Cutting device used after plastic mold forming

By using a bidirectional motor-driven cutting blade movement and knob clamping system, the accuracy and efficiency issues of the cutting device after plastic mold forming are solved, achieving high-precision and stable cutting results.

CN224129862UActive Publication Date: 2026-04-17SUZHOU TONGJIU PRECISION MFG CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SUZHOU TONGJIU PRECISION MFG CO LTD
Filing Date
2025-04-01
Publication Date
2026-04-17

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Abstract

The utility model relates to the technical field of plastic mold post-forming processing, and discloses a plastic mold post-forming cutting device which comprises a base, a sliding frame is connected to the inner wall of the base in a sliding mode, a bidirectional motor is fixedly connected to the inner wall of the sliding frame, and the driving end of one side of the bidirectional motor is connected with the base through a movable assembly. The driving end of the other side of the bidirectional motor is connected with a connecting plate through a moving assembly so as to drive the cutting knife to move front and back, hydraulic rods are fixedly connected to the front side and the rear side of the bottom end of the connecting plate, the cutting knife is fixedly connected to the bottom ends of the hydraulic rods, and a rotary knob is rotationally connected to the inner wall of the base. According to the cutting device, the bidirectional motor drives the cutting knife to move left and right and back and forth, the cutting knife is accurately moved to the required cutting position, errors caused by human factors can be effectively reduced, and therefore the cutting precision and the production efficiency are improved.
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Description

Technical Field

[0001] This utility model relates to the field of post-molding processing technology of plastic molds, and in particular to a cutting device for plastic molds after molding. Background Technology

[0002] During the plastic molding process, due to various factors, the dimensions of the molded plastic products may have certain deviations. The cutting device can accurately cut the plastic parts according to the design requirements to achieve the specified dimensional accuracy and ensure that the products meet the quality standards.

[0003] In existing technologies, workers usually need to manually adjust the cutting position, which makes it difficult to ensure that the accuracy of each adjustment is consistent, and the accuracy and repeatability of the cutting position cannot be guaranteed. Secondly, the speed is obviously slow, which will prolong the time of the entire cutting operation and reduce production efficiency.

[0004] In response to the technical problem of difficulty in ensuring consistent accuracy in each adjustment, this application proposes a cutting device after plastic mold forming. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies that make it difficult to guarantee consistent accuracy in each adjustment. The proposed device is a cutting device for plastic molds after molding. It uses a bidirectional motor to drive the cutting blade to move left and right and forward and backward, accurately moving the blade to the desired cutting position. This effectively reduces errors caused by human factors, thereby improving cutting accuracy and production efficiency.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A cutting device for plastic molds after molding includes a base. A sliding frame is slidably connected to the inner wall of the base. A bidirectional motor is fixedly connected to the inner wall of the sliding frame. One drive end of the bidirectional motor is connected to the base via a movable component to drive the cutting blade to move left and right. The other drive end of the bidirectional motor is connected to a connecting plate via a movable component to drive the cutting blade to move back and forth. Hydraulic rods are fixedly connected to both the front and rear sides of the bottom end of the connecting plate. The cutting blade is fixedly connected to the bottom end of the hydraulic rods. A knob is rotatably connected to the inner wall of the base. The rear end of the knob is connected to a clamping plate via a clamping component to drive the clamping plates on both sides to move. The outer walls of the clamping plates are slidably connected to both sides of the inner wall of the base.

[0008] Furthermore, the active component includes a gear one fixedly connected to the rear drive end of the bidirectional motor, a toothed plate one meshing with the outer wall of the gear one, and the outer wall of the toothed plate one fixedly connected to the inner wall of the base.

[0009] Furthermore, the moving component includes a toothed plate II slidably connected to the inner wall of the sliding frame, and a plurality of gears II meshing with the outer wall of the toothed plate II, the top ends of which are rotatably connected to the inner wall of the sliding frame.

[0010] Furthermore, the front drive end of the bidirectional motor is fixedly connected to multiple gear sets, and the top of each gear set is fixedly connected to the bottom end of the second gear.

[0011] Furthermore, the clamping assembly includes a worm gear fixedly connected to the rear end of the knob, a worm wheel meshing with the outer wall of the worm gear, a rotating rod fixedly connected to the inner wall of the worm wheel, and the outer wall of the rotating rod rotatably connected to the inner wall of the base.

[0012] Furthermore, main connecting rods are fixedly connected to both sides of the outer wall of the rotating rod, and secondary connecting rods are rotatably connected to the top of each main connecting rod. The top of each secondary connecting rod is rotatably connected to the bottom of the clamping plate.

