Convenient-to-mount cutter for plastic crusher

Abstract

The utility model discloses a plastic crusher cutter convenient to install, which relates to the technical field of plastic crusher cutter installation and comprises a crushing box, a rotating shaft is rotatably installed on the inner wall of the crushing box, a fixing seat is welded on the rotating shaft, cutter holders are fixedly installed on two sides of the fixing seat, and the cutter holders are fixedly installed on the inner wall of the crushing box. A mounting groove is formed in the side wall, far away from the fixed seat, of the cutter holder, a limiting gear is movably mounted in the mounting groove, a crushing cutter is mounted in the mounting groove in a matched manner, and a rack part matched with the limiting gear is arranged on the crushing cutter. According to the design scheme, through the design that the limiting gear is movably mounted in the cutter holder, the rack part of the crushing cutter is inserted into the mounting groove, the limiting gear is rotated, the rack part slides into the mounting groove under the action of the limiting gear, and the crushing cutter is fixed through cooperation of the limiting gear and the rack part; and therefore, the crushing cutter does not need to be fixed by using a bolt when being mounted, and the mounting process of the crushing cutter becomes simple and rapid.

Description

Technical Field

[0001] The utility model relates to the technical field of installation of cutter blades for plastic crushers, in particular to a cutter blade for plastic crushers which is easy to install. Background Art

[0002] Plastic crusher is used to crush waste plastics and factory plastic scraps. Plastic crusher is widely used in waste plastic regeneration and recycling of factory scraps. Plastic crusher drives the moving knife disc to rotate at high speed through an electric motor. During the high-speed rotation of the moving knife, it forms a relative motion with the fixed knife. The gap between the moving knife and the fixed knife is used to create a plastic crushing and shearing incision, thereby crushing large pieces of plastic. The crushed plastic is filtered and output according to the size of the plastic particles through a screen.

[0003] When installing a cutter on an existing plastic crusher, the cutter is usually placed close to the installation position of the plastic crusher, and then the bolts on both sides of the cutter are tightened first, and then the user tightens the bolts in sequence. During the installation process, it is difficult to find a fixing hole for the bolt, and the worker needs to adjust the cutter angle many times. The installation process is relatively cumbersome, and the crushing cutter of the plastic crusher is usually large. The cutter is prone to fall and injure people while the worker is looking for a fixing hole, which is inconvenient for users.

[0004] CN 219486272 U discloses a tool for a plastic crusher which is easy to install, comprising a processing box, the inner wall of which is rotatably connected to a rotating shaft, a mounting frame bolted to the surface of the rotating shaft, a crushing mechanism bolted to the inner wall of the mounting frame, and a movable block movably connected to the top of the crushing mechanism.

[0005] When installing the above-mentioned tool, the fixing plate is inserted into the inner wall of the fixing frame. When the fixing plate enters the inside of the fixing frame, the blocking block will initially fix the position of the fixing plate to prevent the crushing knife from falling when installing the crushing knife. Then the bolts are rotated inside the fixing frame and the fixing plate so that the bolts fix the position of the fixing plate to prevent the crushing knife from shaking randomly during use, which is convenient for users to use. However, the above-mentioned tool still needs to be fixed in the position of the fixing plate with bolts, which makes the installation process of the tool still relatively cumbersome. Utility Model Content

[0006] In order to overcome the above-mentioned defects in the prior art, the utility model provides a cutter for a plastic crusher which is easy to install.

[0007] The technical solution adopted by the utility model to solve the technical problem is: a tool for a plastic crusher that is easy to install, comprising a crushing box, a rotating shaft is rotatably installed on the inner wall of the crushing box, a fixing seat is welded on the rotating shaft, a knife seat is fixedly installed on both sides of the fixing seat, a mounting groove is opened on the side wall of the knife seat away from the fixing seat, a limit gear is movably installed in the mounting groove, a crushing knife is matched and installed in the mounting groove, and the crushing knife is provided with a rack part that matches the limit gear.

