Plastic plate cutting device with positioning structure

Abstract

The invention provides a plastic plate cutting device with a positioning structure, and relates to the technical field of cutting devices. The material cutting mechanism comprises a main frame, a sliding groove and a gear, a guide roller is rotationally installed in the middle of the rear side of the main frame, a cutter connected with a hydraulic machine is arranged at the top of the main frame, the position of a pressing rod on a lifting frame is adjusted according to the length of a plastic plate needing to be cut, and the pressing rod is fixed through a movable part. When the plastic plate pushes the push plate to extend out of the front side of the main frame by a certain length, the pressing plate can press the position, needing to be cut, of the plastic plate, manual intervention and measurement are not needed every time, cutting efficiency and accuracy can be effectively improved, and the problems that an existing plastic plate cutting device is lack of a positioning device, and the positioning device cannot be used for positioning the plastic plate in the cutting process are solved. The cutting length needs to be measured by a worker in advance every time, so that the efficiency of cutting the plastic plate is low, and the use requirement cannot be met.

Description

Technical Field

[0001] The invention relates to the technical field of cutting devices, and in particular to a plastic plate cutting device with a positioning structure. Background Art

[0002] With the rapid development of economy and technology, plastic products are common items in our daily life. Various kinds of plastic products have appeared on the market. With the increasing demand for plastic products, plastic product processing plants have gradually developed. In the production process of plastic boards, cutting equipment is generally used to cut the plastic boards, so that large pieces of plastic boards are evenly cut into small pieces to facilitate subsequent processing and production.

[0003] For example, application number: CN201711466287.7 involves a cutting device for plastic plates, including a machine base and a cutting knife, a support plate and a processing table are provided on the machine base; a first spring is provided on the support plate, and a lifting plate is provided on the first spring; a motor is provided on one end of the lifting plate, and the rotating shaft of the motor is fixedly connected to the cutting knife, and an iron inclined wedge is provided on the other end of the lifting plate; a processing groove is provided on the processing table, rocker arms are hinged on both sides of the processing groove, and a second spring is provided between the rocker arms and the processing table; fixed shafts are provided on both sides of the processing groove, and guide wheels are rotatably connected to the fixed shafts; a threaded hole is provided on the side wall of the processing table, and a threaded rod is threadedly connected to the threaded hole, a permanent magnet is provided on the threaded rod that is against the inclined wedge, and the permanent magnet is inclined toward the processing table, and the thickness of the permanent magnet is greater than the thickness of the inclined wedge. This solution mainly solves the problem that it is inconvenient to collect powder chips in the current plastic plate cutting method.

[0004] As for the existing plastic plate cutting device, its stability is poor. When cutting, at the moment when the cutter contacts the plastic plate, the plastic plate will move slightly due to the impact force of the cutter, which will reduce the cutting accuracy of the plastic plate. In addition, the existing plastic plate cutting device lacks a positioning device. When cutting, the worker needs to measure the cutting length in advance every time. This method of cutting plastic plates is inefficient and cannot meet the use requirements. Summary of the invention

[0005] In view of this, the present invention provides a plastic plate cutting device with a positioning structure, which has a movably installed pressure rod. After the plastic plate is extended to a certain length, the pressure rod can automatically compact and fix the plastic plate, thereby eliminating the need for manual measurement and ensuring the stability of the plastic plate during cutting, thereby effectively improving the cutting quality.

[0006] The present invention provides a plastic plate cutting device with a positioning structure, specifically comprising: a material cutting mechanism; the material cutting mechanism comprises a main frame, a sliding groove and a gear, a guide roller is rotatably installed at the middle position of the rear side of the main frame, and a cutter connected to a hydraulic press is arranged on the top of the main frame; the sliding groove is provided with two groups, and the sliding grooves are symmetrically arranged on both sides of the main frame; the gear is rotatably installed on both sides of the main frame, and the gear is adjacent to the sliding groove; it is characterized in that a telescopic component is provided on the material cutting mechanism, a push plate of the telescopic component is slidably installed in the slide groove on the inner side of the main frame through a spring, and the front side of the push plate is against the force plate at the outer end of the main frame, and the insertion rod at the outer end of the push plate is inserted into the insertion hole in the force plate; a positioning component is provided on the material cutting mechanism, a lifting frame of the positioning component is arranged at the upper end of the main frame, and the two ends of the lifting frame are slidably connected with the sliding grooves at the two ends of the main frame through elastic members, the inner side of the lifting frame is penetrated by the cutter at the upper end of the main frame, the lower end of the lifting frame is adjacent to the push plate, and the outer end of the lifting frame is connected with the gear transmission of the linkage gear rod B and the outer end of the main frame.

