Expanding device and foaming film production equipment

Abstract

The utility model discloses an expanding device and foaming film production discharging equipment, the expanding device comprises an expander and a supporting frame, the expander is of a circular truncated cone structure and is provided with a small end and a large end, the size of the large end is larger than that of the small end, the expander comprises a plurality of expanding bodies which are detachably connected end to end in sequence, and the expanding bodies are of circular truncated cone structures; the supporting frame is detachably connected with the extension body where the small end is located. The foaming film production equipment comprises an expanding device and a production device, the production device is provided with a discharging head, a plurality of discharging holes formed in the circumferential direction of the discharging head are formed in the side face of the discharging head, and the discharging head is arranged towards the small end. Compared with the prior art, the expansion device provided by the utility model is formed by sequentially splicing the plurality of circular truncated cone-shaped expansion bodies, so that a proper number of expansion bodies can be flexibly selected to be spliced and assembled according to production requirements, various production requirements can be met by only one set of expansion device, and the equipment cost required by production is reduced.

Description

Technical Field

[0001] This utility model relates to the field of foam film production technology, specifically to an extension device and foam film production discharge equipment. Background Technology

[0002] Existing foamed film production equipment, after processing various raw materials into foamed material, extrudes and stretches the foamed material into the required size. Generally, a conical mold is used to extend the cylindrical foamed film, which is then cut open on the side to form long strips. Producing foamed film of different widths requires the use of extension molds of different diameters, leading manufacturers to need to prepare multiple molds of different sizes, resulting in high equipment costs. Utility Model Content

[0003] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and propose an extension device and a foam film production and discharge equipment to solve the technical problem that the size of the foam film extension mold cannot be adjusted in the prior art, requiring the preparation of molds of various sizes, resulting in a large equipment cost.

[0004] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0005] In a first aspect, this utility model provides an extension device, comprising:

[0006] An extender, wherein the extender is a frustum structure having a small end and a large end, the large end being larger than the small end, the extender comprising a plurality of extenders that are detachably connected end-to-end, each extender being a frustum structure; and

[0007] A support frame is detachably connected to the extension at the small end.

[0008] In some embodiments, the support frame includes a main frame and a plurality of support rods. The main frame is detachably connected to the inner side of the smallest extension. One end of each support rod is rotatably connected to the main frame, and the other end is rotatable to abut against the inner wall of the extension.

[0009] In some embodiments, the support frame further includes a plurality of elastic elements disposed at the abutting end of the support rod, and the support rod abuts against the extension body through the elastic elements.

[0010] Secondly, this utility model provides a foamed film production equipment, including: an extension device and a production device, wherein the production device has a discharge head, and the side of the discharge head has a plurality of discharge holes arranged circumferentially thereon, and the discharge head is arranged toward the small end.

[0011] In some embodiments, the discharge head is arranged coaxially with the expander.

[0012] In some embodiments, a cutting device is also included, the cutting device including a cutter disposed on one side of the large end for cutting the bubble film.

[0013] In some embodiments, the cutting device further includes a connector fixedly connected to the cutter, and each extension has a mounting base to which the connector is detachably connected.

[0014] In some embodiments, a leveling device is further included, which is arranged on one side of the large end and includes a plurality of leveling frames arranged along the direction of travel of the foam film. Each leveling frame includes a stand and a leveling rod, the leveling rod being arc-shaped and fixedly connected to the stand. Along the direction of travel of the foam film, the curvature of the leveling rod gradually decreases and its radius gradually increases.

[0015] In some embodiments, the discharge head is arranged horizontally with the axis of the expander, the highest point of the leveling rod is flush with the upper edge of the large end, and the cutter is arranged at the lower edge of the large end.

[0016] In some embodiments, a winding device is further included, which is arranged on the side of the flattening device away from the extending device. The winding device includes a winding drum and a driver, which is connected to the winding drum to drive the winding drum to rotate so that the foam film is wound onto the winding drum.

[0017] Compared with the prior art, the extension device provided by this utility model is composed of multiple frustum-shaped extension bodies spliced ​​together in sequence. The appropriate number of extension bodies can be flexibly selected and assembled according to production needs. Only one set of extension devices can meet a variety of production needs, reducing the equipment cost required for production. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the expansion device provided in this embodiment of the utility model;

[0019] Figure 2 yes Figure 1 A cross-sectional view of the middle expander;

[0020] Figure 3 yes Figure 1 Schematic diagram of the middle support frame;

[0021] Figure 4 This is a schematic diagram of the structure of a foamed film production and discharge equipment provided in another embodiment of this utility model;

[0022] Figure 5 yes Figure 4 A schematic diagram of the structure of each paving frame. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0024] To address the technical problem of the difficulty in stably widening foamed materials to obtain large-width foam films, this invention provides an expansion device capable of expanding foam films of different sizes.

