Cold cutter parison cutting device in hollow blow molding machine

Abstract

The utility model relates to the technical field of hollow blow molding machines, in particular to a cold cutter parison cutting device in a hollow blow molding machine, which comprises a concentric-square-shaped shell, a pushing mechanism and a reciprocating mechanism, sliding through holes are arranged on two sides inside the concentric-square-shaped shell, two cooling cutter bodies are arranged inside the concentric-square-shaped shell, and the two cooling cutter bodies are opposite to each other. According to the device, a pushing mechanism is arranged in the concentric-square-shaped shell, a first motor is started, a first bevel gear and a round rod are made to rotate, accordingly, two threaded pipes are made to rotate, a moving block, a moving plate, a pushing plate, a reciprocating mechanism and a cooling cutter body are made to move, and then parison cutting is facilitated; a motor II is started, so that the two sliding plates and the two cooling cutter bodies move in a reciprocating manner, the parison can be conveniently cut in a reciprocating manner, the cutting effect on the parison is ensured, and the practicability of the cold cutter parison cutting device in the hollow blow molding machine is further improved.

Description

Technical Field

[0001] This utility model relates to the field of hollow blow molding machine technology, specifically to a cold-cutting blade preform cutting device in a hollow blow molding machine. Background Technology

[0002] A blow molding machine is a type of equipment used to produce hollow plastic products, widely used in plastic bottles, barrels, cans, automotive parts, toys, and other fields. Its working principle involves heating and melting plastic granules in an extruder to form a preform. After the preform is cut, compressed air is used to inflate it, forcing it to adhere tightly to the inner wall of the mold. After cooling, it is demolded to obtain the hollow product. A cold-cutting blade preform cutting device is a commonly used preform cutting device in blow molding machines. Existing cold-cutting blade preform cutting devices generally use two cylinders to move two cooling blades. One cylinder extension and retraction completes one cutting action. However, in normal use, a single cut may not be complete, often requiring manual activation of the cutting device for a second cut, resulting in low production efficiency and poor practicality. Utility Model Content

[0003] The purpose of this invention is to provide a cold-cutting preform cutting device for a hollow blow molding machine, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] The preform cutting device in a blow molding machine includes:

[0006] A U-shaped shell, wherein sliding through holes are provided on both sides inside the U-shaped shell, and two cooling blade bodies are arranged inside the U-shaped shell, with the two cooling blade bodies facing each other;

[0007] A pushing mechanism is disposed inside the U-shaped shell. The pushing mechanism includes a round rod, both ends of which are rotatably connected to the inner sidewall of the U-shaped shell. A driving component is provided at one end of the round rod. Threaded tubes are sleeved and fixed at both ends of the round rod, and a moving block is screwed onto the outer side of the threaded tube. A moving plate is fixedly connected to one end of the moving block, and the moving plate is slidably connected to the inside of the U-shaped shell. Pushing plates are fixedly connected to adjacent sides of the two moving plates, and the pushing plates are slidably connected to sliding through holes at corresponding positions.

[0008] The reciprocating mechanism is located between the two push plates.

[0009] Furthermore, multiple L-shaped plates are fixedly connected to the outer side of the U-shaped shell, and threaded holes are provided at the bottom of the L-shaped plates.

[0010] Furthermore, the length of the push plate is the same as the length inside the sliding through hole, and the thickness of the push plate is the same as the height inside the sliding through hole.

[0011] Furthermore, the driving component includes:

[0012] A bevel gear is sleeved and fixed to one end of the round rod;

[0013] A fixed block is fixedly connected to the inner bottom surface of the U-shaped shell. A motor is fixedly connected to one side of the fixed block. A bevel gear is fixedly connected to the output end of the motor, and the bevel gear meshes with the bevel gear.

[0014] Furthermore, the reciprocating mechanism includes:

[0015] Two rectangular shells are both disposed inside the U-shaped shell, and the two rectangular shells are respectively fixed to two push plates on opposite sides;

[0016] Two sliding plates are slidably connected to the interior of the two rectangular shells respectively. A rectangular notch is provided at the middle position of one side of each sliding plate. The two sliding plates are fixedly connected to the corresponding cooling blade bodies respectively, and an adjustment component is provided on the outer side of each sliding plate.

