Shearing device for PET silica gel protective film

Abstract

The utility model relates to the field of silica gel protective film cutting, in particular to a cutting device for a PET silica gel protective film. The shearing device for the PET silica gel protective film comprises a table top, a rotary table, a machining plate, a tool changing structure and a switching structure, an L-shaped support is fixedly connected to the top end of the table top, an electric push rod is fixedly connected to the top end of the L-shaped support, a connecting frame is fixedly connected to the L-shaped support at the output end of the electric push rod, and the rotary table is rotationally connected to the middle of the connecting frame; cutters are installed on the outer wall of the rotary disc at equal intervals, a machining plate is rotationally connected to the top end of the table top, the machining plate is divided into two machining faces, the two machining faces rotate and are alternately used, a cutter changing structure is installed between the rotary disc and the connecting frame, and a switching structure is installed between the machining plate and the L-shaped support. By means of the innovative tool changing structure, an operator can easily achieve quick changing of the cutter, the whole cutter assembly does not need to be disassembled, the changing time is greatly saved, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of cutting silicone protective films, in particular to a shearing device for PET silicone protective films. Background Art

[0002] In current industrial production, the shearing device for PET silicone protective film plays a vital role. However, the traditional shearing device for PET silicone protective film has some obvious design deficiencies, especially in terms of rapid replacement of cutters and improvement of processing efficiency.

[0003] First, existing shearing devices for PET silicone protective film mostly use fixed cutters. Once the cutter wears out or needs to be replaced to accommodate different film material specifications, the operation is often cumbersome and time-consuming. This is mainly because replacing the cutter usually requires disassembling the entire tool assembly, which not only increases the operational difficulty but also seriously affects production efficiency. Furthermore, due to the inconvenience of cutter replacement, operators often choose to continue using the cutter even after it has been worn to a certain extent, thus affecting the cutting quality and precision of the product.

[0004] Secondly, existing PET silicone protective film shearing equipment generally uses a single-station loading, processing, and discharge process. This design results in long gaps between loading, processing, and discharge when processing a batch of products. In particular, the equipment is often idle while waiting for the next batch of products to be loaded. This not only reduces equipment utilization but also increases production costs and cycle time.

[0005] Therefore, it is necessary to provide a new shearing device for PET silicone protective film to solve the above-mentioned technical problems. Utility Model Content

[0006] In order to solve the above technical problems, the utility model provides a shearing device for PET silicone protective film.

[0007] The utility model provides a shearing device for PET silicone protective film, comprising: a table, a turntable, a processing plate, a tool changing structure and a switching structure; the top of the table is fixedly connected to an L-shaped bracket, the top of the L-shaped bracket is fixedly connected to an electric push rod, the L-shaped bracket at the output end of the electric push rod is fixedly connected to a connecting frame, the middle part of the connecting frame is rotatably connected to the turntable, the outer wall of the turntable is equidistantly equipped with cutting knives, the top of the table is rotatably connected to the processing plate, the processing plate is divided into two processing surfaces, and the two surfaces are rotated and used alternately; the tool changing structure is installed between the turntable and the connecting frame, and the switching structure is installed between the processing plate and the L-shaped bracket.

[0008] Preferably, the tool changing structure includes: a tool changing worm gear, a tool changing worm, a push rod, a connecting plate, a spring and a slot. The tool changing worm gear is fixedly connected to the axis of the turntable through a connecting rod. One side of the connecting frame is rotatably connected to the tool changing worm. The tool changing worm gear is meshed with the tool changing worm. The inner wall of the connecting frame is slidingly connected to the push rod. One end of the push rod is fixedly connected to the connecting plate. One side of the connecting plate is fixedly connected to the spring. One end of the spring is fixedly connected to the inner wall of the connecting frame. Slots corresponding to the cutters are equidistantly opened on one side of the turntable, and one end of the push rod is engaged with the slot.

[0009] Preferably, the switching structure includes: a switching worm gear, a switching worm, a one-way gear and a rack. The middle part of the processing plate is fixedly connected to the switching worm gear through a connecting rod, the bottom end of the processing plate is rotatably connected to the switching worm gear, the switching worm gear is meshed with the switching worm gear, the end of the switching worm gear away from the switching worm gear is fixedly connected to the one-way gear, the side of the connecting frame away from the tool-changing worm gear is fixedly connected to the rack, the rack is slidably connected to one side of the L-shaped bracket, and the rack is intermittently meshed with the one-way gear.

[0010] Preferably, the rack descends and drives the one-way gear to idle, and cannot drive the switching worm to rotate. When the rack rises, it drives the one-way gear to rotate, and then drives the switching worm to rotate. The rack rises once and the switching worm rotates 180 degrees.

