Film trimming device for casting machine

Abstract

The present invention discloses a film trimming device for a casting machine, comprising a support frame, a lateral adjustment device arranged on the support frame, and a cutter device arranged on the lateral adjustment device, wherein the lateral adjustment device is used to drive the cutter device to move laterally, and the cutter device comprises a mounting seat, a gear vertically and fixedly arranged on the mounting seat, a cutter disc sleeved on the outer side of the gear, and a plurality of blades arranged on the cutter disc, wherein the positioning portion is provided with a locking mechanism for limiting the relative movement of the positioning portion relative to the gear. The film trimming device for a casting machine provided by the present invention can replace a worn blade with a new blade by rotating the cutter disc, which is fast and convenient, thereby extending the blade disassembly and replacement cycle on the cutter disc and improving the debugging efficiency. The operator has a good operating space whether debugging the lateral adjustment device or rotating the cutter disc, and it is difficult to touch the blade, thereby ensuring the operator's operating safety.

Description

Technical Field

[0001] The invention relates to the field of tape casting machines, in particular to a film trimming device of a tape casting machine. Background Art

[0002] The film trimming device of the cast film machine is mainly used to cut and recycle the hard edge materials on both sides of the film that are wrinkled and shrunk during the film traction process, so that the film can be rolled up neatly at the end, and eliminate the damage caused by the hard edge materials to the rubber roller.

[0003] At present, the film trimming device of the cast film machine is as follows Figure 5 As shown, it includes a support 1', a guide rod 2' arranged transversely on the support, an adjustment seat 3' sleeved on the guide rod, two knife seats 4' arranged on the adjustment seat, and two blades 5' respectively arranged on the corresponding knife seats, and a locking mechanism for adjusting the position of the blade is arranged on the knife holder. Although the structure is simple, the blade is exposed to the outside, and the operator is easy to touch the blade and cause damage during the process of adjusting the transverse and radial position of the blade. In addition, there are only two blades on the knife holder, and the blades need to be frequently disassembled and replaced after being worn, which affects the work efficiency of the operator.

[0004] It can be seen that the existing technology still needs to be improved and enhanced. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a film trimming device for a casting machine, aiming to protect the operator from being injured by the blade during the debugging process and to extend the time period for disassembly and replacement of the blade.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A film trimming device for a casting machine, comprising a support frame, a lateral adjustment device arranged on the support frame, and a cutter device arranged on the lateral adjustment device, wherein the lateral adjustment device is used to drive the cutter device to move laterally, the cutter device comprises a mounting seat, a gear vertically and fixedly arranged on the mounting seat, a cutter disc sleeved on the outer side of the gear, and a plurality of blades arranged on the cutter disc, the cutter disc comprises a positioning part which is interference-fitted with the gear, and a cutter changing part which is screw-connected with the positioning part, the blade is fixed between the positioning part and the cutter changing part, and the positioning part is provided with a locking mechanism for limiting the relative movement of the positioning part with respect to the gear;

[0008] The positioning part is annular, and the locking mechanism includes a threaded hole penetrating the outer ring and the inner ring of the positioning part, a steel ball arranged in the threaded hole, a spring for pressing the steel ball, and an adjusting screw screwed into the threaded hole, wherein the steel ball can be stuck in the tooth groove of the gear, and the adjusting screw is used to adjust the clamping force of the steel ball on the gear; a limiting circular groove is circumferentially provided on the tooth groove of the gear, and a limiting ring is provided on the limiting circular groove, and the limiting ring is used to limit the axial movement of the positioning part;

[0009] It also includes a scrap material guiding device, which includes a fixed seat, a guide rod laterally arranged on the fixed seat, a scrap material guiding mechanism and a scrap material recovery mechanism arranged on the guide rod, the scrap material guiding mechanism includes a support arm arranged on the guide rod and a scrap material guiding rod arranged on the support arm; the scrap material recovery mechanism includes a locking part arranged on the guide rod and a scrap material recovery cylinder arranged on the locking part, and a trumpet-shaped guide port is provided at the top of the scrap material recovery cylinder.

[0010] The blade edges of the blades extend outward, and all the blades are arranged in a circular array around the center of the positioning portion.

[0011] The mounting seat is connected to the lateral adjustment device through a slide cylinder, and the mounting seat is arranged on the slide of the slide cylinder.

[0012] The lateral adjustment device is a slide electric cylinder and a controller. The slide cylinder is fixed on the slide of the slide electric cylinder, and the controller is electrically connected to the slide electric cylinder.

