320 drives the grasping component 330 to move down to above the main conveying device 110 and contact the surface of the sheet above it, the vacuum generator connected to the vacuum suction cups acts, thereby realizing grasping the sheet. Subsequently, the vertical reciprocating movement component 320 drives the grasping component 330 to move up. After the horizontal reciprocating movement component 310 drives it to switch to above the corresponding main conveying device 110, the vertical reciprocating movement component 320 drives the grasping component 330 to move down. Subsequently, the vacuum suction cups of the grasping component 330 are released, and the sheet is placed on the main conveying device 110, thus realizing transfer.

[0031] The stamping forming device 400 includes a downward pressing assembly 410, an upper mold 430, and a lower mold 440. The upper mold 430 has a mold cavity 430a. The downward pressing assembly 410 drives the upper mold 430 to move downward. The lower mold 440 is received in the mold cavity 430a so that the lower mold 430 and the mold cavity 430a form a forming cavity. The forming of the sheet into a box structure is determined by the specific shape of the forming cavity. Therefore, by adjusting the mold cavity of the upper mold 430 and the outer contour of the lower mold 440, the shape of the box obtained can be changed. Further, in order to ensure that the sheet 10 can undergo good plastic deformation during the stamping process when it is squeezed and deformed, the sheet 10 needs to maintain a certain temperature to make it relatively soft. Then, when it is squeezed by the upper and lower molds, plastic deformation can occur smoothly. For this purpose, in this embodiment, it is preferred that the lower mold 440 has a constant temperature device. Specifically, the lower mold 440 includes a first lower mold body 441 and a second lower mold body 442. The first lower mold body 441 is buckled outside the second lower mold body 442 to enclose a cavity 443. A heat transfer medium is introduced into the cavity 443. The first lower mold body 441 and the second lower mold body 442 are respectively fixed on the lower mold base 460 through bolts 481 / 482, and are sealed with the lower mold base 460 through sufficient seals 491 / 492 so that the heat transfer medium will not leak out. A connection joint 461 is provided on the lower mold base 460, and the connection joint 461 communicates with the cavity 443. Preferably, the heat transfer medium is heat-conducting oil, which is connected to an external heat-conducting oil heating device and a circulation pump through the connection joint 461 and a pipeline. Of course, it can be preferred that the heat-conducting oil heating device has a temperature control device capable of controlling the heating temperature of the heat-conducting oil. The heat-conducting oil is circulated by the circulation pump, so as to realize the constant positioning temperature of the lower mold 440. Then, indirectly, during the forming process, the sheet can be heated and insulated, so that it has good plastic deformation ability, which is beneficial to the forming of the box.

