Edge cutting device of blow molding machine

Abstract

The utility model relates to the technical field of plastic production and processing, and discloses an edge cutting device of a blow molding machine. The edge cutting device of the blow molding machine comprises a workbench, a first connecting frame, a servo motor, a transmission rod, a first gear, a first supporting frame and a first idler wheel, the first connecting frame is fixedly connected to the workbench, the servo motor is installed on the first connecting frame, the transmission rod is connected to an output shaft of the servo motor, and the first gear is installed on the transmission rod. A first gear is connected to the lower end of the transmission rod, two first supporting frames are fixedly connected to the workbench, and first rolling wheels are rotationally arranged on the first supporting frames. The output shaft of the servo motor rotates to drive the second gear to rotate, then the blow molding product rotates, at the moment, the cutting knife makes contact with the surface of the blow molding product, redundant flashes on the surface of the blow molding product are cut, manual cutting is replaced, the purpose of automatic cutting is achieved, and then the cutting efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic production and processing, and discloses a trimming device for a blow molding machine. Background Art

[0002] Blow molding, also known as hollow blow molding, is a rapidly developing plastic processing method. During World War II, the blow molding process began to be used to produce low-density polyethylene bottles. Plastics suitable for blow molding include polyethylene, polyvinyl chloride, polypropylene, polyester, etc., making hollow containers widely used as industrial packaging containers. According to the method of making the parison, blow molding can be divided into extrusion blow molding and injection blow molding. Newly developed ones include multi-layer blow molding and stretch blow molding.

[0003] In real life, during blow molding, due to mold expansion, insufficient clamping pressure, mold edge wear, parison deflection during blowing and other problems, it is easy to cause flash on the product. The existing blow molding product flash removal is usually performed manually. The manual removal process is cumbersome, time-consuming and labor-intensive, which not only increases the workload of the staff, but also has low efficiency.

[0004] Therefore, a blow molding machine trimming device with automatic trimming is needed. Utility Model Content

[0005] In order to overcome the shortcomings that the flash cutting of existing blow molding products is usually performed manually, the manual cutting process is cumbersome, time-consuming and labor-intensive, which not only increases the workload of the staff but also has low efficiency, the utility model provides an automatic cutting blow molding machine trimming device.

[0006] To achieve the purpose of automatic cutting, the utility model provides the following technical solutions: a trimming device for a blow molding machine, comprising a workbench, a first connecting frame, a servo motor, a transmission rod, a first gear, a second gear, a first roller, a second roller, a first support frame, a T-shaped rod, a guide frame, a cutting knife and a second support frame, the first connecting frame is fixedly connected to the workbench, the servo motor is installed on the first connecting frame, the transmission rod is connected to the output shaft of the servo motor, the lower end of the transmission rod is connected to the first gear, two first support frames are fixedly connected to the workbench, the first support frame is rotatably provided with a first roller, the top of the first roller on the right side is provided with a second gear, the second gear is meshed with the first gear, the second support frame is fixedly connected to the workbench, the second support frame is provided with a cutting knife, the first connecting frame is fixedly connected with a guide frame, the guide frame is slidably provided with a T-shaped rod, and the lower end of the T-shaped rod is connected to the second roller.

[0007] Optionally, it also includes a baffle plate, a hinge, a torsion spring and a loading box. The loading box is slidably arranged inside the workbench, the loading box is installed with a hinge, the baffle plate is rotatably arranged on the hinge, and two torsion springs are sleeved on the hinge.

[0008] Optionally, it also includes a mounting frame, a cylinder and a push plate. The mounting frame is fixedly connected to the workbench, the cylinder is installed on the mounting frame, and the push plate is connected to the telescopic rod of the cylinder.

[0009] Optionally, the contact surface between the push plate and the blow-molded product is a curved surface.

[0010] Optionally, it also includes an air pump, an air guide pipe, a third support frame, a fourth support frame, a second connecting frame and an air guide seat. The air pump is installed on the workbench, the third support frame is fixedly connected to the workbench, the fourth support frame is fixedly connected to the workbench, the third support frame, the fourth support frame and the air pump are jointly provided with an air guide pipe, the air guide pipe is provided with a second connecting frame, the second connecting frame is fixedly connected to the air guide seat, and one end of the air guide pipe is connected to the air guide seat.

[0011] Optionally, the cutting knife is U-shaped.

[0012] Optionally, a water-blocking plate is also included and a water-blocking plate is arranged at the bottom of the workbench.

[0013] Optionally, a dustproof net is also included, and a dustproof net is arranged inside the air guide duct.

[0014] Compared with the prior art, the utility model provides a trimming device for a blow molding machine, which has the following beneficial effects: 1. The output shaft of the servo motor drives the second gear to rotate, thereby rotating the blow-molded product. At this time, the cutting knife contacts the surface of the blow-molded product and cuts off the excess flash on the surface of the blow-molded product, thereby replacing manual cutting and achieving the purpose of automatic cutting, thereby improving the cutting efficiency.