[0011] Preferably, a plurality of blocking bars for positioning are adsorbed on the top of the processing plate.

[0012] Preferably, one end of the tool-changing worm is fixedly connected to a rotating handle.

[0013] Preferably, the cutters are fixed to the outside of the turntable at equal distances by bolts.

[0014] Preferably, one end of the push rod extends out of the connecting frame and is fixedly connected to a connecting ring.

[0015] Compared with the related art, the shearing device for PET silicone protective film provided by the present invention has the following beneficial effects:

[0016] Cutter replacement is convenient and efficient:

[0017] Through the innovative tool-changing structure, operators can easily and quickly replace the cutter without disassembling the entire tool assembly, which greatly saves replacement time and improves production efficiency.

[0018] During the knife changing process, the ingenious design of the ejector rod and the card slot ensures the stability and accuracy of the cutter during the replacement process, avoiding shearing quality problems caused by loose or misaligned cutters.

[0019] Processing efficiency is significantly improved:

[0020] The processing plate adopts a design of rotating and alternating use, which enables seamless connection of loading, processing and discharging processes, reduces idle time in the production process and improves equipment utilization.

[0021] By optimizing the switching structure, rapid switching of processing plates is achieved, further shortening the production cycle and improving the overall processing efficiency.

[0022] Easy to operate, safe and reliable:

[0023] The design of this device fully considers the convenience and safety of the operator. The tool changing and switching operations are simple and easy to understand, reducing the difficulty of operation and the risk of misoperation.

[0024] The connection design between the ejector rod and the slot and the one-way gear design of the switching structure effectively prevent equipment damage or personal injury caused by misoperation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the structure of the shearing device for the PET silicone protective film provided by the present invention;

[0026] Figure 2 for Figure 1 The structural diagram of the bottom shown;

[0027] Figure 3 for Figure 1 The schematic structural diagram of the ejector pin shown;

[0028] Figure 4 for Figure 1 The structural diagram of the card slot shown;

[0029] Figure 5 for Figure 1 Schematic diagram of the structure of the tool changing worm shown.

[0030] Numbers in the figure: 1. Table; 2. L-shaped bracket; 3. Electric push rod; 4. Connecting frame; 5. Turntable; 6. Cutter; 7. Processing plate; 8. Tool changing structure; 9. Switching structure; 81. Tool changing worm gear; 82. Tool changing worm; 83. Push rod; 84. Connecting plate; 85. Push rod; 86. Slot; 91. Switching worm gear; 92. Switching worm; 93. One-way gear; 94. Rack. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0032] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0033] See also Figure 1-5 , a shearing device for PET silicone protective film, the shearing device for PET silicone protective film includes: a table 1, a turntable 5, a processing plate 7, a tool changing structure 8 and a switching structure 9. The top of the table 1 is fixedly connected to an L-shaped bracket 2, the top of the L-shaped bracket 2 is fixedly connected to an electric push rod 3, the output end of the electric push rod 3 is fixedly connected to the L-shaped bracket 2 with a connecting frame 4, the middle of the connecting frame 4 is rotatably connected to a turntable 5, and a cutter 6 is equidistantly installed on the outer wall of the turntable 5, the top of the table 1 is rotatably connected to a processing plate 7, the processing plate 7 is divided into two processing surfaces, and they are used alternately in rotation, a tool changing structure 8 is installed between the turntable 5 and the connecting frame 4, and a switching structure 9 is installed between the processing plate 7 and the L-shaped bracket 2, a plurality of blocking bars for positioning are adsorbed on the top of the processing plate 7, the cutter 6 is equidistantly fixed to the outside of the turntable 5 by bolts, and one end of the top rod 83 extends out of the connecting frame 4 and is fixedly connected to a connecting ring.

[0034] See also Figure 3-5 The tool-changing structure 8 includes: a tool-changing worm gear 81, a tool-changing worm 82, a push rod 83, a connecting plate 84, a spring 85 and a slot 86. The axis of the turntable 5 is fixedly connected to the tool-changing worm gear 81 through a connecting rod. One side of the connecting frame 4 is rotatably connected to the tool-changing worm 82. The tool-changing worm gear 81 is meshed with the tool-changing worm 82. The inner wall of the connecting frame 4 is slidably connected to the push rod 83. One end of the push rod 83 is fixedly connected to the connecting plate 84. One side of the connecting plate 84 is fixedly connected to the spring 85. One end of the spring 85 is fixedly connected to the inner wall of the connecting frame 4. One side of the turntable 5 is equidistantly provided with slots 86 corresponding to the cutter 6. One end of the push rod 83 is engaged with the slot 86. One end of the tool-changing worm 82 is fixedly connected to the rotating handle.