[0013] The lateral adjustment device is a screw slide and a hand wheel for driving the screw slide to move, and the slide cylinder is fixed on the slide of the screw slide.

[0014] A hand-tightening part is protruded on the tool changing part and is coaxially arranged with the gear. A C-shaped protective cover is arranged on the outer side of the tool disc and an avoidance hole is opened on the protective cover for the hand-tightening part to extend out.

[0015] The lateral adjustment device is provided with a scale, and a connecting plate is provided between the slide cylinder and the lateral adjustment device. The connecting plate is provided with an indicating piece for cooperating with the scale. Beneficial Effects

[0016] The present invention provides a film trimming device for a casting machine. Compared with the prior art, the lateral movement of the cutting device is achieved by adjusting the lateral adjustment device, thereby adjusting the width of the trimming; since the cutter disc is pre-set with multiple new blades for replacement, if it is found that the current trimming blade cannot be used due to wear, the worn blade can be replaced with a new blade by rotating the cutter disc, which is fast and convenient, thereby extending the blade removal and replacement cycle on the cutter disc and improving the debugging efficiency. It can be seen that the operator has a good operating space whether debugging the lateral adjustment device or rotating the cutter disc, and it is difficult to touch the blade, ensuring the operator's operating safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The present invention provides a three-dimensional film cutting device for a casting machine Figure 1 .

[0018] Figure 2 The present invention provides a three-dimensional film cutting device for a casting machine Figure 2 .

[0019] Figure 3 The present invention provides a cross-sectional view of a cutting knife device in a film trimming device of a casting machine.

[0020] Figure 4 The present invention is a right side view of a film trimming device of a casting machine.

[0021] Figure 5 The present invention is a three-dimensional diagram of a film trimming device of an existing casting machine. DETAILED DESCRIPTION

[0022] The present invention provides a film trimming device for a casting machine. In order to make the purpose, technical solution and effect of the present invention clearer and more specific, the present invention is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the scope of protection of the present invention.

[0023] See also Figure 1-Figure 4 The present invention provides a film trimming device for a casting machine, comprising a support frame 1, a lateral adjustment device 2 arranged on the support frame, and a cutter device 3 arranged on the lateral adjustment device, wherein the lateral adjustment device 2 is used to drive the cutter device 3 to move horizontally, and the cutter device 3 comprises a mounting seat 31, a gear 32 vertically and fixedly arranged on the mounting seat, a knife disc 33 sleeved on the outer side of the gear, and a plurality of blades 34 arranged on the knife disc, wherein the knife disc 33 comprises a positioning portion 33a which is interference fit with the gear, and a knife changing portion 33b which is screwed with the positioning portion, and the blade 34 is fixed between the positioning portion 33a and the knife changing portion 33b, and a locking mechanism 4 for limiting the movement of the positioning portion relative to the gear 32 is arranged on the positioning portion 33a.

[0024] For details, please refer to Figure 3 The positioning part 33a is annular, and the locking mechanism 4 includes a threaded hole 41 penetrating the outer ring and the inner ring of the positioning part, a steel ball 42 arranged in the threaded hole, a spring 43 for pressing the steel ball, and an adjusting screw 44 screwed into the threaded hole. The steel ball 42 can be stuck in the tooth groove of the gear 32, and the adjusting screw 44 is used to clamp the steel ball on the gear 32. By controlling the screwing amount of the adjusting screw 44, the compression amount of the spring 43 is adjusted, and then the radial clamping force of the steel ball 42 on the tooth groove of the gear (i.e., the elastic force of the spring on the steel ball) is adjusted. The radial clamping force can play a locking role on the positioning part, ensuring that the cutter disc 33 and the cutter 34 on the cutter disc will not rotate due to force during the trimming process; when it is necessary to replace the blade or adjust the blade position, the steel ball 42 is forced to roll along the circumference of the gear by rotating the cutter disc 33 until it is stuck in the appropriate tooth groove. Through this arrangement, the worn blade can be quickly replaced and the new blade can be quickly adjusted to the appropriate cutting position. The entire adjustment process is convenient and fast, which greatly improves the debugging efficiency of the operator.

[0025] For further information, see Figure 3 The tooth groove of the gear 32 has a circumferentially formed limiting circular groove 35, and a limiting ring 36 is provided on the limiting circular groove, and the limiting ring 36 is used to limit the axial movement of the positioning part. By providing the limiting ring 36, the positioning part 33a can be prevented from being separated from the gear 32, and the tool changing part 33b is also provided with an avoidance groove 37 adapted to the limiting ring.