[0015] 2. When the waste on the baffle plate reaches a certain weight, the waste will squeeze the baffle plate and rotate downward, and the waste will fall into the loading box through the baffle plate, making it easier to collect the waste in a centralized manner.

[0016] 3. By controlling the extension of the telescopic rod of the cylinder, the push plate moves forward, and then the push plate pushes the blow-molded product forward. At the same time, the second roller no longer contacts the blow-molded product, and then the blow-molded product is pushed out, thereby achieving the purpose of facilitating material return.

[0017] 4. By turning on the air pump, the air pump will draw the outside air into the air guide pipe, and then blow it out to the blow-molded product through the air guide seat, thereby blowing off the cut waste, thereby preventing the waste from adhering to the blow-molded product. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0019] Figure 2 It is a three-dimensional cross-sectional structural schematic diagram of the guide frame, the cutting knife and the second support frame of the utility model.

[0020] Figure 3 It is a three-dimensional cross-sectional structural schematic diagram of the water baffle plate, material baffle plate and charging box of the utility model.

[0021] Figure 4 For this utility model Figure 3 Enlarged view of point A in the middle.

[0022] Figure 5 It is a three-dimensional cross-sectional structural schematic diagram of the mounting frame, cylinder and push plate of the utility model.

[0023] Figure 6 It is a three-dimensional cross-sectional structural schematic diagram of the air pump, the air guide pipe and the third support frame of the utility model.

[0024] Figure 7 For this utility model Figure 6 Enlarged view of point B in the middle.

[0025] Explanation of the reference numerals: 1: workbench, 2: first connecting frame, 3: servo motor, 4: transmission rod, 5: first gear, 6: second gear, 7: first roller, 701: second roller, 8: first support frame, 9: T-bar, 10: guide frame, 11: cutting knife, 12: second support frame, 13: material baffle plate, 14: hinge, 15: torsion spring, 16: loading box, 17: mounting frame, 18: cylinder, 19: push plate, 20: air pump, 21: air guide pipe, 22: third support frame, 2201: fourth support frame, 23: second connecting frame, 24: air guide seat, 25: water-blocking plate, 26: dustproof net. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Example 1: A trimming device for a blow molding machine, see Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6, including a workbench 1, a first connecting frame 2, a servo motor 3, a transmission rod 4, a first gear 5, a second gear 6, a first roller 7, a second roller 701, a first support frame 8, a T-shaped rod 9, a guide frame 10, a cutting knife 11 and a second support frame 12. The workbench 1 is fixedly connected with the first connecting frame 2, the first connecting frame 2 is provided with a servo motor 3 by bolt connection, the output shaft of the servo motor 3 is connected with the transmission rod 4, the lower end of the transmission rod 4 is connected with the first gear 5, the workbench 1 is fixedly connected with two first support frames 8, the first support frame 8 is rotatably provided with the first roller 7, and the first on the right side is provided with a first gear 5. A second gear 6 is arranged on the top of the roller 7, and the second gear 6 is meshed with the first gear 5. A second support frame 12 is fixedly connected to the workbench 1, and a cutting knife 11 is arranged on the second support frame 12. The cutting knife 11 is U-shaped, so that it can fully contact with the surface of the blow-molded product, and thus the flash on the blow-molded product can be completely cut off. A guide frame 10 is fixedly connected to the first connecting frame 2, and the front end of the guide frame 10 is bent upward, and the material is withdrawn to drive the second roller 701 to break away from the contact with the blow-molded product. A T-shaped rod 9 is slidably arranged on the guide frame 10, and the lower end of the T-shaped rod 9 is connected to the second roller 701. A water-blocking plate 25 is arranged at the bottom of the workbench 1.

[0028] When the device is needed, the blow-molded product is placed between the two first rollers 7, and the servo motor 3 is turned on. The output shaft of the servo motor 3 rotates to drive the transmission rod 4 to rotate, so that the first gear 5 drives the second gear 6 to rotate, and then the blow-molded product rotates. At this time, the cutting knife 11 contacts the surface of the blow-molded product and cuts off the excess flash on the surface of the blow-molded product, thereby replacing manual cutting and achieving the purpose of automatic cutting, thereby improving the cutting efficiency. After the cutting is completed, the servo motor 3 is turned off and the blow-molded product is taken out.

[0029] Example 2: Based on Example 1, please refer to Figure 1 , Figure 3 and Figure 4 A loading box 16 is slidably arranged inside the workbench 1, a hinge 14 is arranged on the loading box 16 by bolt connection, a baffle plate 13 is rotatably arranged on the hinge 14, two torsion springs 15 are sleeved on the hinge 14, and two ends of the torsion spring 15 are respectively connected to the baffle plate 13 and the hinge 14.

[0030] When the blow molded product is cut, the cut waste falls onto the baffle plate 13 through the workbench 1. When the waste on the baffle plate 13 reaches a certain weight, the waste will squeeze the baffle plate 13 to rotate downward, and the torsion spring 15 will deform accordingly. The waste passes through the baffle plate 13 and falls into the loading box 16, so as to facilitate the centralized collection of the waste. When the waste no longer squeezes the baffle plate 13, the torsion spring 15 returns to its original shape to rotate the baffle plate 13 upward and reset.