[0035] It should be noted that when the cutter 6 needs to be replaced, the push rod 83 is first manually pulled to overcome the elastic force of the spring 85 and disengage it from the slot 86 of the current cutter 6. At this point, one end of the push rod 83 is no longer engaged with any slot, and the turntable 5 is in a free-rotating state. The operator then rotates the handle to rotate the tool-changing worm 82. Due to the meshing relationship between the tool-changing worm gear 81 and the tool-changing worm gear 82, the tool-changing worm gear 81 will rotate accordingly, thereby driving the turntable 5 and the connected cutter 6 to rotate together;

[0036] See also Figure 2The switching structure 9 includes: a switching worm gear 91, a switching worm 92, a one-way gear 93 and a rack 94. The middle part of the processing plate 7 is fixedly connected to the switching worm gear 91 by a connecting rod. The bottom end of the processing plate 7 is rotatably connected to the switching worm gear 92. The switching worm gear 91 is meshed with the switching worm gear 92. The end of the switching worm gear 92 away from the switching worm gear 91 is fixedly connected to the one-way gear 93. The side of the connecting frame 4 away from the tool-changing worm 82 is fixedly connected to the rack 94. The rack 94 is slidably connected to one side of the L-shaped bracket 2. The rack 94 is intermittently meshed with the one-way gear 93. When the rack 94 descends, it drives the one-way gear 93 to rotate idly and cannot drive the switching worm 92 to rotate. When the rack 94 rises, it drives the one-way gear 93 to rotate, and then drives the switching worm 92 to rotate. The rack 94 rises once and the switching worm gear 91 rotates 180 degrees.

[0037] It should be noted that after the material on the first processing surface is sheared, it is necessary to switch to the second processing surface for loading and shearing. At this point, the position of the switching worm 92 is adjusted to engage with the switching worm gear 91. Then, when the electric push rod 3 lowers the connecting frame 4, including the turntable 5 and cutter 6, to perform the shearing operation, the rack 94 on the side of the connecting frame 4 also descends synchronously. However, due to the design of the one-way gear 93, the rack 94 does not rotate the switching worm 92 when it descends.

[0038] The working principle of the shearing device for PET silicone protective film provided by the utility model is as follows:

[0039] Principle of quick cutter replacement

[0040] Initial State: In the initial state, the turntable 5 is fixedly connected to the tool-changing worm gear 81 via a connecting rod, and the tool-changing worm gear 81 is meshed with the tool-changing worm 82. Under the action of the spring 85, one end of the push rod 83 engages with the slot 86 corresponding to the currently unused cutter 6 on the turntable 5, ensuring that the cutter 6 does not fall off when the turntable 5 rotates.

[0041] Prepare to change the cutter 6: When the cutter 6 needs to be replaced, first manually pull the push rod 83 to overcome the elastic force of the spring 85 and disengage from the slot 86 of the current cutter 6. At this time, one end of the push rod 83 is no longer engaged with any slot, and the turntable 5 is in a free rotation state.

[0042] Rotating the tool-changing worm: The operator then rotates the handle to rotate the tool-changing worm 82. Due to the meshing relationship between the tool-changing worm wheel 81 and the tool-changing worm 82, the tool-changing worm wheel 81 will rotate accordingly, thereby driving the turntable 5 and the connected cutter 6 to rotate together.

[0043] Ejector Rod Engages the New Cutter: While the turntable 5 rotates, the operator must closely monitor the position of ejector rod 83 and release the tension on the ejector rod at the appropriate time. When the turntable 5 reaches the desired position—that is, when the new cutter 6 is aligned with the material on the processing plate 7 and ejector rod 83 is about to enter the corresponding slot 86 of the new cutter 6—the tension is removed. At this point, spring 85 forces one end of ejector rod 83 to automatically engage the slot 86 of the new cutter 6, locking it in place and ensuring the cutter is perpendicular to the work surface, ready for shearing.

[0044] Lock the new cutter and check: After confirming that the ejector rod 83 has correctly engaged the new cutter 6, check the position and stability of the cutter again to ensure the safety and accuracy of the cutting operation.

[0045] Principle of alternating rotation of processing plates

[0046] Initial state: The processing plate 7 is divided into two processing surfaces. Initially, one processing surface is located below the electric push rod 3 and the turntable 5, ready to receive and shear the material; the other processing surface is in an idle state, waiting for loading.

