Embossed film casting machine and forming device therein

Abstract

The utility model discloses a forming device in an embossed film casting machine, which comprises a rack and an extrusion device arranged on the rack, the extrusion device comprises an extrusion cylinder, an extrusion mechanism arranged in the extrusion cylinder, a feed hopper arranged at the feed end of the extrusion cylinder and a die head arranged at the discharge end of the extrusion cylinder, a die opening is formed in the die head, an extrusion roller and an embossing roller which are matched with the die opening of the die head and a forming guide roller located in front of the embossing roller are horizontally arranged on the machine frame in the advancing direction of a film, a cooling channel penetrating through the embossing roller is formed in the embossing roller along the axis, and the extrusion roller is arranged on the machine frame in a sliding mode through an extrusion base. An extrusion driving device is arranged between the rack and the extrusion seat, so that the extrusion roller can do translational motion relative to the embossing roller in the horizontal direction; and the roller surface of the embossing roller is provided with concave patterns corresponding to the embossed patterns on the embossed film. The forming device disclosed by the utility model is mainly used in various embossing film casting machines.

Description

Technical Field

[0001] The utility model relates to a plastic film casting machine, in particular to an embossed film casting machine and a forming device therein. Background Art

[0002] The current embossed film casting machine has a structure including: a frame and an extrusion device arranged on the frame, the extrusion device including: an extrusion cylinder, an extrusion mechanism inserted in the extrusion cylinder, a feed hopper arranged on the feed end of the extrusion cylinder and a die head arranged on the discharge end of the extrusion cylinder, the die head is provided with a die orifice, and the frame is horizontally provided with an extrusion roller, an embossing roller, a forming guide roller, at least one traction guide roller, upper and lower traction rollers arranged up and down, at least one winding guide roller, and a pair of horizontally arranged winding drive rollers, a winding rod is floatingly provided on the pair of winding drive rollers; a cooling channel passing through the embossing roller is provided in the embossing roller along the axis, and the roller surface of the embossing roller is provided with raised patterns corresponding to the embossing on the embossed film, and the extrusion roller is a rubber roller, and the Shore A hardness of the rubber layer on its roller surface is usually between 45 and 65°. In the actual production process, the film is pressed into the rubber layer of the rubber roller through the elastic cooperation between the convex embossing on the embossing roller and the rubber roller. However, the film cannot be compacted into the rubber layer of the rubber roller, so the embossing of the embossed film cannot reach the set depth. As a result, the friction of the gloves produced using the embossed film is not ideal, and they are prone to slipping when grasping smooth objects. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a forming device in an embossed film casting machine which can increase the embossing depth.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is as follows: a forming device in an embossed film casting machine, comprising: a frame and an extrusion device arranged on the frame, the extrusion device comprising: an extrusion cylinder, an extrusion mechanism arranged in the extrusion cylinder, a feed hopper arranged on the feed end of the extrusion cylinder and a die head arranged on the discharge end of the extrusion cylinder, the die head is provided with a die opening, an extrusion roller and an embossing roller that match the die opening of the die head are horizontally arranged on the frame along the traveling direction of the film, and a forming guide roller is located in front of the embossing roller, a cooling channel that passes through the embossing roller is arranged in the embossing roller along the axis line, the extrusion roller is arranged on the frame through an extrusion seat, and the specific arrangement method is as follows: the extrusion seat is slidably arranged on the frame, and an extrusion drive device is arranged between the frame and the extrusion seat, so that the extrusion roller can perform translational movement relative to the embossing roller in the horizontal direction; the frame is also provided with an embossing forming drive device for driving the embossing roller to rotate; the roller surface of the embossing roller is provided with concave patterns corresponding to the embossing on the embossed film.

[0005] As a preferred solution, in the forming device of the embossed film casting machine, the axis line of the forming guide roller exceeds the axis line of the embossing roller upward.

[0006] As a preferred embodiment, in the forming device of the embossed film casting machine, the lower part of the die head is arranged in an inverted triangle and extends into the gap between the extrusion roller and the embossing roller, and the die opening is opened at the vertex of the triangle at the lower part of the die head; the frame is also provided with a lifting seat and a lifting drive device for driving the lifting seat to rise and fall, and the extrusion seat and the extrusion drive device are arranged on the lifting seat.

