An automatic film cutting device for lost foam mold

Abstract

A kind of film cutting device of automatic film covering machine of lost foam, it belongs to lost foam equipment technical field, it includes mounting seat, first support component, cutter unit, second support component and control cabinet, wherein mounting seat is set up in pairs, corresponding pair of support columns is arranged at the both sides of film conveying line, two mounting seats are respectively installed on two support columns, first support component and second support component are respectively arranged on two mounting seats, two ends of cutter unit are respectively connected on first support component and second support component, it is erected above film by first support component and second support component, first support component is electrically connected with control cabinet by corresponding circuit, control cabinet is electrically connected with the main controller of film covering machine by external connection.This utility model is more automated, better precision, more time-saving and labor-saving, also more safe.

Description

Technical Field

[0001] This utility model belongs to the technical field of lost foam casting equipment, and in particular relates to a film cutting device for automatically cutting and separating the film from the roll after lost foam casting is completed. Background Technology

[0002] In the automated coating process of lost foam casting, after the coating machine removes the EVA film from the roll and covers the foam model, the used film needs to be cut and separated from the subsequent roll. Currently, the common practice is to manually cut the film with a hand-held cutter or a simple mechanism after the coating head picks up and lifts it. This manual cutting method is inefficient and affects the subsequent sand filling and molding. Utility Model Content

[0003] The purpose of this invention is to provide a film cutting device that automatically cuts and separates film from roll material, in order to solve the technical problem that manual cutting is commonly used after lost foam coating, which is not only inefficient but may also affect subsequent sand filling molding.

[0004] To achieve the above objectives, the specific technical solution of this utility model is as follows: An automatic lost foam coating machine film cutting device includes a mounting base, a first support assembly, a cutting unit, a second support assembly, and a control cabinet. The mounting bases are arranged in pairs, with a corresponding pair of support columns on both sides of the film conveying line. The two mounting bases are respectively mounted on the two support columns. The first support assembly and the second support assembly are respectively mounted on the two mounting bases. The two ends of the cutting unit are respectively connected to the first support assembly and the second support assembly, and it is supported above the film through the first support assembly and the second support assembly. The first support assembly is electrically connected to the control cabinet through a corresponding circuit, and the control cabinet is electrically connected to the main controller of an external coating machine.

[0005] Furthermore, the cutting unit includes a crossbeam, a blade holder, and a blade. The two ends of the crossbeam are respectively connected to the first support assembly and the second support assembly. The upper end of the blade holder is fixedly connected to the crossbeam, and the lower end extends downwards from the crossbeam. The blade is located below the blade holder.

[0006] Furthermore, the second support assembly includes a support rod mounted on a corresponding side mounting base, a Y-shaped bracket above the support rod, and the end of the crossbeam inserted into the slot of the bracket and rotatably connected to the side wall of the bracket via a pivot.

[0007] Furthermore, the blade is equipped with a heating device, which includes a heating wire disposed on the side wall of the blade. The heating wire is covered with a protective shell. The end of the blade holder is equipped with a control box connected to the heating wire. The heating device is connected to the control cabinet through the control box.

[0008] Furthermore, the first support assembly includes a first cylinder mounted on a corresponding side mounting base, a first telescopic rod at the top of the first cylinder, a slide rod above the first telescopic rod, a slide groove corresponding to the slide rod at the corresponding end of the crossbeam, and the crossbeam is slidably connected to the first support assembly through the cooperation of the slide groove and the slide rod. A solenoid valve electrically connected to the control cabinet is provided on the air pipe of the first cylinder.

[0009] Furthermore, the first support assembly includes a first cylinder with a first telescopic rod at its top, and the second support assembly includes a second cylinder with a second telescopic rod above it. The first and second cylinders are respectively fixedly mounted on two mounting bases. The top ends of the first and second telescopic rods are provided with a pair of corresponding brackets. The two ends of the crossbeam are respectively connected to the two brackets. The air pipe of the first cylinder is provided with a solenoid valve electrically connected to the control cabinet, and the air pipe of the second cylinder is connected in parallel to the air pipe of the first cylinder.