[0047] Switching Operation: After shearing the material on the first working surface, it is time to switch to the second working surface for loading and shearing. At this point, the position of the switching worm 92 is adjusted to engage with the switching worm gear 91. Then, as the electric push rod 3 lowers the connecting frame 4 (including the turntable 5 and cutter 6) to begin the shearing operation, the rack 94 on the side of the connecting frame 4 also descends synchronously. However, due to the design of the one-way gear 93, the rack 94 does not rotate the switching worm 92 as it descends.

[0048] Processing Surface Switching: When the electric push rod 3 completes the shearing operation and rises, the rack 94 also rises. At this point, the one-way gear 93 is driven by the rack 94 to rotate, which in turn drives the switching worm gear 91 through the switching worm 92, achieving a 180-degree rotation of the processing plate 7. This moves the previously idle processing surface below the electric push rod 3 and the turntable 5, ready to receive new material for shearing. The processing surface that has completed the shearing operation moves to the loading position, waiting for the finished product to be unloaded.

[0049] Repeat cycle: By continuously repeating the above switching operation, the two processing surfaces of the processing plate 7 can be used alternately, realizing a continuous and efficient production process.

[0050] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A shearing device for PET silicone protective film, characterized in that: include: A table top (1), the top of the table top (1) is fixedly connected to an L-shaped bracket (2), the top of the L-shaped bracket (2) is fixedly connected to an electric push rod (3), and the L-shaped bracket (2) is fixedly connected to a connecting frame (4) at the output end of the electric push rod (3); A turntable (5) is rotatably connected to the middle of the connecting frame (4), and cutters (6) are equidistantly installed on the outer wall of the turntable (5); A processing plate (7) is rotatably connected to the top of the table (1), and the processing plate (7) is divided into two processing surfaces, which are rotated and used alternately; A tool changing structure (8) is installed between the turntable (5) and the connecting frame (4); A switching structure (9) is installed between the processing plate (7) and the L-shaped bracket (2).

2. The shearing device for PET silicone protective film according to claim 1, characterized in that: The tool changing structure (8) comprises: a tool changing worm wheel (81), a tool changing worm (82), a push rod (83), a connecting plate (84), a spring (85) and a slot (86); the axis of the rotary disc (5) is fixedly connected to the tool changing worm wheel (81) through a connecting rod; one side of the connecting frame (4) is rotatably connected to the tool changing worm (82); the tool changing worm wheel (81) is meshed with the tool changing worm (82); the inner wall of the connecting frame (4) is slidably connected to the push rod (83); one end of the push rod (83) is fixedly connected to the connecting plate (84); one side of the connecting plate (84) is fixedly connected to the spring (85); one end of the spring (85) is fixedly connected to the inner wall of the connecting frame (4); a slot (86) corresponding to the cutter (6) is equidistantly provided on one side of the rotary disc (5); one end of the push rod (83) is snap-connected to the slot (86).

3. The shearing device for PET silicone protective film according to claim 1, characterized in that: The switching structure (9) includes: a switching worm wheel (91), a switching worm (92), a one-way gear (93) and a rack (94); the middle part of the processing plate (7) is fixedly connected to the switching worm wheel (91) through a connecting rod; the bottom end of the processing plate (7) is rotatably connected to the switching worm wheel (92); the switching worm wheel (91) is meshed with the switching worm wheel (92); one end of the switching worm wheel (92) away from the switching worm wheel (91) is fixedly connected to the one-way gear (93); a side of the connecting frame (4) away from the tool-changing worm wheel (82) is fixedly connected to the rack (94); the rack (94) is slidably connected to one side of the L-shaped bracket (2); and the rack (94) is intermittently meshed with the one-way gear (93).

4. The shearing device for PET silicone protective film according to claim 1, characterized in that: The rack (94) descends and drives the one-way gear (93) to idle, and cannot drive the switching worm (92) to rotate. When the rack (94) rises, it drives the one-way gear (93) to rotate, and then drives the switching worm (92) to rotate. The rack (94) rises once and the switching worm wheel (91) rotates 180 degrees.

5. The shearing device for PET silicone protective film according to claim 1, characterized in that: A plurality of blocking bars for positioning are adsorbed on the top of the processing plate (7).

6. The shearing device for PET silicone protective film according to claim 2, characterized in that: One end of the tool-changing worm (82) is fixedly connected with a rotating handle.

7. The shearing device for PET silicone protective film according to claim 1, characterized in that: The cutter (6) is fixed to the outside of the turntable (5) at equal distances by bolts.

8. The shearing device for PET silicone protective film according to claim 2, characterized in that: One end of the push rod (83) extends out of the connecting frame (4) and is fixedly connected to a connecting ring.

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