[0031] See also Figure 5A mounting frame 17 is fixedly connected to the workbench 1, and a cylinder 18 is provided on the mounting frame 17 by bolt connection. A push plate 19 is connected to the telescopic rod of the cylinder 18, and the contact surface between the push plate 19 and the blow-molded product is an arc surface, so that the push plate 19 and the blow-molded product are more closely fitted.

[0032] After the blow-molded product is cut, the cylinder 18 is turned on and the telescopic rod of the cylinder 18 is controlled to extend so that the push plate 19 moves forward, thereby pushing the blow-molded product forward. At the same time, the T-shaped rod 9 drives the second roller 701 to move forward along the guide frame 10, so that the second roller 701 is no longer in contact with the blow-molded product, thereby pushing the blow-molded product out, thereby achieving the purpose of facilitating the return of the material.

[0033] See also Figure 1 , Figure 6 and Figure 7 An air pump 20 is provided on the workbench 1 by bolt connection, a third support frame 22 is fixedly connected to the workbench 1, a fourth support frame 2201 is fixedly connected to the workbench 1, an air guide pipe 21 is provided together with the third support frame 22, the fourth support frame 2201 and the air pump 20, a second connecting frame 23 is provided on the air guide pipe 21, an air guide seat 24 is fixedly connected to the second connecting frame 23, one end of the air guide pipe 21 is connected to the air guide seat 24, a dustproof net 26 is provided inside the air guide pipe 21, so as to prevent waste from entering the air pump 20 through the air guide pipe 21 and causing damage to the air pump 20.

[0034] After the blow-molded product is placed, the air pump 20 is turned on. The air pump 20 operates to draw external air into the air guide pipe 21, and then blows it out to the blow-molded product through the air guide seat 24, thereby blowing off the cut waste, thereby preventing the waste from adhering to the blow-molded product.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A trimming device for a blow molding machine, characterized by: The invention comprises a workbench (1), a first connecting frame (2), a servo motor (3), a transmission rod (4), a first gear (5), a second gear (6), a first roller (7), a second roller (701), a first support frame (8), a T-shaped rod (9), a guide frame (10), a cutting knife (11) and a second support frame (12); the workbench (1) is fixedly connected to the first connecting frame (2); the servo motor (3) is installed on the first connecting frame (2); the transmission rod (4) is connected to the output shaft of the servo motor (3); the lower end of the transmission rod (4) is connected to the first gear (5); Two first support frames (8) are fixedly connected to the workbench (1), a first roller (7) is rotatably arranged on the first support frame (8), a second gear (6) is arranged on the top of the first roller (7) on the right side, and the second gear (6) is meshed with the first gear (5), a second support frame (12) is fixedly connected to the workbench (1), a cutting knife (11) is arranged on the second support frame (12), a guide frame (10) is fixedly connected to the first connecting frame (2), a T-shaped rod (9) is slidably arranged on the guide frame (10), and the lower end of the T-shaped rod (9) is connected to the second roller (701).

2. The trimming device for a blow molding machine according to claim 1, characterized in that: The invention also comprises a material blocking plate (13), a hinge (14), a torsion spring (15) and a loading box (16); a loading box (16) is slidably arranged inside the workbench (1), a hinge (14) is installed on the loading box (16), a material blocking plate (13) is rotatably arranged on the hinge (14), and two torsion springs (15) are sleeved on the hinge (14).

3. The trimming device for a blow molding machine according to claim 1, characterized in that: It also comprises a mounting frame (17), a cylinder (18) and a push plate (19); the mounting frame (17) is fixedly connected to the workbench (1), the cylinder (18) is installed on the mounting frame (17), and the push plate (19) is connected to the telescopic rod of the cylinder (18).

4. A trimming device for a blow molding machine according to claim 3, characterized in that: The contact surface between the push plate (19) and the blow-molded product is a curved surface.

5. The trimming device for a blow molding machine according to claim 1, characterized in that: It also comprises an air pump (20), an air guide pipe (21), a third support frame (22), a fourth support frame (2201), a second connecting frame (23) and an air guide seat (24); the air pump (20) is installed on the workbench (1); the third support frame (22) is fixedly connected to the workbench (1); the fourth support frame (2201) is fixedly connected to the workbench (1); the third support frame (22), the fourth support frame (2201) and the air pump (20) are jointly provided with an air guide pipe (21); the air guide pipe (21) is provided with a second connecting frame (23); the second connecting frame (23) is fixedly connected to the air guide seat (24); one end of the air guide pipe (21) is connected to the air guide seat (24).

6. A trimming device for a blow molding machine according to claim 5, characterized in that: The cutting knife (11) is U-shaped.

7. The trimming device for a blow molding machine according to claim 1, characterized in that: It also includes a water-blocking plate (25), and the bottom of the workbench (1) is provided with the water-blocking plate (25).

8. The trimming device for a blow molding machine according to claim 5, characterized in that: A dustproof net (26) is also included. The air guide tube (21) is provided with a dustproof net (26) inside.

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