[0007] Furthermore, the material cutting mechanism also includes: a bottom groove and a receiving box; the bottom groove is opened at the bottom end of the front side of the main frame; and the receiving box is inserted into the inner end of the bottom groove.

[0008] Furthermore, the material cutting mechanism includes: side grooves and slide grooves; the side grooves are provided with two groups, and the side grooves are symmetrically opened at the inner ends of both sides of the main frame; the slide groove is opened at the upper end of the front side of the main frame, and the slide groove is connected with the bottom groove.

[0009] Furthermore, the material cutting mechanism includes: a force-bearing plate, a socket and a linkage gear rod A; the force-bearing plate is movably installed on the front outer end of the main frame; the socket is symmetrically opened on both sides of the inside of the force-bearing plate; the linkage gear rod A is provided with two groups, and the linkage gear rod A is symmetrically arranged at the two ends of the rear side of the force-bearing plate, the linkage gear rod A is connected to the gear transmission, and the end of the linkage gear rod A is slidably connected to the side groove through an elastic member.

[0010] Furthermore, the material cutting mechanism also includes: a guide rod and a top wheel; the guide rod is provided with two groups, and the guide rod is movably installed at the two inner ends of the rear side of the main frame through elastic parts; the top wheel is provided with two groups, and the two groups of top wheels are rotatably installed at the front and rear ends of the inner side of the guide rod respectively.

[0011] Furthermore, the telescopic assembly includes: a push plate and an insertion rod; circular leak holes are equidistantly opened inside the push plate; and there are two groups of the insertion rods, which are symmetrically arranged at both ends of the front side of the push plate.

[0012] Furthermore, the telescopic assembly also includes: a top groove and a contact plate; the top groove is provided with two groups, and the top groove is symmetrically arranged at the front upper end of the push plate; the contact plate is arranged at the front upper end of the push plate, and the rectangular protrusions on both sides of the contact plate are respectively engaged with the top grooves.

[0013] Furthermore, the positioning assembly includes: a lifting frame, a connecting groove and a linkage gear rod B; a rectangular through groove is opened in the middle of the lifting frame; there are two groups of connecting grooves, and the two groups of through-type connecting grooves are respectively arranged on both sides of the interior of the lifting frame; there are two groups of linkage gear rods B, and the linkage gear rods B are located at the lower ends of both sides of the lifting frame.

[0014] Furthermore, the positioning assembly also includes: a pressure rod and a positioning port; the pressure rod is located at the inner lower end of the lifting frame, and the bottom of the pressure rod is an annular structure, and the two ends of the pressure rod are slidably connected to the connecting groove; the positioning port is equidistantly opened at the inner ends of both sides of the pressure rod.

[0015] Furthermore, the positioning assembly also includes: an external groove and a movable part; the external groove is arranged on both sides of the outside of the lifting frame, and the external groove is connected with the connecting groove through a rectangular groove; the movable part is installed inside the external groove through a spring, and the end of the movable part is inserted into the positioning port in the pressure rod.

[0016] The present invention provides a plastic plate cutting device with a positioning structure, which has the following beneficial effects:

[0017] 1. The present invention sets a material cutting mechanism and a telescopic component, slides the push plate to the inner side of the main frame, slides the force plate to the inner end of the main frame, and connects the linkage gear rod A on the force plate to the gear transmission connection at the outer end of the main frame, fixes the front side of the push plate to the force plate, and connects the linkage gear rod B on the lifting frame to the gear transmission connection. When the plastic plate pushes the push plate to extend from the front side of the main frame, the lifting frame can drive the pressure rod to move downward until the plastic plate is compacted and fixed. By setting it in this way, the plastic plate can be prevented from shaking during cutting.

[0018] 2. The present invention sets a positioning component, slides and installs a pressure rod on the lifting frame, adjusts the position of the pressure rod on the lifting frame according to the required cutting length of the plastic plate, and fixes it through a movable part. After such setting, every time the plastic plate pushes the push plate to extend a certain length from the front side of the main frame, the pressure plate will be pressed on the position on the plastic plate that needs to be cut, and there is no need for manual intervention and measurement each time, which can effectively improve the efficiency and accuracy of cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments are briefly introduced below. The drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0020] In the attached picture:

[0021] Figure 1 A schematic diagram of a three-dimensional structure according to an embodiment of the present invention is shown.