[0017] Preferably, the adjustment component includes:

[0018] Motor 2 is fixedly connected to the outer wall of the U-shaped shell, and the output end of Motor 2 passes through the side wall of the U-shaped shell and is fixedly connected to a reciprocating lead screw;

[0019] A connecting plate is screwed to the outside of the reciprocating lead screw, and the connecting plate is slidably connected to the inside of the spiral shell. Sliding grooves are provided at both ends of one side of the connecting plate.

[0020] Two sliders are slidably connected to the interior of the two grooves respectively. One end of each slider is fixedly connected to a movable rod, and the movable rod is slidably connected to the corresponding rectangular shell.

[0021] Two rectangular rods are fixedly connected to one end of two movable rods, and a connecting rod is provided at one end of each rectangular rod. Both ends of the connecting rod are rotatably connected to connecting seats, and the inner sidewalls of the two rectangular notches and one end of the two rectangular rods are respectively fixedly connected to the corresponding connecting seats.

[0022] Preferably, the top and bottom of one side of the sliding plate are provided with connection notches, and a plurality of compression springs are fixedly connected to one inner wall of the connection notch, and one end of the compression spring is fixedly connected to one inner wall of the corresponding rectangular shell.

[0023] Compared with the prior art, the beneficial effects of this utility model are:

[0024] By incorporating a pushing mechanism within the hollow blow molding shell, and by activating motor one, the bevel gear one and the round rod rotate, thereby causing the two threaded tubes to rotate. This, in turn, moves the moving block, the moving plate, the pushing plate, the reciprocating mechanism, and the cooling blade body, facilitating the cutting of the blank. Furthermore, by activating motor two, the two sliding plates and the two cooling blade bodies reciprocate, facilitating reciprocating cutting of the blank. This ensures the cutting effect of the blank and improves the practicality of the cold-cutting blank cutting device in the hollow blow molding machine. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the circular shell structure in this utility model;

[0027] Figure 3 This is a schematic diagram of the propulsion mechanism structure in this utility model;

[0028] Figure 4 This is a schematic diagram of the reciprocating mechanism structure in this utility model;

[0029] Figure 5 This is a schematic diagram showing the positional relationship between the rectangular shell and the sliding plate in this utility model.

[0030] In the diagram: 100, U-shaped shell; 101, sliding through hole; 110, L-shaped plate; 111, threaded hole; 120, cooling blade body; 200, pushing mechanism; 210, round rod; 220, threaded tube; 221, moving block; 230, bevel gear one; 240, fixed block; 241, motor one; 242, bevel gear two; 250, moving plate; 260, pushing plate; 300, reciprocating mechanism; 310, rectangular shell; 320, sliding plate; 321, rectangular notch; 322, connecting notch; 330, motor two; 331, reciprocating lead screw; 340, connecting plate; 341, slide groove; 350, slider; 351, moving rod; 360, rectangular rod; 361, connecting rod; 362, connecting seat; 370, compression spring. Detailed Implementation

[0031] 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. Example 1

[0032] Please see Figure 1-5In this embodiment of the utility model, the cold-cutting blank cutting device in the hollow blow molding machine includes: a mold shell 100, a pushing mechanism 200, and a reciprocating mechanism 300. Sliding through holes 101 are provided on both sides of the interior of the mold shell 100. Two cooling blade bodies 120 are disposed inside the mold shell 100, and the two cooling blade bodies 120 are opposite to each other. The pushing mechanism 200 is disposed inside the mold shell 100 and includes a round rod 210, both ends of which are rotatably connected to the inner sidewall of the mold shell 100. Next, a drive assembly is provided at one end of the round rod 210, and threaded tubes 220 are sleeved and fixed at both ends of the round rod 210. A moving block 221 is screwed onto the outside of the threaded tube 220. A moving plate 250 is fixedly connected to one end of the moving block 221, and the moving plate 250 is slidably connected to the inside of the U-shaped shell 100. A push plate 260 is fixedly connected to one side of each of the two moving plates 250, and the push plate 260 is slidably connected to the sliding through hole 101 at the corresponding position. The reciprocating mechanism 300 is disposed between the two push plates 260.

[0033] Specifically, the drive assembly drives the round rod 210 to rotate, which in turn causes the two threaded tubes 220 to rotate, thereby moving the moving block 221, the moving plate 250, and the push plate 260. The moving push plate 260 pushes the reciprocating mechanism 300 and the cooling blade body 120 to move. The two cooling blade bodies 120, moved to the appropriate position, facilitate the cutting of the parison. The reciprocating mechanism 300 pushes the two cooling blade bodies 120 to move back and forth, which facilitates the reciprocating cutting of the parison, ensuring the cutting effect of the parison and thus improving the practicality of the cold cutting blade parison cutting device in the hollow blow molding machine.