[0007] As a preferred solution, in the forming device of the embossed film casting machine, the lower part of the die head is arranged in the shape of an inverted isosceles triangle.

[0008] As a preferred embodiment, in the molding device of the embossed film casting machine, the embossing roller is a rigid roller, and the extrusion roller is a rubber roller, that is, the roller surface of the rubber roller is a rubber layer, and the Shore A hardness of the rubber layer is between 70 and 120°.

[0009] As a preferred solution, in the forming device of the embossed film casting machine, the embossing roller and the squeezing roller are both rigid rollers.

[0010] As a preferred solution, in the forming device of the embossed film casting machine, the roller surface of the extrusion roller is provided with raised patterns corresponding to the recessed patterns on the embossing roller.

[0011] The utility model also provides an embossed film casting machine that can increase the embossing depth, including: the forming device described in the utility model, along the traveling direction of the film, the frame is also provided with at least one traction guide roller, an upper traction roller and a lower traction roller arranged up and down, at least one winding guide roller, and a pair of horizontally arranged winding drive rollers, and a winding rod is floatingly provided above the gap between the pair of winding drive rollers.

[0012] As a preferred solution, in the embossed film casting machine, the upper edge of the upper traction roller is lower than the lower edge of the forming guide roller, the upper edge of the lower traction roller is higher than the lower edge of the traction guide roller, the lower edge of the winding guide roller is lower than the upper edge of the lower traction roller, and the lower edge of the winding guide roller is lower than the upper edge of the winding drive roller.

[0013] As a preferred solution, in the embossed film casting machine, the frame is a split structure, comprising: an extrusion support for mounting the extrusion device, a forming support for mounting the extrusion roller, the embossing roller and the forming guide roller, a traction support for mounting a pair of traction rollers and traction guide rollers, and a winding support for mounting a pair of winding drive rollers and winding guide rollers.

[0014] The utility model discloses the beneficial effect is:

[0015] 1. The utility model discloses a recessed pattern corresponding to the embossed pattern on the embossed film is arranged on the roller surface of the embossing roller, and the film can be pressed in the recessed pattern on the embossing roller during the embossed film forming process, thereby ensuring the embossed depth on the film. The gloves produced by the embossed film have enough friction, and are not easy to slip when grabbing smooth objects.

[0016] 2. The utility model discloses that the axis of the forming guide roller is above the axis of the embossing roller to increase the wrap angle of the embossed film on the embossing roller, thereby prolonging the cooling and setting time of the embossed film.

[0017] 3. The utility model discloses that the lower part of the die head is arranged in an inverted triangular shape, and the lower part of the die head extends into the gap between the extrusion roller and the embossing roller to shorten the distance between the die port and the embossing roller and the extrusion roller, thereby shortening the time for the molten material from the die port to the embossing roller and the extrusion roller. The molten material has a high temperature when entering the gap between the embossing roller and the extrusion roller, thereby further ensuring that the film is pressed in the recessed pattern on the embossing roller.

[0018] 4. The utility model discloses that the extrusion roller is made of a rigid roller or a rubber roller with high strength, thereby further ensuring that the film is pressed in the recessed pattern on the embossing roller.

[0019] 5. The utility model discloses that the winding rod is floatingly arranged above the gap between the pair of winding drive rollers, thereby making the winding rod more smooth when winding the embossed film.

[0020] 6. The utility model discloses that the traction guide roller, the upper traction roller and the lower traction roller, the winding guide roller and the pair of winding drive rollers are arranged in a high-low matching manner. Under the premise of meeting the cooling time of the embossed film, the length of the embossed film casting machine is shortened, and the floor area is reduced.

[0021] 7. The utility model discloses that the frame is arranged in a split structure, thereby conveniently and flexibly adjusting the relative positions of the components in the embossed film casting machine by adjusting the relative positions of the extrusion support, the forming support, the traction support and the winding support, and making the forming, traction and winding more smooth and stable. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1It is a structural schematic diagram of the first embossed film casting machine described in the utility model.