[0022] Figure 2 The embodiment according to the present invention is shown. Figure 1 The schematic diagram of the enlarged structure of part A is presented.

[0023] Figure 3 A rear view structural schematic diagram according to an embodiment of the present invention is shown.

[0024] Figure 4 A schematic diagram of a decomposed structure according to an embodiment of the present invention is shown.

[0025] Figure 5 A schematic diagram of the connection structure of a material cutting mechanism and a telescopic assembly according to an embodiment of the present invention is shown.

[0026] Figure 6 A schematic diagram of the three-dimensional structure of a material cutting mechanism according to an embodiment of the present invention is shown.

[0027] Figure 7 A schematic diagram of the exploded structure of a material cutting mechanism according to an embodiment of the present invention is shown.

[0028] Figure 8 A partial cross-sectional structural schematic diagram of a positioning assembly according to an embodiment of the present invention is shown.

[0029] Fig. 9 A schematic diagram of the decomposition structure of a positioning component according to an embodiment of the present invention is shown.

[0030] Reference numerals list

[0031] 1. Material cutting mechanism;

[0032] 101, main frame; 1011, sliding slot; 1012, gear;

[0033] 102, bottom slot; 1021, receiving box;

[0034] 103, side groove; 104, slide groove;

[0035] 105, force plate; 1051, socket; 1052, linkage gear rod A;

[0036] 106, guide rod; 1061, top wheel;

[0037] 2. Telescopic components;

[0038] 201, push plate; 2011, insert rod;

[0039] 202, top groove; 203, contact plate;

[0040] 3. Positioning components;

[0041] 301, lifting frame; 3011, connecting groove; 3012, linkage gear rod B;

[0042] 302, pressure rod; 3021, positioning port;

[0043] 303, external slot; 3031, movable part. DETAILED DESCRIPTION

[0044] In order to make the purpose, scheme and advantages of the technical solution of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of specific embodiments of the present invention.

[0045] Example: Please refer to Figures 1 to 9 As shown:

[0046] The present invention provides a plastic plate cutting device with a positioning structure, comprising: a material cutting mechanism 1; the material cutting mechanism 1 comprises a main frame 101, a sliding groove 1011 and a gear 1012, a guide roller is rotatably installed at the middle position of the rear side of the main frame 101, and a cutter connected to a hydraulic press is provided on the top of the main frame 101; there are two groups of sliding grooves 1011, and the sliding grooves 1011 are symmetrically opened on both sides of the main frame 101; the gear 1012 is rotatably installed on both sides of the main frame 101, and the gear 1012 is adjacent to the sliding groove 1011; a telescopic component 2 is provided on the material cutting mechanism 1, and a push plate 201 of the telescopic component 2 is slidably installed in the sliding groove 1 on the inner side of the main frame 101 through a spring 04, and the front side of the push plate 201 is against the force plate 105 at the outer end of the main frame 101, and the insertion rod 2011 at the outer end of the push plate 201 is inserted into the insertion hole 1051 in the force plate 105; a positioning component 3 is provided on the material cutting mechanism 1, and a lifting frame 301 of the positioning component 3 is arranged at the upper end of the main frame 101, and the two ends of the lifting frame 301 are slidably connected with the sliding grooves 1011 at the two ends of the main frame 101 through elastic members, the inner side of the lifting frame 301 is penetrated by the cutting knife at the upper end of the main frame 101, the lower end of the lifting frame 301 is adjacent to the push plate 201, and the outer end of the lifting frame 301 is transmission-connected with the linkage gear rod B3012 and the gear 1012 at the outer end of the main frame 101.