[0008] Furthermore, a groove is provided at the top of the mounting groove, a connecting rod is movably installed in the groove, a limit gear is fixedly installed on the connecting rod, a screw portion is provided at one end of the connecting rod, a threaded hole corresponding to the screw portion is opened on the side wall of the groove, a screwing portion is provided at the end of the connecting rod away from the screw portion, and the screwing portion is cooperated with the side wall of the mounting fixing seat.

[0009] Furthermore, a first spring is fitted in the threaded hole, and the first spring abuts against the screw rod.

[0010] Furthermore, a screwing portion is provided at one end of the connecting rod away from the screw rod portion, and the screwing portion is mounted on the side wall of the fixing seat in cooperation, and a hexagonal groove is provided on the end surface of the screwing portion.

[0011] Furthermore, a plurality of groups of second springs are fixedly installed in the installation groove, and push plates are fixedly installed at the ends of the plurality of groups of second springs. The rack part is inserted in the installation groove, the rack part is meshed with the limit gear, and the end face of the rack part abuts against the push plate.

[0012] The beneficial effect of the utility model is that the design of the utility model adopts the design of movably installing a limiting gear in the knife seat. When installing the crushing knife, the rack part of the crushing knife is inserted into the installation groove, and the limiting gear is rotated to make the rack part slide into the installation groove under the action of the limiting gear. After the crushing knife is installed on the knife seat, the crushing knife is fixed by the cooperation of the limiting gear and the rack part, so that the crushing knife does not need to be fixed with bolts during installation, thereby making the installation process of the crushing knife simple and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0014] Figure 1 The three-dimensional structure of the utility model is shown in FIG. Figure 1 ;

[0015] Figure 2 The three-dimensional structure of the utility model is shown in FIG. Figure 2 ;

[0016] Figure 3This is a schematic diagram of the internal structure of the knife holder of the utility model;

[0017] Figure 4 for Figure 3 A partial enlarged view of the middle B area;

[0018] Figure 5 for Figure 3 Schematic diagram of the cross-sectional structure in the AA direction;

[0019] Figure 6 It is a structural schematic diagram of the crushing knife of the utility model.

[0020] In the figure: 1. crushing box, 2. rotating shaft, 3. fixing seat, 4. knife seat, 41. mounting groove, 42. groove, 43. threaded hole, 5. first spring, 6. second spring, 7. push plate, 8. crushing knife, 81. rack part, 9. connecting rod, 91. screw part, 92. screwing part, 93. hexagonal groove, 10. limit gear. DETAILED DESCRIPTION

[0021] In order to more clearly illustrate the technical solution of the utility model, the utility model is further described below in conjunction with the accompanying drawings. Obviously, the accompanying drawings described below are only one embodiment of the utility model. For ordinary technicians in this field, without paying any creative work, other embodiments can be obtained based on this drawing and embodiment, which all belong to the protection scope of the utility model.

[0022] according to Figure 1-6 As shown, a tool for a plastic crusher that is easy to install includes a crushing box 1, a rotating shaft 2 is rotatably installed on the inner wall of the crushing box 1, a fixing seat 3 is welded on the rotating shaft 2, a knife seat 4 is fixedly installed on both sides of the fixing seat 3 by bolts, a mounting groove 41 is opened on the side wall of the knife seat 4 away from the fixing seat 3, a limit gear 10 is movably installed in the mounting groove 41, a crushing knife 8 is matched and installed in the mounting groove 41, and the crushing knife 8 is provided with a rack part 81 that matches the limit gear 10.

[0023] In this embodiment, a groove 42 is provided at the top of the mounting groove 41, and a connecting rod 9 is movably installed in the groove 42. A limit gear 10 is fixedly installed on the connecting rod 9 by a key. A screw portion 91 is provided at one end of the connecting rod 9, and a threaded hole 43 corresponding to the screw portion 91 is opened on the side wall of the groove 42. A screwing portion 92 is provided at the end of the connecting rod 9 away from the screw portion 91. The screwing portion 92 is cooperated with the side wall of the mounting fixing seat 3. The screw portion 91 is screwed into the threaded hole 43 by rotating the connecting rod 9, and the self-locking of the connecting rod 9 is realized by the thread. When the connecting rod 9 rotates, it will drive the limit gear 10 to rotate.