[0023] Figure 2 yes Figure 1 Schematic diagram of the enlarged structure of part A.

[0024] Figure 3 It is a structural schematic diagram of the second embossed film casting machine described in the present invention.

[0025] Figure 4 yes Figure 3 Schematic diagram of the enlarged structure of part B.

[0026] Figure 5 It is a structural schematic diagram of the third embossed film casting machine described in the present invention.

[0027] Figure 6 It is a schematic diagram of the structure of the embossed film.

[0028] Figures 1 to 6 1. Extrusion bracket, 110. Extrusion bracket guide rail, 111. Guide pulley, 113. Limit block, 114. Limit block, 12. Forming bracket, 120. Lifting seat, 13. Traction bracket, 14. Winding bracket, 2. Extrusion cylinder, 21. Extrusion mechanism, 22. Feed hopper, 23. Die head, 231. Die mouth, 3. Extrusion roller, 30. Extrusion seat, 300. Extrusion seat guide rail, 31. Raised pattern, 4. Embossing roller, 41. Concave pattern, 48. Cooling pipeline, 51. Forming guide roller, 52. Traction guide roller, 53. Winding guide roller, 61. Upper traction roller, 62. Lower traction roller, 71. First winding drive roller, 72. Second winding drive roller, 8. Winding rod, 9. Embossed film, 90. Base layer, 91. Embossed layer. DETAILED DESCRIPTION

[0029] The following describes in detail a specific implementation scheme of a forming device in an embossed film casting machine according to the present invention in conjunction with the accompanying drawings.

[0030] Example 1:

[0031] like Figure 1As shown, the first embossed film casting machine described in the present invention includes: a split frame, which includes: an extrusion bracket 11, a forming bracket 12, a traction bracket 13 and a winding bracket 14 arranged along the traveling direction of the embossed film 9, and an extrusion device is provided on the extrusion bracket 11. The extrusion device includes: an extrusion barrel 2, an extrusion mechanism 21 (usually a screw) provided in the extrusion barrel 2, a feed hopper 22 provided on the feed end of the extrusion barrel 2, and a die head 23 provided on the discharge end of the extrusion barrel 2 (the extrusion device belongs to the conventional technology in this field and will not be described in detail here). The lower part of the die head 23 is arranged in an inverted isosceles triangle. The die head 23 is provided with a slit-type die opening 231 at the vertex of the lower triangle. The forming bracket 12 is provided with an extrusion roller 3, an embossing roller 4 and a forming guide roller 51 along the traveling direction of the embossed film 9. The forming bracket 12 is provided with an embossing forming drive device for driving the embossing roller 4 to rotate (which belongs to the conventional technology in this field and will not be described in detail here); the roller surface of the embossing roller 4 is provided with a concave pattern 41 corresponding to the embossing on the embossed film 9, and the embossing roller 4 is provided with a groove along the axis. There is a cooling channel running through the embossing roller 4 (which belongs to the conventional technology in this field and will not be described in detail here), and the ports of the cooling channel at both ends of the embossing roller 4 are respectively connected to the corresponding cooling pipes 48 through rotary joints (which belongs to the conventional technology in this field and will not be described in detail here). The specific arrangement of the extrusion roller 3 is as follows: a lifting seat 120 is provided on the forming bracket 12 through a lifting slide rail, and a lifting drive device for driving the lifting seat 120 to rise and fall is provided on the forming bracket 12 (which belongs to the conventional technology in this field and will not be described in detail here). The extrusion roller 3 is provided through The extrusion seat 30 is arranged on the lifting seat 120, and the extrusion roller 3 is arranged on the extrusion seat 30. The extrusion seat 30 is slidably arranged on the lifting seat 120 through the extrusion seat guide rail 300. An extrusion driving device (usually mainly composed of a cylinder, which belongs to the conventional technology in this field and is not described in detail here) is arranged between the lifting seat 120 and the extrusion seat 30, so that the extrusion roller 3 can move horizontally relative to the embossing roller 4 (the position of the embossing roller 4 is fixed, and the extrusion roller 3 moves horizontally relative to the embossing roller 4); the lower part of the die head 23 extends into the gap between the extrusion roller 3 and the embossing roller 4 (see Figure 2As shown in FIG5 , a traction guide roller 52, an upper traction roller 61 and a lower traction roller 62 are provided on the traction bracket 13 along the traveling direction of the embossed film 9, and a winding guide roller 53 and a first winding drive roller 71 and a second winding drive roller 72 are provided on the winding bracket 14 along the traveling direction of the embossed film 9. The upper edge of the upper traction roller 61 is lower than the lower edge of the forming guide roller 51, the upper edge of the lower traction roller 62 is higher than the upper edge of the traction guide roller 52, and the upper edge of the winding guide roller 53 is lower than the lower traction roller 62, the upper edge of the winding guide roller 53 is lower than the upper edges of the first winding drive roller 71 and the second winding drive roller 72, and a winding rod 8 is floatingly arranged above the gap between the first winding drive roller 71 and the second winding drive roller 72. The specific arrangement of the winding rod 8 is as follows: the winding bracket 14 is respectively provided with baffles at both ends of the winding rod 8 for limiting the axial movement of the winding rod 8 (which belongs to the conventional technology in this field and will not be described in detail here), so that the winding rod 8 is constrained in the axial direction between the two baffles.