[0010] Furthermore, the control cabinet includes a cabinet, with a display screen and control buttons on the outer wall of the cabinet, and a PLC controller inside the cabinet, which is connected to the outside via the PLC controller.

[0011] Furthermore, the side wall of the support column is provided with a mounting frame from top to bottom in the vertical direction. The height of each mounting frame corresponds to a different model of sand box. The bottom of the mounting base is provided with a crossbar, which is detachably and fixedly installed to the mounting frame through the crossbar.

[0012] This utility model of an automatic lost foam coating machine film cutting device achieves a high degree of automation in film cutting through the cooperation of multiple mechanical components, saving manpower, time and effort, and making the film cutting more precise, production efficiency higher, and safer and more reliable. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model; Figure 2 This utility model Figure 1 Top view; Figure 3 This is a schematic diagram of the structure during installation and use of Embodiment 1 of this utility model; Figure 4 This utility model Figure 3 A magnified view of a section at point A in the middle; Figure 5 This is a schematic diagram of the structure of Embodiment 2 of the present invention; Figure 6 This utility model Figure 5 Enlarged right section view; The markings in the diagram are as follows: 1. Mounting base; 11. Support column; 12. Bracket; 13. Slide rod; 14. Mounting frame; 15. Crossbar; 2. Cutting unit; 21. Crossbeam; 22. Blade holder; 23. Blade; 24. Heating wire; 25. Control box; 26. Slide groove; 3. Control cabinet; 4. Film; 41. Laminating machine; 42. Sand box; 43. Sand feeder; 5. Support rod; 6. First cylinder; 61. First telescopic rod; 62. Solenoid valve; 7. Second cylinder; 71. Second telescopic rod. Detailed Implementation

[0014] To better understand the purpose, structure, and function of this utility model, the following description, in conjunction with the accompanying drawings, provides a more detailed description of the film cutting device for an automatic lost foam coating machine.

[0015] Example 1 like Figure 1-4 As shown, the film cutting device of the automatic lost foam coating machine of this utility model is mounted above the conveying film 4. A pair of corresponding support columns 11 are provided on both sides of the film 4 conveying line. The film cutting device is mounted above the film 4 via the two support columns 11. It includes a mounting base 1, a first support assembly, a cutting unit 2, a second support assembly, and a control cabinet 3. The mounting bases 1 are arranged in pairs, and the two mounting bases 1 are detachably and fixedly mounted on the support columns 11 on one side of the film 4. The first support assembly and the second support assembly correspond to each other and are respectively mounted on the two mounting bases 1. The two ends of the cutting unit 2 are respectively connected to the first support assembly and the second support assembly, and it is mounted above the film 4 via the first support assembly and the second support assembly. The first support assembly is connected to the control cabinet 3 via corresponding circuits. Electrically connected, the film cutting device is electrically connected to the main controller of the laminating machine 41 through the control cabinet 3. During installation and use, the film cutting device is located on the other side of the sand feeder 43 opposite to the laminating machine 41. A track for conveying the sand box 42 is provided below the sand feeder 43. The sand box 42 slides along the track to the bottom of the sand feeder 43. Both the film cutting device and the laminating machine 41 are located above the sand box 42. In the non-working state, the film cutting device is in the open state. After the sand feeder adds sand to the sand box 42, the film 4 is covered on the sand box 42 under the action of the laminating machine 41. After the film is covered, the control cabinet 3 starts the film cutting device according to the signal of the laminating machine 41 controller. The cutting unit 2 can rotate up and down in the vertical direction around the top of the second support component under the action of the first support component, thereby realizing the cutting of the film 4.