[0034] like Figure 3 As shown, in this embodiment, the length of the push plate 260 is the same as the length inside the sliding through hole 101, and the thickness of the push plate 260 is the same as the height inside the sliding through hole 101. The drive assembly includes a bevel gear 230 and a fixing block 240. The bevel gear 230 is sleeved and fixed to one end of the round rod 210. The fixing block 240 is fixed to the inner bottom surface of the U-shaped shell 100. A motor 241 is fixed to one side of the fixing block 240. A bevel gear 242 is fixed to the output end of the motor 241, and the bevel gear 242 meshes with the bevel gear 230.

[0035] In this embodiment, by starting the motor 241, the bevel gear 242 is driven to rotate. The bevel gear 242 meshes with the bevel gear 230, thereby causing the bevel gear 230 and the round rod 210 to rotate. This facilitates the adjustment of the reciprocating mechanism 300 and the cooling blade body 120, making the operation more convenient.

[0036] like Figure 1As shown, in this embodiment, a plurality of L-shaped plates 110 are fixedly connected to the outer side of the U-shaped shell 100, and the bottom of the L-shaped plate 110 is provided with a threaded hole 111.

[0037] In practice, the L-shaped plate 110 and threaded hole 111 are used in conjunction with bolts to facilitate the installation and fixation of the cold cutting blade preform cutting device in the hollow blow molding machine. Example 2

[0038] Based on Embodiment 1, in order to drive the two cooling blade bodies 120 to reciprocate, thereby facilitating the reciprocating cutting of the blank and ensuring the cutting effect of the blank.

[0039] like Figure 4-5 As shown, in this embodiment, the reciprocating mechanism 300 includes: two rectangular shells 310 and two sliding plates 320. The two rectangular shells 310 are both disposed inside the U-shaped shell 100. The opposite sides of the two rectangular shells 310 are respectively fixedly connected to two push plates 260. The two sliding plates 320 are slidably connected to the interior of the two rectangular shells 310. A rectangular notch 321 is provided at the middle position of one side of each sliding plate 320. The two sliding plates 320 are respectively fixedly connected to the corresponding cooling blade body 120. An adjustment assembly is provided on the outer side of the two sliding plates 320. The adjustment assembly includes: a second motor 330, a connecting plate 340, two sliders 350, and two rectangular rods 360. The second motor 330 is fixedly connected to the outer wall of the U-shaped shell 100. The output end of the second motor 330 passes through the side wall of the U-shaped shell 100 and is fixedly connected to a reciprocating lead screw 331. The connecting plate 340 is screwed onto the outer side of the reciprocating lead screw 331. Next, the connecting plate 340 is slidably connected to the interior of the U-shaped shell 100. Both ends of one side of the connecting plate 340 are provided with sliding grooves 341. Two sliders 350 are slidably connected to the interior of the two sliding grooves 341 respectively. One end of the slider 350 is fixedly connected to a moving rod 351, and the moving rod 351 is slidably connected to the corresponding rectangular shell 310. Two rectangular rods 360 are fixedly connected to one end of the two moving rods 351 respectively. One end of the rectangular rod 360 is provided with a connecting rod 361. Both ends of the connecting rod 361 are rotatably connected to connecting seats 362. The inner sidewall of the two rectangular notches 321 and one end of the two rectangular rods 360 are fixedly connected to the corresponding connecting seats 362 respectively. The top and bottom of one side of the sliding plate 320 are provided with connecting notches 322. Multiple compression springs 370 are fixedly connected to the inner sidewall of the connecting notch 322, and one end of the compression spring 370 is fixedly connected to the inner sidewall of the corresponding rectangular shell 310.

[0040] In specific implementation, by starting motor 330, the reciprocating lead screw 331 is rotated, thereby causing the connecting plate 340 to move back and forth. The movement of the connecting plate 340 will drive the two sliders 350 and the two moving rods 351 to move. The movement of the moving rods 351 will push the rectangular rod 360 to move. The two connecting rods 361 and the four connecting seats 362 are used in conjunction to facilitate the reciprocating movement of the two sliding plates 320, thereby causing the two cooling blade bodies 120 to move back and forth, which facilitates the reciprocating cutting of the blank and ensures the cutting effect of the blank.