[0026] In this embodiment, please refer to Figure 4 , the blades 34 are provided with 6 pieces, the blade edges of the blades extend outward, and all the blades are arranged in a circular array around the center of the positioning part. It can be seen that the blades are compactly distributed, making full use of the circumferential space of the cutter disc, and the blades do not interfere with each other. Compared with the prior art, the number of blades has increased several times, which greatly prolongs the time for disassembling and replacing all worn blades on the cutter device, and solves the problem of frequent blade changes caused by rapid wear of the blades when cutting thick films. It should be understood that there is no limit on the number of blades provided here. In order to facilitate the installation of all blades on the cutter disc, the positioning part is provided with a knife groove that matches the position of the blade and a first screw hole provided in the knife groove, a mounting hole is provided on the blade, and a second screw hole corresponding to the first screw is provided on the knife changing part. When installing the blades, all the blades are placed in the knife grooves correspondingly first, and then the screws are screwed into the second screw hole, the mounting hole, and the first screw hole in sequence to fix the blades.

[0027] Furthermore, the mounting seat 31 is connected to the lateral adjustment device 2 through a slide cylinder 5, and the mounting seat 31 is arranged on the slide of the slide cylinder 5. The advance and retreat of the cutter disc can be realized by retracting the piston rod of the slide cylinder, which is convenient for operators to repair and debug the cutter device, so as to avoid the influence of film interference on the operation during the debugging process.

[0028] In this embodiment, please refer to Figure 1 and Figure 2 The lateral adjustment device 2 is a screw slide 21 and a hand wheel 22 for driving the screw slide to move. The slide cylinder is fixed on the slide of the screw slide. The screw is driven to rotate by rotating the hand wheel, so that the screw nut on the screw moves horizontally, and the slide connected to the screw nut moves horizontally. The operation is simple and safe, and the position accuracy is high. Since the operator maintains a relatively far operating space from the cutter disc when adjusting the lateral position of the cutter device, the risk of the blade injuring people is well avoided.

[0029] In another embodiment, the lateral adjustment device is a slide cylinder and a controller, the slide cylinder is fixed on the slide of the slide cylinder, and the controller is electrically connected to the slide cylinder. The controller is preferably a PLC controller; the operator can realize the lateral movement of the cutter device by controlling the controller, and the operator maintains a relatively far operating space from the cutter disc when debugging the lateral position of the cutter device, which effectively avoids the risk of the blade injuring people. In addition, since the slide cylinder is electrically driven, the debugging labor of the operator can be reduced.

[0030] See Figure 1 The film trimming device of the casting machine also includes a material edge guide device 6, which includes a fixed seat 61 for installation on the frame, a guide rod 62 arranged horizontally on the fixed seat, a material edge guide mechanism 63 arranged on the guide rod, and a material edge recovery mechanism 64, wherein the material edge guide mechanism 63 includes a support arm 63a arranged on the guide rod and a material edge guide rod 63b arranged on the support arm; the material edge recovery mechanism 64 includes a locking portion 64a arranged on the guide rod and a material edge recovery cylinder 64b arranged on the locking portion, and a trumpet-shaped guide port 64c is provided at the top of the material edge recovery cylinder. After the material edge is cut, it enters the material edge recovery cylinder 64b through the guidance of the material edge guide rod 63b, and then the material edge recovery device 64 pulls and collects the material edge, ensuring the timely processing and recovery of the material edge, avoiding affecting the normal trimming of the cutting device, and ensuring the trimming effect. The support arm and the locking portion are both provided with locking screws. When the support arm or the locking portion moves laterally to an appropriate position along the guide rod, the locking screws are tightened to lock the position.

[0031] Preferably, see Figure 1 and Figure 3A hand-tightening portion 33c is protruded from the blade changing portion 33b, and the hand-tightening portion 33c is coaxially arranged with the gear 32. The operator can rotate the cutter disc 33 by twisting the hand-tightening portion 33c, which is simple and convenient to operate. Since the hand-tightening portion is arranged perpendicular to the blade and there is a certain operating space, the possibility of the operator being injured by the blade when rotating the cutter disc is greatly reduced. In order to further prevent the operator from touching the blade when rotating the cutter disc, a C-shaped protective cover 7 is arranged on the outer side of the cutter disc, and an avoidance hole for the hand-tightening portion to extend is opened on the protective cover.