[0016] The cutting unit 2 includes a crossbeam 21, a blade holder 22, and a blade 23. It is connected to a first support assembly and a second support assembly via the crossbeam 21. In this embodiment, the first support assembly includes a first cylinder 6 whose bottom end is fixedly connected to a corresponding side mounting base 1. A corresponding first telescopic rod 61 is provided at the top of the first cylinder 6. The second support assembly includes a support rod 5 whose bottom end is fixedly connected to a corresponding side mounting base 1. A Y-shaped bracket 12 is provided above the support rod 5. The bottom end of the bracket 12 is fixedly connected to the top of the support rod 5. The end of the crossbeam 21 is inserted into the slot of the Y-shaped bracket 12 and is rotatably connected to the side wall of the bracket 12 via a rotating shaft. The other end of the crossbeam 21 opposite to the support rod 5 is provided with a vertically penetrating sliding groove 26. 21 is slidably connected to the first telescopic rod 61 of the first cylinder 6 via the slide groove 26. A fixedly connected knife holder 22 is provided on the crossbeam 21. In this embodiment, the knife holder 22 is an inverted L-shape corresponding to the crossbeam 21. Its upper end rests on the crossbeam 21, and the two are fixedly connected together by welding. Its lower end extends downwards from the crossbeam 21. The blade 23 is located below the knife holder 22. In this embodiment, the blade 23 is provided with a threaded hole. It is detachably fixedly connected to the rear side wall of the knife holder 22 by an external bolt. The length of the blade 23 is greater than the width of the film 4, and its cutting edge extends downwards from the knife holder 22. During operation, the crossbeam 21 can rotate up and down around the top of the support rod 5 under the action of the first cylinder 6, thereby cutting the film 4 under the blade 23.

[0017] Furthermore, the blade 23 is equipped with a heating device, which includes an electric heating wire 24 located on the side wall of the blade 23 and a control box 25 connected to the electric heating wire 24 located above one end of the blade holder 22. The heating device is connected to the control cabinet 3 through the control box 25. During operation, the control cabinet 3 controls the electric heating wire 24 through the control box 25. Under control, the electric heating wire 24 heats the blade 23, thereby melting the film 4. The hot cutting method instantly melts the film 4 at high temperature, resulting in a neat, smooth, and burr-free cut without any pulling phenomenon, which improves the cutting quality and ensures the coating quality. At the same time, it avoids physical damage to the vacuum sealing strip of the coating head, reduces the impact on the coating machine 41, and extends the service life of the coating machine 41. The electric heating wire 24 is equipped with a heat-insulating protective shell to prevent burns to the staff due to its high temperature.

[0018] Furthermore, an I-shaped sliding rod 13 is provided above the first telescopic rod 61. The bottom end of the sliding rod 13 is fixedly connected to the top of the first telescopic rod 61. The I-shaped sliding rod 13 corresponds to the crossbeam 21. The radial dimension of its vertical rod corresponds to the width of the groove 26 of the crossbeam 21, and its axial dimension is greater than the depth of the groove 26. The radial dimension of its horizontal rod is greater than the width of the groove 26. The first cylinder 6 is slidably connected to the crossbeam 21 of the cutter unit 2 through the sliding rod 13. A solenoid valve 62 is provided on the air pipe of the first cylinder 6, which is electrically connected to the control cabinet 3 through the solenoid valve 62. In use, under normal conditions, the first telescopic rod 61 is in the extended state, which drives the crossbeam. 21 is in an inclined state with its corresponding end raised, which facilitates the passage of the film 4 below it. When the film 4 needs to be cut, the solenoid valve 62 is opened under the control of the control cabinet 3, which releases the air in the first cylinder 6, causing the first telescopic rod 61 to retract. While the slide rod 13 slides in the slide groove 26, it drives the corresponding end of the crossbeam 21 to move downward, causing the crossbeam 21 to rotate downward around the pivot at the top of the Y-shaped bracket 12, so that the blade 23 cuts the film 4 below. After the cutting is completed, the first cylinder 6 is inflated under the control of the control cabinet 3, which causes the first telescopic rod 61 to extend to return to its original state, ready for the next cutting.

[0019] Furthermore, the control cabinet 3 includes a housing, inside which is a PLC controller, which is electrically connected to the first cylinder 6, the laminating machine 41 and the heating device. The outer wall of the housing is equipped with a display screen and control buttons. In this embodiment, the control cabinet 3 is fixedly installed on the support column 11 on one side of the film 4 through the housing. The operator controls the control cabinet 3 and presets the program through the display screen and control buttons.