[0047] like Figure 5-7As shown, the cutting mechanism 1 also includes: a bottom groove 102 and a receiving box 1021; the bottom groove 102 is opened at the bottom end of the front side of the main frame 101; the receiving box 1021 is plugged into the inner end of the bottom groove 102; a T-bottom groove 102 is provided, and the receiving box 1021 can be plugged into the bottom of the main frame 101 through the bottom groove 102, and a rectangular receiving box 1021 is provided to receive the debris generated after cutting; side grooves 103 and slide grooves 104; there are two groups of side grooves 103, and the side grooves 103 are symmetrically opened at the inner ends of both sides of the main frame 101; the slide grooves 104 are opened on the front side of the main frame 101 end, and the slide groove 104 is connected with the bottom groove 102; a rectangular side groove 103 is set, and the force plate 105 can be slidably installed to the outside of the main frame 101 through the side groove 103, and a rectangular slide groove 104 is set, and the push plate 201 can be slidably installed to the inside of the main frame 101 through the slide groove 104; the force plate 105, the socket 1051 and the linkage gear rod A1052; the force plate 105 is movably installed at the front outer end of the main frame 101; the socket 1051 is symmetrically opened on both sides of the inside of the force plate 105; there are two groups of linkage gear rods A1052, and the linkage gear rods A1052 are The linkage gear rod A1052 is connected to the gear 1012 at both ends of the rear side of the force-bearing plate 105, and the end of the linkage gear rod A1052 is connected to the side groove 103 through an elastic member; a rectangular force-bearing plate 105 is set, and when the push plate 201 moves forward, the linkage gear rod A1052 can be moved by pushing the force-bearing plate 105, and a circular plug hole 1051 is set, and the push plate 201 can be connected to the force-bearing plate 105 by inserting the plug rod 2011 on the push plate 201 into the plug hole 1051, and the linkage gear rod A1052 is set, and the force-bearing plate 1 When 05 moves, the gear 1012 rotates through the transmission of the linkage gear rod A1052; the guide rod 106 and the top wheel 1061; there are two groups of guide rods 106, and the guide rods 106 are movably installed at the two inner ends of the rear side of the main frame 101 through elastic parts; there are two groups of top wheels 1061, and the two groups of top wheels 1061 are rotatably installed at the front and rear ends of the inner side of the guide rods 106 respectively; the guide rods 106 are provided to guide the plastic plates placed in the main frame 101, and the top wheels 1061 are provided to assist the guide rods 106 in guiding the plastic plates.

[0048] As the first embodiment of the present application, Figure 4-5 As shown, the telescopic component 2 includes: a push plate 201 and an insertion rod 2011; circular leakage holes are equidistantly opened inside the push plate 201; there are two groups of insertion rods 2011, and the insertion rods 2011 are symmetrically arranged at the two ends of the front side of the push plate 201; a top groove 202 and a contact plate 203; there are two groups of top grooves 202, and the top grooves 202 are symmetrically arranged at the upper end of the front side of the push plate 201; the contact plate 203 is arranged at the upper end of the front side of the push plate 201, and the rectangular protrusions on both sides of the contact plate 203 are respectively engaged with the top grooves 202.

[0049] A rectangular push plate 201 is provided so that the pressure rod 302 can press the plastic plate when the push plate 201 moves to a certain position; a cylindrical insertion rod 2011 is provided so that the push plate 201 and the force-bearing plate 105 can be connected and fixed by inserting the insertion rod 2011 into the insertion hole 1051 of the force-bearing plate 105; a rectangular top groove 202 is provided so that the contact plate 203 can be plugged into the top of the push plate 201 through the top groove 202; and the contact plate 203 is provided so that the contact plate 203 can replace the structure between the push plate 201 and the plastic plate, thereby reducing the wear of the push plate 201.

[0050] As a second embodiment of the present application, based on the first embodiment, Figure 8-9 As shown, the positioning assembly 3 includes: a lifting frame 301, a connecting groove 3011 and a linkage gear rod B3012; a rectangular through groove is opened in the middle of the lifting frame 301; there are two groups of connecting grooves 3011, and the two groups of through-type connecting grooves 3011 are respectively arranged on both sides of the inside of the lifting frame 301; there are two groups of linkage gear rods B3012, and the linkage gear rods B3012 are located at the lower ends of both sides of the lifting frame 301; a pressure rod 302 and a positioning port 3021; ​​the pressure rod 302 is located at the inner lower end of the lifting frame 301, and the pressure rod 302 02 has an annular structure at the bottom, and both ends of the pressure rod 302 are slidably connected to the connecting groove 3011; the positioning openings 3021 are equidistantly arranged at the inner ends of both sides of the pressure rod 302; the external groove 303 and the movable part 3031; the external groove 303 is arranged on both sides of the outside of the lifting frame 301, and the external groove 303 is connected with the connecting groove 3011 through a rectangular groove; the movable part 3031 is installed inside the external groove 303 through a spring, and the end of the movable part 3031 is inserted into the positioning opening 3021 in the pressure rod 302.