[0032] Example 2:

[0033] like Figure 3 and Figure 4 As shown, the second embossed film casting machine described in the present invention has a structure that is identical to that of the first embodiment except that a raised pattern 31 corresponding to the sunken pattern on the embossing roller 4 is provided on the extrusion roller 3, and will not be described in detail here.

[0034] Example 3:

[0035] like Figure 5 As shown, the third embossed film casting machine described in the present invention is different from the embodiment 1 in that the die opening 231 at the lower part of the die head 23 is higher than the upper edge of the extrusion roller 3 and as close to the upper edge of the extrusion roller 3 as possible, and the extrusion seat 30 and the extrusion drive device are directly installed on the forming bracket 12, so there is no need for a lifting slide rail, a lifting seat 120 and a lifting drive device; the rest of the structure is exactly the same as that of the embodiment 1 and will not be repeated here.

[0036] In actual application, an extrusion bracket guide rail 110 is respectively provided on the floor below the front and rear sides of the extrusion bracket 11. The front and rear sides of the extrusion bracket 11 are respectively provided with at least two guide pulleys 111 corresponding to the corresponding extrusion bracket guide rails 110. The extrusion bracket guide rail 110 is provided with limit blocks 113 and 114 at both ends. A guide bracket locking device is provided between the extrusion bracket 11 and the extrusion bracket guide rail 110 or the floor (this is a common technology in this field and will not be described in detail here). The traction bracket 13 is provided with a traction drive device for driving the lower traction roller 62 to rotate. The upper traction roller 61 is slidably provided on the traction bracket 13 in the vertical direction. The traction bracket 13 is also provided with a traction gap adjustment device for making the upper traction roller 61 move relative to the lower traction roller 62 in the vertical direction (this is a common technology in this field and will not be described in detail here); the winding bracket 14 is provided with a winding drive device for driving the first winding drive roller 71 and the second winding drive roller 72 to rotate in the same direction. The embossing roller 4 is a rigid roller, and the squeezing roller 3 can be a rigid roller or a rubber roller. If it is a rubber roller, the Shore A hardness of the rubber layer on the roller surface is between 70 and 120°.

[0037] During actual use, the extrusion roller 3 is moved to the left and away from the embossing roller 4 by the extrusion drive device, and the upper traction roller 61 is moved up by the traction gap adjustment device. Then, the plastic extruded from the die opening 231 of the die head 23 passes between the extrusion roller 3 and the embossing roller 4, is wound on the forming guide roller 51 and the traction guide roller 52 in sequence, passes between the upper and lower traction rollers 61 and 62, and is wound on the winding traction roller 53 and the winding rod 8 in sequence. Then, the extrusion roller 3 is moved to the right and close to the embossing roller 4 by the extrusion drive device, and the upper traction roller 61 is moved down and close to the embossed film 9 by the traction gap adjustment device to enter the normal production process. At this time, the plastic continuously extruded from the die opening 231 of the die head 23 is compacted in the recessed groove 41 on the embossing roller 4 when passing through the gap between the extrusion roller 3 and the embossing roller 4, and is wound onto the winding rod 8 under the traction of the upper and lower traction rollers 61 and 62, and driven by the first winding drive roller 71 and the second winding drive roller 72 rotating in the same direction (clockwise in the figure).