[0025] Please see Figures 1 to 3 , Figure 1 This is a schematic diagram of the structure of the expansion device provided in this embodiment of the utility model; Figure 2 yes Figure 1 A cross-sectional view of the middle expander; Figure 3 yes Figure 1 A schematic diagram of the support frame structure; the extension device includes an extender 11 and a support frame 12.

[0026] The expander 11 has a frustum structure with a small end and a large end, the large end being larger than the small end. The small end faces the discharge head 21. The expander 11 includes multiple detachable expanders 111 connected end-to-end, each expander 111 also having a frustum structure. That is, the large and small ends of two adjacent expanders 111 are connected together, and their outer diameters are the same. This allows multiple frustum-shaped expanders 111 with gradually increasing sizes to form a larger expander 11. The expander 11 adopts a modular structure, allowing for flexible selection and assembly of expanders 111 according to the size of the foamed film being produced, thus meeting diverse production needs. The support frame 12 is detachably connected to the smallest expander 111.

[0027] In some embodiments, the support frame 12 includes a main frame 121 and a plurality of support rods 122. The main frame 121 is detachably connected to the inner side of the smallest extension 111, where the smallest extension 111 is located. In some embodiments, the inner wall of the smallest extension 111 forms an insertion hole, and the main frame 121 is inserted into the corresponding insertion hole. One end of the support rod 122 is rotatably connected to the main frame 121, and the other end can be rotated to abut against the inner wall of the extension 111, thereby supporting each extension 111.

[0028] During production, firstly, according to the size of the foam film, select appropriate expanders 111 to form expanders 11, then install the assembled expanders 11 onto the main frame 121, and then erect each support rod 122 in sequence to support and fix the expanders 11.

[0029] In some embodiments, the support frame 12 further includes a plurality of elastic elements 123, which are disposed at the abutting end of the support rod 122, and the support rod 122 abuts against the extension body 111 through the elastic elements 123. The elastic elements 123 can reduce the assembly accuracy requirements between the support rod 122 and the extension body 111.

[0030] Please see Figure 4 , Figure 4 This is a schematic diagram of a foamed film production and discharge device according to another embodiment of the present invention. The foamed film production and discharge device includes: an extension device 1 and a production device 2.

[0031] Production device 2 can use existing mature production equipment, as long as it has the function of producing foamed film. Production device 2 has a discharge head 21, and the side of the discharge head 21 has a plurality of discharge holes arranged circumferentially thereon. The discharge head 21 is arranged toward the small end of the expander 11. The foamed material produced by production device 2 is extruded from the discharge holes. Since the discharge holes are arranged circumferentially, cylindrical foamed material is extruded.

[0032] The cylindrical foam material extruded from the discharge head 21 is expanded into a larger cylindrical foam film by the expander 11. Since the frustum-shaped expander 11 is a rotating body, the foam material is subjected to uniform force in all parts during the expansion process, which not only makes it less prone to breakage, but also improves the uniformity of thickness.

[0033] In some embodiments, the discharge head 21 is movably connected to the production device 2 to form an adjustable discharge gap, with the discharge hole communicating with the discharge gap. The connection can be a threaded connection, and the width of the discharge gap can be adjusted by screwing on the discharge head 21. When a wider foamed film needs to be produced, the discharge gap is widened to increase the discharge rate. When a narrower foamed film needs to be produced, the discharge gap is narrowed to reduce the discharge rate.

[0034] In some embodiments, the discharge head 21 is arranged coaxially with the expander 11 so that the foam film in each direction is expanded synchronously by the expander 11, resulting in a better expansion effect.

[0035] In some embodiments, the foam film discharging device further includes a cutting device 3, which includes a cutter 31 arranged on one side of the large end of the expander 11 to cut the cylindrical foam film 800 along the axial direction, thereby obtaining a strip-shaped foam film 800.