[0013] Furthermore, rubber pads are fixedly connected to the outer walls of the clamping plates, and the outer walls of the rubber pads are fixedly connected to both sides of the inner wall of the base.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, the cutting blade is moved left and right and back and forth by a bidirectional motor, which accurately moves the cutting blade to the required cutting position. This can effectively reduce errors caused by human factors, thereby improving cutting accuracy and production efficiency.

[0016] 2. In this utility model, by rotating the knob, products of different sizes can be clamped and fixed, ensuring that the products will not shift or shake during the cutting process, so that the cutting blade can accurately cut according to the preset path, thereby ensuring the accuracy of the cutting size. Attached Figure Description

[0017] Figure 1 This is a perspective view of a cutting device for plastic molds after forming, as proposed in this utility model;

[0018] Figure 2 This is a right-side sectional view of the base of a cutting device for plastic mold forming according to the present invention;

[0019] Figure 3 This is a front sectional view of the base of a cutting device for plastic mold forming according to the present invention;

[0020] Figure 4 This is a diagram of the clamping plate structure of a cutting device for plastic mold forming according to the present invention;

[0021] Figure 5This is a left-side sectional view of the base of a cutting device for plastic mold forming according to the present invention;

[0022] Figure 6 This is a sectional view of the upper side of the sliding frame of a cutting device for plastic mold forming according to the present invention;

[0023] Figure 7 This is a structural diagram of the connecting plate of a cutting device after plastic mold forming, as proposed in this utility model.

[0024] Legend:

[0025] 1. Base; 2. Sliding frame; 3. Bidirectional motor; 4. Gear 1; 5. Gear plate 1; 6. Gear set; 7. Gear 2; 8. Gear plate 2; 9. Connecting plate; 10. Hydraulic rod; 11. Cutting blade; 12. Knob; 13. Worm gear; 14. Worm wheel; 15. Rotating rod; 16. Main connecting rod; 17. Secondary connecting rod; 18. Clamping plate; 19. Rubber pad. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Reference Figures 5-7 As shown, one embodiment of this utility model provides a cutting device after plastic mold forming, including a base 1, a sliding frame 2 slidably connected to the inner wall of the base 1, a bidirectional motor 3 fixedly connected to the inner wall of the sliding frame 2, a connecting plate 9 provided on the other driving end of the bidirectional motor 3, hydraulic rods 10 fixedly connected to both the front and rear sides of the bottom end of the connecting plate 9, a cutting blade 11 fixedly connected to the bottom end of the hydraulic rods 10, a gear 4 fixedly connected to the rear driving end of the bidirectional motor 3, a toothed plate 5 meshing with the outer wall of the gear 4, the outer wall of the toothed plate 5 fixedly connected to the inner wall of the base 1 for driving the cutting blade 11 to move left and right, a toothed plate 8 slidably connected to the inner wall of the sliding frame 2, multiple gears 7 meshing with the outer wall of the toothed plate 8, the top ends of the gears 7 rotatably connected to the inner wall of the sliding frame 2, and multiple gear sets 6 fixedly connected to the front driving end of the bidirectional motor 3, the top ends of the gear sets 6 fixedly connected to the bottom end of the gears 7 for driving the cutting blade 11 to move back and forth.

[0028] For details, please refer to Figure 3A controller is installed at the front end of the base 1. The controller is electrically connected to the bidirectional motor 3 and the hydraulic rod 10. Next, the gear set 6 is a combination of two bevel gears to drive the second gear 7 to rotate synchronously in the same direction. The length of the second gear plate 8 is greater than the distance between the two second gears 7. The bidirectional motor drives the cutting blade 11 to move left and right and back and forth, accurately moving the cutting blade 11 to the required cutting position. This can effectively reduce errors caused by human factors, thereby improving cutting accuracy and production efficiency.

[0029] Reference Figure 1 , Figure 2 and Figure 4 As shown, a knob 12 is rotatably connected to the inner wall of the base 1. A clamping plate 18 is provided at the rear end of the knob 12 to drive the clamping plates 18 on both sides to move. The outer walls of the clamping plates 18 are slidably connected to both sides of the inner wall of the base 1. A worm gear 13 is fixedly connected to the rear end of the knob 12. A worm wheel 14 is meshed with the outer wall of the worm gear 13. A rotating rod 15 is fixedly connected to the inner wall of the worm wheel 14. The outer wall of the rotating rod 15 is rotatably connected to the inner wall of the base 1. A main connecting rod 16 is fixedly connected to both sides of the outer wall of the rotating rod 15. A secondary connecting rod 17 is rotatably connected to the top of the main connecting rod 16. The top of the secondary connecting rod 17 is rotatably connected to the bottom of the clamping plate 18. A rubber pad 19 is fixedly connected to the outer wall of the clamping plate 18. The outer walls of the rubber pad 19 are fixedly connected to both sides of the inner wall of the base 1.