[0051] A rectangular lifting frame 301 is provided, and a pressure rod 302 can be installed on the lifting frame 301. A rectangular connecting groove 3011 is provided, and the pressure rod 302 can be slidably installed on the lifting frame 301 through the connecting groove 3011. A linkage gear rod B3012 is provided, and the lifting frame 301 can be transmission-connected with the gear 1012 through the linkage gear rod B3012. A U-shaped pressure rod 302 is provided, and the plastic plate can be pressed by the pressure rod 302 to prevent it from shaking during cutting, thereby affecting the cutting accuracy. A rectangular positioning opening 3021 is provided, and the pressure rod 302 can be fixed on the lifting frame 301 by inserting a movable part 3031 into the positioning opening 3021. A rectangular external groove 303 is provided, and the movable part 3031 can be movably installed on both sides of the lifting frame 301 through the external groove 303. A T-shaped movable part 3031 is provided, and the pressure rod 302 can be fixed on the lifting frame 301 by inserting the end of the movable part 3031 into the positioning opening 3021.

[0052] The specific usage and function of this embodiment are as follows:

[0053] In the present invention, Figure 1-9 As shown, the push plate 201 is slidably installed in the slide groove 104 in the main frame 101, and then the contact plate 203 is inserted into the upper end of the push plate 201 through the top groove 202, and the force-bearing plate 105 is slidably installed to the front side of the main frame 101, and the insertion rod 2011 on the front side of the push plate 201 is inserted into the insertion hole 1051 in the force-bearing plate 105, and the guide rod 106 is movably installed on the inner rear side of the main frame 101, and the plastic plate is pushed into the main frame 101 from the rear side, and the guide rods 106 on both sides are against the two sides of the plastic plate, so as to correct the position of the plastic plate, and the lifting frame 301 is slidably installed above the main frame 101, and the installation position of the pressure rod 302 on the lifting frame 301 is adjusted according to the cutting size of the plastic plate. After the adjustment, the ends of the movable parts 3031 on both sides of the lifting frame 301 are inserted into the positioning holes 3031 of the pressure rod 302. 21, the pressure rod 302 and the lifting frame 301 are fixed as a whole, pushing the plastic plate so that the front end of the plastic plate is against the contact plate 203, and then continuing to push the plastic plate, the front side of the plastic plate is pushed out of the main frame 101 together with the push plate 201, and the force plate 105 moves forward with the push plate 201. At this time, through the transmission action of the gear 1012, the linkage gear rod B3012 moves the lifting frame 301 and the pressure rod 302 downward. After moving to a certain distance, the pressure rod 302 presses on the plastic plate and prevents it from moving forward. At this time, the cutting machine can be used to drive the cutting machine to descend, and the plastic plate can be cut through the annular structure at the bottom of the pressure rod 302. The debris generated during cutting can fall into the receiving box 1021 at the bottom of the main frame 101 through the leakage hole in the push plate 201, thus completing a single cutting of the plastic plate.

Claims

1. A plastic plate cutting device with a positioning structure, comprising: A material cutting mechanism (1); the material cutting mechanism (1) comprises a main frame (101), a sliding groove (1011) and a gear (1012); a guide roller is rotatably installed at the middle position of the rear side of the main frame (101), and a cutter connected to a hydraulic press is provided at the top of the main frame (101); the sliding groove (1011) is provided with two groups, and the sliding grooves (1011) are symmetrically opened on both sides of the main frame (101); the gear (1012) is rotatably installed on both sides of the main frame (101), and the gear (1012) is adjacent to the sliding groove (1011); it is characterized in that a telescopic component (2) is provided on the material cutting mechanism (1), and a push plate (201) of the telescopic component (2) is slidably installed in the sliding groove (104) on the inner side of the main frame (101) through a spring, and the push plate (2 01) is pressed against the force plate (105) at the outer end of the main frame (101) by the front side, and the insertion rod (2011) at the outer end of the push plate (201) is inserted into the insertion hole (1051) in the force plate (105); the material cutting mechanism (1) is provided with a positioning assembly (3), the lifting frame (301) of the positioning assembly (3) is arranged at the upper end of the main frame (101), and the two ends of the lifting frame (301) are slidably connected with the sliding grooves (1011) at the two ends of the main frame (101) through elastic members, the inner side of the lifting frame (301) is penetrated by the cutting knife at the upper end of the main frame (101), the lower end of the lifting frame (301) is adjacent to the push plate (201), and the outer end of the lifting frame (301) is transmission-connected with the linkage gear rod B (3012) and the gear (1012) at the outer end of the main frame (101).