[0036] Please see again Figure 2In some embodiments, the cutting device 3 further includes a connector 32, which is fixedly connected to the cutter 31. Each extension 111 has a mounting base 1111, and the connector 32 can be detachably connected to the mounting base 1111. The connection method can be a pin, snap-fit, thread, magnetic attraction, etc., as long as it meets the requirements of firm connection and easy disassembly. The connector 32 can also be a clamp that clips onto the extension 111.

[0037] Please see Figure 4 and Figure 5 , Figure 5 Figure 4 shows a schematic diagram of the structure of each flattening frame. In some embodiments, the foam film discharging equipment further includes a flattening device 4, which is arranged on one side of the large end of the expander 11. The flattening device 4 includes several flattening frames 41 arranged along the traveling direction of the foam film 800. Each flattening frame 41 includes a stand 411 and a flattening rod 412. The flattening rod 412 is arc-shaped and fixedly connected to the stand 411. Along the traveling direction of the foam film 800, the curvature of the flattening rod 412 gradually decreases, while its radius gradually increases. The foam film 800 rests on the flattening rod 412. As the curvature of the flattening rod 412 gradually decreases and its radius gradually increases, the foam film 800, bent into a cylindrical shape, is gradually unfolded to form a flat, elongated strip.

[0038] In a preferred embodiment, the discharge head 21 is arranged horizontally with the axis of the expander 11. The highest point of the leveling rod 412 is flush with the upper edge of the large end of the expander 11, and the cutter 31 is arranged at the lower edge of the large end of the expander 11.

[0039] In some embodiments, the foam film discharging device further includes a winding device 5, which is arranged on the side of the flattening device 4 away from the expanding device 2. The winding device 5 includes a winding drum and a driver, which is connected to the winding drum to drive the winding drum to rotate so that the foam film is wound on the winding drum.

[0040] To better understand this utility model, the following is combined with... Figures 1 to 5 The technical solution of this utility model is described in detail as follows: The foaming material is extruded from the discharge hole to form a cylindrical foaming material, which then passes through the expander 11 from the outside and is stretched to form a larger foam film 800. The cutter 31 cuts the foam film 800 axially from the side. The foam film 800 is flattened by each flattening frame 41 to form a long strip of foam film 800, which is finally wound onto the take-up drum.

[0041] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. An extension device, characterized in that, include: An extender, wherein the extender is a frustum structure having a small end and a large end, the large end being larger than the small end, the extender comprising a plurality of extenders that are detachably connected end-to-end, each extender being a frustum structure; and A support frame is detachably connected to the extension at the small end.

2. The extension device according to claim 1, characterized in that, The support frame includes a main frame and multiple support rods. The main frame is detachably connected to the inner side of the smallest extension body. One end of each support rod is rotatably connected to the main frame, and the other end can be rotated to abut against the inner wall of the extension body.

3. The extension device according to claim 2, characterized in that, The support frame also includes multiple elastic elements, which are disposed at the abutting end of the support rod, and the support rod abuts against the extension body through the elastic elements.

4. A foamed film production equipment, characterized in that, include: The extension device and production device according to any one of claims 1-3, wherein the production device has a discharge head, and a plurality of discharge holes are formed on the side of the discharge head arranged circumferentially thereon, and the discharge head is arranged toward the small end.

5. The foamed film production equipment according to claim 4, characterized in that, The discharge head is arranged coaxially with the expander.

6. The foamed film production equipment according to claim 4, characterized in that, It also includes a cutting device, which includes a cutter arranged on one side of the large end for cutting the bubble film.

7. The foamed film production equipment according to claim 6, characterized in that, The cutting device further includes a connector that is fixedly connected to the cutter, and each of the extensions has a mounting base, the connector being detachably connected to the mounting base.

8. The foamed film production equipment according to claim 6, characterized in that, It also includes a leveling device, which is arranged on one side of the large end. The leveling device includes several leveling frames arranged along the direction of travel of the foam film. Each leveling frame includes a stand and a leveling rod. The leveling rod is arc-shaped and fixedly connected to the stand. Along the direction of travel of the foam film, the arc of the leveling rod gradually decreases and its radius gradually increases.

9. The foamed film production equipment according to claim 8, characterized in that, The discharge head is arranged horizontally with the axis of the expander, the highest point of the leveling rod is flush with the upper edge of the large end, and the cutter is arranged at the lower edge of the large end.

10. The foamed film production equipment according to claim 8, characterized in that, It also includes a winding device arranged on the side of the flattening device away from the extending device. The winding device includes a winding drum and a driver connected to the winding drum to drive the winding drum to rotate so that the foam film is wound onto the winding drum.

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