[0030] Specifically, during cutting, the rubber pad 19 prevents debris from falling into the base 1 through the grooves on both sides, thus avoiding affecting the internal structure. By rotating the knob 12, products of different sizes can be clamped and fixed, ensuring that the products do not shift or shake during the cutting process, so that the cutting blade 11 can accurately cut along the preset path, thereby ensuring the accuracy of the cutting dimensions.

[0031] Working principle: First, place the product in the base 1, on both sides of the clamping plate 18. Then rotate the knob 12. The knob 12 drives the worm gear 13 to rotate, the worm gear 13 drives the worm wheel 14 to rotate, the worm wheel 14 drives the rotating rod 15 to rotate, the rotating rod 15 drives the main connecting rods 16 on both sides to rotate, and drives the auxiliary connecting rod 17 at the top to rotate, and drives the clamping plates 18 on both sides to slide towards the middle to clamp the product. Next, start the two drive ends of the bidirectional motor 3 through the controller. The rear drive end drives the gear 4 to rotate, so that the gear 4 rotates on the outer wall of the toothed plate 5, and drives the sliding frame 2 and the cutting blade 11 to move left and right. The front drive end drives the gear set 6 to rotate, the gear set 6 drives the gear 7 at the top to rotate, and the gear 7 drives the toothed plate 8, the connecting plate 9 and the cutting blade 11 to move back and forth to adjust the position of the cutting blade 11. After the adjustment is completed, start the hydraulic rod 10. The hydraulic rod 10 drives the cutting blade 11 to move downward to cut the product.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cutting device for plastic molds after molding, characterized in that, The device includes a base (1), a sliding frame (2) slidably connected to the inner wall of the base (1), a bidirectional motor (3) fixedly connected to the inner wall of the sliding frame (2), one drive end of the bidirectional motor (3) being connected to the base (1) via a movable component to drive the cutting blade (11) to move left and right, and the other drive end of the bidirectional motor (3) being connected to a connecting plate (9) via a movable component to drive the cutting blade (11) to move back and forth, and hydraulic rods (10) fixedly connected to the front and rear sides of the bottom end of the connecting plate (9), and the cutting blade (11) fixedly connected to the bottom end of the hydraulic rods (10), and a knob (12) rotatably connected to the inner wall of the base (1), and a clamping plate (18) connected to the rear end of the knob (12) via a clamping component to drive the clamping plates (18) on both sides to move, and the outer walls of the clamping plates (18) being slidably connected to both sides of the inner wall of the base (1).

2. A post-mold cutting apparatus for plastic molds according to claim 1, characterized in that: The active component includes a gear (4) fixedly connected to the rear drive end of the bidirectional motor (3), and a toothed plate (5) meshing with the outer wall of the gear (4). The outer wall of the toothed plate (5) is fixedly connected to the inner wall of the base (1).

3. A post-mold cutting apparatus for plastic molds according to claim 1, characterized in that: The moving component includes a toothed plate (8) slidably connected to the inner wall of the sliding frame (2), and a plurality of gears (7) meshing with the outer wall of the toothed plate (8), the top ends of the gears (7) being rotatably connected to the inner wall of the sliding frame (2).

4. A post-mold cutting apparatus for plastic molds according to claim 3, characterized in that: The bidirectional motor (3) has multiple gear sets (6) fixedly connected to its front drive end, and the top of each gear set (6) is fixedly connected to the bottom of gear two (7).

5. A post-mold cutting apparatus for plastic molds according to claim 1, characterized in that: The clamping assembly includes a worm gear (13) fixedly connected to the rear end of the knob (12), a worm wheel (14) meshing with the outer wall of the worm gear (13), a rotating rod (15) fixedly connected to the inner wall of the worm wheel (14), and the outer wall of the rotating rod (15) rotatably connected to the inner wall of the base (1).

6. A post-mold trim and cut apparatus for plastic molds as defined in claim 5, wherein: Both sides of the outer wall of the rotating rod (15) are fixedly connected to the main connecting rod (16), and the top of the main connecting rod (16) is rotatably connected to the auxiliary connecting rod (17), and the top of the auxiliary connecting rod (17) is rotatably connected to the bottom of the clamping plate (18).

7. A post-mold trim and cut apparatus for plastic molds as defined in claim 5, wherein: Each of the clamps (18) has a rubber pad (19) fixedly connected to its outer wall, and the outer walls of the rubber pads (19) are fixedly connected to both sides of the inner wall of the base (1).