[0032] It further includes a sheet placing platform 450 and a platform support assembly 470. The sheet placing platform 450 is located above the lower die 440, and the platform support assembly 470 supports the sheet placing platform 450 from below. A forming channel 450a is provided on the sheet placing platform 450, and the lower die passes through the forming channel 450a. The sheet transferred to the main conveying device 110 is conveyed towards the branch conveying device 120 as the conveying rollers on the main conveying device 110 rotate, and the conveying rollers of the branch conveying device 120 continue to convey the sheet. The sheet placing platform 450 of the stamping and forming device 400 is flush with or slightly lower than the conveying plane of the branch conveying device 120. Thus, the branch conveying device 120 can send the sheet onto the sheet placing platform 450 of the stamping and forming device 400. After the upper die 430 moves downward and contacts the sheet 10 placed on the sheet placing platform 450, it can drive the entire sheet placing platform 450 to move downward, so that the sheet 10 is formed in the forming cavity. And during the process of the upper die 440 applying pressure to the sheet placing platform 450, the platform support assembly 470 maintains providing a supporting force to the sheet placing platform 450. See Figure 5-7 As shown, it is preferable that the platform support assembly 470 is a pneumatic spring or a spring. Then when the upper die 440 moves downward and presses the sheet 10 and the sheet placing platform 450, the movable end of the platform support assembly 470 will be pressed downward, causing it to compress (such as the piston rod of a pneumatic spring). Thus, the platform support assembly 470 will generate a reverse acting force to hinder the downward movement of the upper die; this enables the sheet to be close to the upper die during the forming process, but the sheet can still slide relative to the upper die. That is, when the upper die moves downward, squeezes and stretches the sheet, the edge part of the sheet can continuously move towards the forming cavity for compensation. However, the function of the platform support assembly 470 will slow down the moving speed of the edge part of the sheet towards the forming cavity, so that the sheet in the die cavity can fully participate in and be stretched to obtain a good forming effect. Based on this structure, it avoids the problem that the edge part of the sheet cannot move and is difficult to participate in the process of stretching the sheet to form a box body, and also avoids over-stretching of the sheet. Moreover, it will not cause insufficient stretching due to lack of restriction on the edge part of the sheet moving too fast towards the die cavity 403a, resulting in problems such as accumulation and wrinkles in some areas. Thus, it further improves the stretching quality of the sheet. In addition, during the process of the upper die 430 moving upward, the platform support assembly 470 lifts the sheet placing platform 450 upward. Since the edge part of the formed box body 10a is still above the sheet placing platform 450, during the process of the platform support assembly 470 lifting the sheet placing platform 450 upward, it will move upward synchronously with the box body 10a, realizing the demolding of the box body from the lower die.

[0033] Of course, during the conveying process, due to the need of the processing rhythm, the sheet will stay on the conveying device, and then cooling hardening will occur, which is not conducive to the subsequent stamping forming. Therefore, this embodiment further includes a heating device 600, and the heating device 600 heats and keeps warm the sheet located on the branch conveying device 120. As Figure 1 shown, the heating device 600 is located below the branch conveying device 120, and heats the side where the base material 11 of the sheet is located by means of a plurality of heating tubes arranged side by side or hot air, so as to keep it at a temperature not lower than the required temperature for forming. Of course, it can also be selected that the branch conveying device 120 is relatively enclosed by a box body, and heat preservation measures are added to the box body through heat preservation cotton, which is more conducive to heating the sheet. Of course, reducing heat loss is beneficial to energy conservation and consumption reduction.

[0034] During the forming process, for surface layer materials such as genuine leather, since the temperature resistance is lower than that of the base material, and during the stamping forming process, the upper die contacts the surface layer. In order to avoid the upper die accumulating heat during the production process, which may cause high-temperature damage to the surface layer during the forming process. In this embodiment, preferably, a cooling device 500 is further included, and the cooling device 500 purges and cools the cavity 430a of the upper die 430 after stamping. Specifically, the cooling devices 500 are symmetrically arranged on both sides of the upper die as shown in Figures 6-8 shown. Each cooling device 500 includes a driving cylinder 510 and a nozzle 520 fixed on the piston rod of the driving cylinder 510. The air outlet of the nozzle 520 faces the cavity 430a and the nozzle 520 is connected to a gas source. After each stamping forming is completed, the upper die 430 moves upward, and after the box body 10a after stamping is demolded, the driving cylinder 510 drives the nozzle 520 to move below the cavity and blows out compressed air. After maintaining for a set time, the driving cylinder 510 drives the nozzle to return to the initial position, thus avoiding the problem that the temperature in the cavity rises due to heat accumulation, damaging the surface layer.