[0020] Furthermore, a mounting frame 14 is provided on the side wall of the support column 11. Multiple mounting frames 14 are installed vertically from top to bottom on the side wall of the support column 11, and their heights correspond to different models of sand boxes 42. A crossbeam 21 is provided at the bottom of the mounting base 1. The mounting base 1 is installed at one end of the crossbeam 21, and the mounting base 1 is connected to the support column 11 through the other end of the crossbeam 21. In this embodiment, threaded holes corresponding to the mounting frame 14 and the mounting base 1 are provided at both ends of the crossbeam 21. The mounting frame 14 and the mounting base 1 are also provided with corresponding threaded holes. Their two ends are detachably and fixedly connected to the mounting frame 14 and the mounting base 1 through external bolts in the threaded holes.

[0021] During operation, the film cutting device of this invention's lost foam automatic coating machine is mounted on the other side of the sand feeder opposite the coating machine 41, above the sand box 42 via a support column 11. After the sand box 42 slides along the track to the bottom of the sand feeder and sand is added, the film 4 passes under the cutting unit 2 of the film cutting device and is coated by the coating machine 41. After coating, the coating machine 41 transmits a signal to the control cabinet 3. Upon receiving the signal, the control cabinet 3 starts the first cylinder 6, which drives the first telescopic rod 61 to retract. The first telescopic rod 61 then drives the cutting unit 2 to rotate downward around the Y-shaped bracket 12 to cut the film 4. After cutting, the first cylinder 6, under the control of the control cabinet 3, causes the first telescopic rod 61 to extend, which in turn drives the cutting unit 2 to rotate upward and return to its original position for the next cut.

[0022] The automatic film cutting device of this lost foam coating machine has a simple structure. Through the cooperation of multiple mechanical parts, it realizes the automatic cutting of the film 4. Its ingenious structure can be linked with the sand filling line to achieve precise film cutting after coating, improve the automation level of coating and sand filling work, make its production efficiency higher, and make it safer and more reliable, reducing the possibility of danger caused by manual operation.

[0023] Example 2 like Figure 5-6As shown, the design is further optimized based on the technology of Embodiment 1. A second cylinder 7 replaces the support rod 5. The second support assembly includes a second cylinder 7 fixedly mounted on the corresponding side mounting base 1. The first cylinder 6 and the second cylinder 7 are respectively fixedly mounted on the two mounting bases 1. A second telescopic rod 71 is provided above the second cylinder 7. The bottom end of the bracket 12 above it is fixedly connected to the top of the second telescopic rod 71. A Y-shaped bracket 12 replaces the I-shaped slide rod 13. The slide groove 26 end of the crossbar 15 is shortened, and the slideway is removed. Thus, a corresponding pair of brackets 12 are provided at the top of the first telescopic rod 61 and the second telescopic rod 71. The bottom of the bracket 12 above the first cylinder 6 is fixedly connected to the top of the first telescopic rod 61. The two ends of the crossbeam 21 are respectively connected to the two brackets 12. The air pipe of the second cylinder 7 is connected in parallel to the air pipe of the first cylinder 6. In this embodiment, the air pipe of the second cylinder 7 passes through the two mounting bases 1. The portal frame spans the film conveyor line, is laid along the top surface of the portal frame, and then spans the film. It is connected in parallel to the air pipe of the first cylinder 6. The solenoid valve 62 controls the synchronous action of the first cylinder 6 and the second cylinder 7 by controlling the air inlet and outlet of the air pipe. In use, the first telescopic rod 61 and the second telescopic rod 71 are both in the extended state when not cutting. After the film is covered, the film covering machine 41 transmits a signal to the control cabinet 3. The control cabinet 3 receives the signal and starts the first cylinder 6 and the second cylinder 7. Under the control of the solenoid valve 62, the first telescopic rod 61 and the second telescopic rod 71 are synchronously contracted. Then, through the two supports 12, the crossbar 15 is moved downward to cut the film 4. After the cutting is completed, the first cylinder 6 and the second cylinder 7 are controlled by the control cabinet 3 to make the first telescopic rod 61 and the second telescopic rod 71 extend synchronously, thereby driving the cutter unit 2 to return to its original position for the next cut.