2. The plastic plate cutting device with a positioning structure according to claim 1, characterized in that: The material cutting mechanism (1) further comprises: a bottom groove (102) and a receiving box (1021); the bottom groove (102) is arranged at the bottom end of the front side of the main frame (101); and the receiving box (1021) is plugged into the inner end of the bottom groove (102).

3. The plastic plate cutting device with a positioning structure according to claim 2, characterized in that: The material cutting mechanism (1) comprises: side grooves (103) and sliding grooves (104); the side grooves (103) are provided with two groups, and the side grooves (103) are symmetrically opened at the inner ends of both sides of the main frame (101); the sliding groove (104) is opened at the upper end of the front side of the main frame (101), and the sliding groove (104) is connected to the bottom groove (102).

4. The plastic plate cutting device with a positioning structure according to claim 3, characterized in that: The material cutting mechanism (1) comprises: a force-bearing plate (105), a socket (1051) and a linkage gear rod A (1052); the force-bearing plate (105) is movably mounted on the front outer end of the main frame (101); the socket (1051) is symmetrically arranged on both sides of the inside of the force-bearing plate (105); two groups of linkage gear rods A (1052) are provided, and the linkage gear rods A (1052) are symmetrically arranged on both ends of the rear side of the force-bearing plate (105); the linkage gear rods A (1052) are transmission-connected to the gear (1012), and the ends of the linkage gear rods A (1052) are slidingly connected to the side grooves (103) through elastic members.

5. The plastic plate cutting device with a positioning structure according to claim 1, characterized in that: The material cutting mechanism (1) further comprises: a guide rod (106) and a top wheel (1061); the guide rod (106) is provided with two groups, and the guide rod (106) is movably mounted at both ends inside the rear side of the main frame (101) through elastic members; the top wheel (1061) is provided with two groups, and the two groups of top wheels (1061) are rotatably mounted at the front and rear ends inside the guide rod (106) respectively.

6. The plastic plate cutting device with a positioning structure according to claim 1, characterized in that: The telescopic assembly (2) comprises: a push plate (201) and an insertion rod (2011); circular leak holes are equidistantly provided inside the push plate (201); and two groups of the insertion rods (2011) are provided, and the insertion rods (2011) are symmetrically arranged at both ends of the front side of the push plate (201).

7. The plastic plate cutting device with a positioning structure according to claim 6, characterized in that: The telescopic assembly (2) further comprises: a top groove (202) and a contact plate (203); the top groove (202) is provided with two groups, and the top groove (202) is symmetrically arranged at the front upper end of the push plate (201); the contact plate (203) is arranged at the front upper end of the push plate (201), and the rectangular protrusions on both sides of the contact plate (203) are respectively engaged with the top groove (202).

8. The plastic plate cutting device with a positioning structure according to claim 1, characterized in that: The positioning assembly (3) comprises: a lifting frame (301), a connecting groove (3011) and a linkage gear rod B (3012); a rectangular through groove is provided in the middle of the lifting frame (301); two groups of the connecting grooves (3011) are provided, and the two groups of through-type connecting grooves (3011) are respectively provided on both sides of the interior of the lifting frame (301); two groups of the linkage gear rods B (3012) are provided, and the linkage gear rods B (3012) are located at the lower ends of both sides of the lifting frame (301).

9. The plastic plate cutting device with a positioning structure according to claim 8, characterized in that: The positioning assembly (3) further comprises: a pressure rod (302) and a positioning opening (3021); the pressure rod (302) is located at the inner lower end of the lifting frame (301), and the bottom of the pressure rod (302) is an annular structure, and both ends of the pressure rod (302) are slidably connected to the connecting groove (3011); the positioning opening (3021) is equidistantly arranged at the inner ends of both sides of the pressure rod (302).

10. The plastic plate cutting device with a positioning structure according to claim 9, characterized in that: The positioning assembly (3) further comprises: an external groove (303) and a movable part (3031); the external groove (303) is arranged on both sides of the outside of the lifting frame (301), and the external groove (303) is connected to the connecting groove (3011) through a rectangular groove; the movable part (3031) is installed inside the external groove (303) through a spring, and the end of the movable part (3031) is inserted into the positioning opening (3021) in the pressure rod (302).

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