[0032] Preferably, see Figure 2 The lateral adjustment device is provided with a scale 81 (schematically drawn), and a connecting plate 82 is provided between the slide cylinder and the lateral adjustment device, and an indicator sheet 83 for cooperating with the scale is provided on the connecting plate. When trimming films of different sizes, the operator can better adjust the lateral position of the blade by observing the reading of the indicator sheet, so that the film roll finally rolled up meets the size requirements.

[0033] In summary, before trimming the film, the operator controls the piston rod of the slide cylinder to retract, retracts the cutter disc, and moves the cutter device laterally by adjusting the lateral adjustment device, thereby adjusting the width of the trimming; since the cutter disc has been pre-set with multiple new blades for replacement, if it is found that the current trimming blade cannot be used due to wear, the worn blade can be replaced with a new blade by rotating the cutter disc, which is quick and convenient, thereby extending the blade removal and replacement cycle on the cutter disc and improving the debugging efficiency. It can be seen that the operator has a good operating space whether debugging the lateral adjustment device or rotating the cutter disc, and it is difficult to touch the blade, ensuring the operator's work safety. In addition, by setting a protective cover on the outside of the knife seat, the operator is further prevented from touching the blade when rotating the cutter disc.

[0034] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of the present invention, and all these changes or substitutions should fall within the protection scope of the present invention.

Claims

1. A film trimming device for a casting machine, characterized in that: The invention comprises a support frame, a lateral adjustment device arranged on the support frame, and a cutting device arranged on the lateral adjustment device, wherein the lateral adjustment device is used to drive the cutting device to move horizontally, and the cutting device comprises a mounting seat, a gear vertically and fixedly arranged on the mounting seat, a cutter disc sleeved on the outer side of the gear, and a plurality of blades arranged on the cutter disc, the cutter disc comprises a positioning part which is interference-fitted with the gear, and a cutting part which is screwed connected with the positioning part, the blade is fixed between the positioning part and the cutting part, and a locking mechanism for limiting the relative movement of the positioning part relative to the gear is arranged on the positioning part; the positioning part is annular, and the locking mechanism comprises a threaded hole which passes through the outer ring and the inner ring of the positioning part, a steel ball arranged in the threaded hole, a spring for pressing the steel ball, and an adjusting screw screwed into the threaded hole, the steel ball can be stuck in the tooth groove of the gear, and the adjusting screw is used to adjust the clamping force of the steel ball on the gear; a limiting circular groove is circumferentially provided on the tooth groove of the gear, and a limiting ring is arranged on the limiting circular groove, and the limiting ring is used to limit the axial movement of the positioning part; It also includes a scrap material guiding device, which includes a fixed seat, a guide rod laterally arranged on the fixed seat, a scrap material guiding mechanism and a scrap material recovery mechanism arranged on the guide rod, the scrap material guiding mechanism includes a support arm arranged on the guide rod and a scrap material guiding rod arranged on the support arm; the scrap material recovery mechanism includes a locking part arranged on the guide rod and a scrap material recovery cylinder arranged on the locking part, and a trumpet-shaped guide port is provided at the top of the scrap material recovery cylinder.

2. The film trimming device of the casting machine according to claim 1, characterized in that: The blade edges of the blades extend outward, and all the blades are arranged in a circular array around the center of the positioning portion.

3. The film trimming device of the casting machine according to claim 1, characterized in that: The mounting seat is connected to the lateral adjustment device through a slide cylinder, and the mounting seat is arranged on the slide of the slide cylinder.

4. The film trimming device of the casting machine according to claim 3, characterized in that: The lateral adjustment device is a slide electric cylinder and a controller. The slide cylinder is fixed on the slide of the slide electric cylinder, and the controller is electrically connected to the slide electric cylinder.

5. The film trimming device of the casting machine according to claim 3, characterized in that: The lateral adjustment device is a screw slide and a hand wheel for driving the screw slide to move, and the slide cylinder is fixed on the slide of the screw slide.

6. The film trimming device of the casting machine according to claim 1, characterized in that: A hand-tightening part is protruded on the tool changing part and is coaxially arranged with the gear. A C-shaped protective cover is arranged on the outer side of the tool disc and an avoidance hole is opened on the protective cover for the hand-tightening part to extend out.

7. The film trimming device of the casting machine according to claim 4, characterized in that: The lateral adjustment device is provided with a scale, and a connecting plate is provided between the slide cylinder and the lateral adjustment device. The connecting plate is provided with an indicating piece for cooperating with the scale.

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