[0024] This design is more automated, more compact, requires less operating space, and is safer.

[0025] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A film cutting device for an automatic lost foam casting machine, characterized in that, It includes a mounting base (1), a first support assembly, a cutter unit (2), a second support assembly, and a control cabinet (3). The mounting bases (1) are arranged in pairs, and a pair of corresponding support columns (11) are provided on both sides of the film (4) conveying line. The two mounting bases (1) are respectively installed on the two support columns (11). The first support assembly and the second support assembly are respectively installed on the two mounting bases (1). The two ends of the cutter unit (2) are respectively connected to the first support assembly and the second support assembly. It is mounted above the film (4) through the first support assembly and the second support assembly. The first support assembly is electrically connected to the control cabinet (3) through a corresponding circuit. The control cabinet (3) is electrically connected to the main controller of the external laminating machine (41).

2. The film cutting device for the lost foam automatic coating machine according to claim 1, characterized in that, The cutting unit (2) includes a crossbeam (21), a blade holder (22), and a blade (23). The two ends of the crossbeam (21) are respectively connected to the first support assembly and the second support assembly. The upper end of the blade holder (22) is fixedly connected to the crossbeam (21), and the lower end extends downwards from the crossbeam (21). The blade (23) is located below the blade holder (22).

3. The film cutting device for the lost foam automatic coating machine according to claim 2, characterized in that, The second support assembly includes a support rod (5) mounted on the corresponding side mounting base (1), a Y-shaped bracket (12) is provided above the support rod (5), the end of the crossbeam (21) is inserted into the slot of the bracket (12) and is rotatably connected to the side wall of the bracket (12) by a rotating shaft.

4. The film cutting device for the lost foam automatic coating machine according to claim 2, characterized in that, The blade (23) is equipped with a heating device, which includes an electric heating wire (24) on the side wall of the blade (23). The electric heating wire (24) is provided with a protective shell. The end of the blade holder (22) is provided with a control box (25) connected to the electric heating wire (24). The heating device is connected to the control cabinet (3) through the control box (25).

5. The film cutting device for the lost foam automatic coating machine according to claim 2, characterized in that, The first support assembly includes a first cylinder (6) mounted on a corresponding side mounting base (1). The top of the first cylinder (6) is provided with a first telescopic rod (61). A slide rod (13) is provided above the first telescopic rod (61). The corresponding end of the crossbeam (21) is provided with a slide groove (26) corresponding to the slide rod (13). The crossbeam (21) is slidably connected to the first support assembly through the cooperation of the slide groove (26) and the slide rod (13). The air pipe of the first cylinder (6) is provided with a solenoid valve (62) electrically connected to the control cabinet (3).

6. The film cutting device for the lost foam automatic coating machine according to claim 2, characterized in that, The first support assembly includes a first cylinder (6), and a first telescopic rod (61) is provided on the top of the first cylinder (6). The second support assembly includes a second cylinder (7), and a second telescopic rod (71) is provided above the second cylinder (7). The first cylinder (6) and the second cylinder (7) are respectively fixedly installed on two mounting seats (1). The top ends of the first telescopic rod (61) and the second telescopic rod (71) are provided with a pair of corresponding brackets (12). The two ends of the crossbeam (21) are respectively connected to the two brackets (12). The air pipe of the first cylinder (6) is provided with a solenoid valve (62) electrically connected to the control cabinet (3). The air pipe of the second cylinder (7) is connected in parallel to the air pipe of the first cylinder (6).

7. The film cutting device for the automatic lost foam casting machine according to claim 1, characterized in that, The control cabinet (3) includes a cabinet, a display screen and control buttons on the outer wall of the cabinet, and a PLC controller inside the cabinet, which is connected to the outside through the PLC controller.

8. The film cutting device for the lost foam automatic coating machine according to claim 1, characterized in that, The support column (11) has a mounting frame (14) on its side wall in the vertical direction from top to bottom. The height of each mounting frame (14) corresponds to a different model of sand box (42). The bottom of the mounting base (1) is provided with a crossbar (15), which is detachably fixed to the mounting frame (14) through the crossbar (15).

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