[0024] In this embodiment, a first spring 5 is installed in the threaded hole 43 , and the first spring 5 abuts against the screw portion 91 . The first spring 5 eliminates the matching clearance between the screw portion 91 and the threaded hole 43 , thereby preventing the screw portion 91 and the threaded hole 43 from loosening.

[0025] In this embodiment, a screwing portion 92 is provided at one end of the connecting rod 9 away from the screw portion 91. The screwing portion 92 is mounted on the side wall of the fixing seat 3. A hexagonal groove 93 is provided on the end face of the screwing portion 92. The staff can easily rotate the connecting rod 9 by matching the hexagonal wrench with the screwing portion 92.

[0026] In this embodiment, a plurality of groups of second springs 6 are fixedly installed in the mounting groove 41, and push plates 7 are fixedly installed at the ends of the plurality of groups of second springs 6. The rack portion 81 is inserted in the mounting groove 41, the rack portion 81 is meshed with the limiting gear 10, and the end surface of the rack portion 81 is in contact with the push plate 7. When the crushing knife 8 is installed on the fixed seat 3, the second spring 6 is in a compressed state. Under the action of the second spring 6, the installation of the crushing knife 8 on the knife seat 4 is more stable.

[0027] When the utility model is in use, when installing the crushing knife 8, the staff first uses the hexagonal wrench to rotate the connecting rod 9 to screw the screw part 91 out of the threaded hole 43, and then inserts the rack part 81 of the crushing knife 8 into the installation groove 41, and then rotates the connecting rod 9 to screw the screw part 91 into the threaded hole 43 again. At this time, under the action of the limiting gear 10, the rack part 81 slides into the installation groove 41 and abuts against the push plate 7, and then the connecting rod 9 is tightened to complete the installation of the crushing knife 8. When the crushing knife 8 is installed on the knife seat 4, the crushing knife 8 is fixed by the cooperation of the limiting gear 10 and the rack part 81, so that the crushing knife 8 does not need to be fixed with bolts during installation, thereby making the installation process of the crushing knife simple and quick.

[0028] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

Claims

1. A tool for a plastic crusher that is easy to install, comprising a crushing box (1), wherein a rotating shaft (2) is rotatably mounted on the inner wall of the crushing box (1), characterized in that: A fixing seat (3) is welded on the rotating shaft (2), and a knife seat (4) is fixedly installed on both sides of the fixing seat (3). A mounting groove (41) is provided on the side wall of the knife seat (4) away from the fixing seat (3), and a limit gear (10) is movably installed in the mounting groove (41). A crushing knife (8) is matched and installed in the mounting groove (41), and the crushing knife (8) is provided with a rack part (81) matched with the limit gear (10).

2. A plastic crusher cutter that is easy to install according to claim 1, characterized in that: A groove (42) is provided at the top of the installation groove (41), a connecting rod (9) is movably installed in the groove (42), a limit gear (10) is fixedly installed on the connecting rod (9), a screw portion (91) is provided at one end of the connecting rod (9), a threaded hole (43) corresponding to the screw portion (91) is opened on the side wall of the groove (42), and a screwing portion (92) is provided at one end of the connecting rod (9) away from the screw portion (91), and the screwing portion (92) is mounted on the side wall of the fixing seat (3).

3. A plastic crusher cutter that is easy to install according to claim 2, characterized in that: A first spring (5) is fitted in the threaded hole (43), and the first spring (5) abuts against the screw rod portion (91).

4. A plastic crusher cutter that is easy to install according to claim 2, characterized in that: A screwing portion (92) is provided at one end of the connecting rod (9) away from the screw rod portion (91), and the screwing portion (92) is mounted on the side wall of the fixing seat (3). A hexagonal groove (93) is provided on the end surface of the screwing portion (92).

5. A plastic crusher cutter that is easy to install according to claim 2, characterized in that: A plurality of groups of second springs (6) are fixedly installed in the installation groove (41), and push plates (7) are fixedly installed at the ends of the plurality of groups of second springs (6). The rack portion (81) is inserted into the installation groove (41), the rack portion (81) is meshed with the limit gear (10), and the end surface of the rack portion (81) is in contact with the push plate (7).

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