[0041] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0042] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A cold-cutting preform cutting device in a hollow blow molding machine, characterized in that, include: A U-shaped shell (100) has sliding through holes (101) on both sides inside the U-shaped shell (100). Two cooling blade bodies (120) are arranged inside the U-shaped shell (100) and the two cooling blade bodies (120) are opposite to each other. A pushing mechanism (200) is disposed inside the shell (100). The pushing mechanism (200) includes a round rod (210). Both ends of the round rod (210) are rotatably connected to the inner sidewall of the shell (100). A driving component is provided at one end of the round rod (210). Threaded tubes (220) are sleeved and fixed at both ends of the round rod (210). A moving block (221) is screwed onto the outer side of the threaded tube (220). A moving plate (250) is fixedly connected to one end of the moving block (221). The moving plate (250) is slidably connected to the inside of the shell (100). A pushing plate (260) is fixedly connected to one side of each of the two moving plates (250). The pushing plate (260) is slidably connected to the sliding through hole (101) at the corresponding position. A reciprocating mechanism (300) is disposed between the two push plates (260).

2. The cold-cutting preform cutting device in the hollow blow molding machine according to claim 1, characterized in that, The outer side of the U-shaped shell (100) is fixed with a plurality of L-shaped plates (110), and the bottom of the L-shaped plates (110) is provided with threaded holes (111).

3. The cold-cutting preform cutting device in the hollow blow molding machine according to claim 1, characterized in that, The length of the push plate (260) is the same as the length inside the sliding through hole (101), and the thickness of the push plate (260) is the same as the height inside the sliding through hole (101).

4. The cold-cutting preform cutting device in the hollow blow molding machine according to claim 1, characterized in that, The driving component includes: A bevel gear (230) is sleeved and fixed to one end of the round rod (210); A fixed block (240) is fixedly connected to the inner bottom surface of the U-shaped shell (100). A motor (241) is fixedly connected to one side of the fixed block (240). A bevel gear (242) is fixedly connected to the output end of the motor (241), and the bevel gear (242) meshes with the bevel gear (230).

5. The cold-cutting preform cutting device in the hollow blow molding machine according to claim 1, characterized in that, The reciprocating mechanism (300) includes: Two rectangular shells (310) are both disposed inside the U-shaped shell (100), and the two rectangular shells (310) are respectively fixedly connected to two push plates (260) on opposite sides; Two sliding plates (320) are slidably connected to the interior of the two rectangular shells (310), and a rectangular notch (321) is provided at the middle position of one side of the sliding plate (320). The two sliding plates (320) are fixedly connected to the corresponding cooling blade body (120), and an adjustment component is provided on the outer side of the two sliding plates (320).

6. The cold-cutting preform cutting device in the hollow blow molding machine according to claim 5, characterized in that, The adjustment component includes: Motor 2 (330) is fixedly connected to the outer wall of the U-shaped shell (100), and the output end of motor 2 (330) passes through the side wall of the U-shaped shell (100) and is fixedly connected to a reciprocating lead screw (331). The connecting plate (340) is screwed to the outside of the reciprocating screw (331), and the connecting plate (340) is slidably connected to the inside of the shell (100). Both ends of one side of the connecting plate (340) are provided with sliding grooves (341). Two sliders (350) are slidably connected to the interior of the two grooves (341), and a moving rod (351) is fixedly connected to one end of each slider (350), and the moving rod (351) is slidably connected to the corresponding rectangular shell (310). Two rectangular rods (360) are fixedly connected to one end of two movable rods (351), and a connecting rod (361) is provided at one end of the rectangular rod (360). Both ends of the connecting rod (361) are rotatably connected to connecting seats (362), and the inner sidewall of the two rectangular notches (321) and one end of the two rectangular rods (360) are fixedly connected to the corresponding connecting seats (362).

7. The cold-cutting preform cutting device in the hollow blow molding machine according to claim 5, characterized in that, The top and bottom of one side of the sliding plate (320) are provided with connection notches (322), and a plurality of compression springs (370) are fixedly connected to one inner wall of the connection notch (322), and one end of the compression spring (370) is fixedly connected to one inner wall of the corresponding rectangular shell (310).

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