[0035] The above embodiments are only the preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A luggage stamping and forming equipment, characterized in that: The invention comprises a conveying device (100), a plate forming device (200), a plate transfer device (300) and a stamping forming device (400); a plurality of the conveying devices are arranged side by side; the plate forming device (200) comprises an extruder (200a) and a film unwinding assembly (220), a composite roller group (230), a first cooling assembly (240) and a fixed-length cutting assembly (250) arranged in sequence along the outlet of the extruder (200a); the plate delivered from the outlet of the extruder (200a) and the film material (280) of the film unwinding assembly (220) are synchronously fed into the composite roller group (230) and the film material (280) of the film unwinding assembly (220) are synchronously fed into the composite roller group (230) and the film material (280) of the film unwinding assembly (250) are synchronously fed into the composite roller group (230 ...20) and the film material (280) are synchronously fed into the composite roller group (230) and the film material (280) of the film unwinding assembly (220) and the film material (280) are synchronously fed into the composite 230) for compounding, and then cooled by the first cooling component (240); one of the conveying devices (100) is located at the rear end of the fixed-length cutting component (250), and the plate after fixed-length cutting is conveyed via the conveying device (100); the plate transfer device (300) is located above the conveying device (100), and selectively transfers the plate (10) located on the conveying device (100) to any of the conveying devices (100); the corresponding conveying device (100) delivers the plate (10) to the corresponding stamping and forming device (400) for stamping and forming.

2. The bag stamping and forming equipment according to claim 1, characterized in that: The plate transfer device (300) comprises a horizontal reciprocating moving component (310), a vertical reciprocating moving component (320) and a grabbing component (330); the horizontal reciprocating moving component (310) drives the grabbing component (330) to switch above each branch conveying device (120); the vertical reciprocating moving component (320) drives the grabbing component (330) to move up and down to perform grabbing and releasing actions.

3. The bag stamping and forming equipment according to claim 1, characterized in that: The stamping and forming device (400) includes a lower pressing component (410), an upper mold (430) and a lower mold (440), wherein the upper mold (430) has a mold cavity (430a), and the lower pressing component (410) drives the upper mold (430) to move downward, and the lower mold (440) is received in the mold cavity (430a), so that the lower mold (440) and the mold cavity (430a) form a molding cavity.

4. The bag stamping and forming equipment according to claim 3, characterized in that: It also includes a plate placing platform (450) and a platform support assembly (470), wherein the plate placing platform (450) is located above the lower mold (440), and the platform support assembly (470) lifts the plate placing platform (450) from below; a molding channel (450a) is provided on the plate placing platform (450); after the upper mold (430) moves downward and contacts the plate (10) placed on the plate placing platform (450), the plate placing platform (450) can be driven to move downward as a whole, so that the plate (10) is molded in the molding cavity, and during the process of the upper mold (430) applying pressure to the plate placing platform (450), the platform support assembly (470) continues to provide support force to the plate placing platform (450).

5. The bag stamping and forming equipment according to claim 4, characterized in that: The lower mold (440) has a constant temperature device.

6. The bag stamping and forming equipment according to claim 5, characterized in that: The lower mold (440) comprises a first lower mold body (441) and a second lower mold body (442); the first lower mold body (441) is buckled onto the outside of the second lower mold body (442) to enclose a cavity (443); a heat transfer medium is introduced into the cavity (443).

7. The bag stamping and forming equipment according to claim 6, characterized in that: The first lower mold body (441) and the second lower mold body (442) are fixedly mounted on a lower mold base (460) and are sealed from the lower mold base (460); a connecting joint (461) is provided on the lower mold base (460), and the connecting joint (461) is connected to the cavity (443).

8. The bag stamping and forming equipment according to claim 2, characterized in that: It also comprises a heating device (600), wherein the heating device (600) heats and keeps warm the plate material located on the branch conveying device (120).

9. The bag stamping and forming equipment according to claim 1, characterized in that: It also includes a cooling device (500), wherein the cooling device (500) is used to purge and cool the mold cavity (430a) of the upper mold (430) after the stamping is completed.

10. The luggage stamping and forming equipment according to claim 9, characterized in that: At least one cooling device (500) is provided, and each cooling device (500) comprises a driving cylinder (510) and a blowing nozzle (520) fixed on the piston rod of the driving cylinder (510), the air outlet of the blowing nozzle (520) faces the mold cavity (430a) and the blowing nozzle (520) is connected to an air source.

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