[0038] The embossed film 9 produced by the embossed film casting machine of the present invention has a height H1 of the embossed layer 91 that is more than 4 times the thickness T1 of the base layer 90 (see Figure 6 As shown), for the embossed film 9 with a base layer 90 having a thickness of 0.02 mm, the height of the embossed layer 91 can generally reach 0.13 mm or even greater.

[0039] In summary, the above is only a preferred embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. All equivalent changes and modifications made in accordance with the shape, structure, characteristics and spirit described in the scope of the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A forming device in an embossed film casting machine, comprising: The film is passed through the film extrusion machine and the film is passed through the film extrusion machine through the cam and the cam is passed through the cam to the frame, and the cam is passed through the cam to the frame. The film is passed through the cam and the cam is passed through the cam to the frame. The cam is passed through the cam and the cam is passed through the cam to the frame. The cam is passed through the cam and the cam is passed through the cam to the frame. The cam is passed through the cam and the cam is passed through the cam to the frame. The cam is passed through the cam and the cam is passed through the cam to the frame. The cam is passed through the cam and the cam is passed through the cam to the frame. The cam is passed through the cam and the cam is passed through the cam to the frame.

2. The forming device in the embossed film casting machine according to claim 1, characterized in that: The axis center line of the forming guide roller exceeds the axis center line of the embossing roller upwards.

3. The forming device in the embossed film casting machine according to claim 1, characterized in that: The lower part of the die head is arranged in an inverted triangle and extends into the gap between the extrusion roller and the embossing roller. The die opening is opened at the vertex of the triangle at the lower part of the die head. The frame is also provided with a lifting seat and a lifting drive device for driving the lifting seat to rise and fall. The extrusion seat and the extrusion drive device are arranged on the lifting seat.

4. The forming device in the embossed film casting machine according to claim 1, characterized in that: The lower part of the die head is arranged in an inverted isosceles triangle.

5. The forming device in the embossed film casting machine according to claim 1, characterized in that: The embossing roller is a rigid roller, and the squeezing roller is a rubber roller, that is, the roller surface of the rubber roller is a rubber layer, and the Shore A hardness of the rubber layer is between 70 and 120 degrees.

6. The forming device in the embossed film casting machine according to claim 1, characterized in that: The embossing roller and the squeezing roller are both rigid rollers.

7. The forming device in the embossed film casting machine according to claim 6, characterized in that: The roller surface of the squeezing roller is provided with raised patterns corresponding to the recessed patterns on the embossing roller.

8. An embossed film casting machine, characterized in that: The embossed film casting machine includes: a forming device according to any one of claims 1 to 7, wherein along the traveling direction of the film, at least one traction guide roller, an upper traction roller and a lower traction roller arranged up and down, at least one winding guide roller, and a pair of horizontally arranged winding drive rollers are sequentially arranged on the frame in front of the forming guide roller, and a winding rod is floatingly arranged above the gap between the pair of winding drive rollers.

9. The embossed film casting machine according to claim 8, characterized in that: The upper edge of the upper traction roller is lower than the lower edge of the forming guide roller, the upper edge of the lower traction roller is higher than the lower edge of the traction guide roller, the lower edge of the winding guide roller is lower than the upper edge of the lower traction roller, and the lower edge of the winding guide roller is lower than the upper edge of the winding drive roller.

10. The embossed film casting machine according to claim 8, characterized in that: The frame is a split structure, including: an extrusion bracket for installing the extrusion device, a forming bracket for installing an extrusion roller, an embossing roller and a forming guide roller, a traction bracket for installing a pair of traction rollers and a traction guide roller, and a winding bracket for installing a pair of winding drive rollers and a winding guide roller.

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