Quantitative packaging device for plastic master batches

Abstract

The utility model provides a plastic master batch quantitative packing device, relates to the plastic master batch field, the plastic master batch quantitative packing device comprises a weighing platform used for weighing and a hopper used for being connected with a storage bin, the weighing platform comprises a fixing unit, a weighing unit and a controller used for converting a detected weight signal into an electric signal, a closing unit for changing the opening degree of the discharging port is arranged at the discharging position of the hopper, the hopper further comprises a control unit used for controlling the closing unit, and the control unit is in control connection with the controller. According to the quantitative packaging device for the plastic master batches, the weight is detected through the arranged controller, and when the set threshold value before the weighing threshold value is reached, the closing unit can be driven to work through the control unit, so that the size of the discharging opening can be gradually reduced, the feeding speed can be reduced, and the accurate quantitative feeding effect can be simply achieved.

Description

Technical Field

[0001] This utility model relates to the field of plastic masterbatch technology, specifically to a quantitative packaging device for plastic masterbatch. Background Technology

[0002] Existing patent CN222496730U discloses a large-capacity weighing and packaging machine, which includes a feeding machine, a loading machine, a weighing hopper, and a support frame. The weighing hopper has an inlet at the top and an outlet at the bottom. The feeding machine supplies material to the inlet of the loading machine, and the outlet of the loading machine is connected to the inlet of the weighing hopper. The weighing hopper is located on the support frame, which is used to elevate the weighing hopper and enable the inlet to connect with the outlet of the loading machine. The weighing hopper is equipped with a feeding belt and a weighing belt. The inlet is located directly above the feeding belt. The feeding belt delivers the packaging material to the weighing belt, and the weighing belt delivers the packaging material to the outlet for discharge.

[0003] This technical solution uses a fast-feed conveyor belt and a slow-replenishment conveyor belt to feed materials to a counterweight belt. When the material supply is close to the preset value, the fast-feed conveyor belt stops feeding, and the slow-replenishment conveyor belt replenishes the material, thus effectively preventing the supply of packaging materials from exceeding the preset packaging weight. However, this setup requires two conveyor belts, increasing the cost of quantitative packaging. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a quantitative packaging device for plastic masterbatch, which solves the problem of high cost in achieving quantitative packaging using two feeding belts with different conveying speeds, as mentioned in the background technology.

[0005] Technical solution

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a quantitative packaging device for plastic masterbatch, including a weighing platform for weighing and a hopper for connecting to a storage bin. The weighing platform includes a fixing unit, a weighing unit, and a controller that converts the detected weight signal into an electrical signal. The hopper is provided with a closing unit at the discharge port to change the opening size of the discharge port. The hopper also includes a control unit for controlling the closing unit, and the control unit is controlled and connected by the controller.

[0007] Furthermore, an extension rod is fixedly installed on the upper surface of the weighing unit, and an outwardly bent hook is provided at the top end of the extension rod.

[0008] Furthermore, the closing unit includes a set of symmetrically arranged rollers, and the circumference of the rollers is provided with semi-circular discharge grooves whose width gradually decreases to zero. The two semi-circular discharge grooves are symmetrically arranged. The control unit includes a central shaft fixedly connected to the center of the rollers. The central shaft passes through the hopper and extends to the outside of the hopper. A driven gear is fixedly installed at one end of the outer side of the central shaft. A gearbox is provided on the outer side of the hopper to drive the two driven gears to rotate synchronously in opposite directions. A motor controlled by the controller is fixedly installed at the input end of the gearbox.

[0009] Furthermore, one of the rollers has annular grooves on both sides of its circumference, and the other roller has annular blocks fixedly installed on both sides of its circumference, with the annular blocks rotatably connected inside the annular grooves.

[0010] Furthermore, the closing unit includes a half-frame fixedly installed at the bottom end of the hopper outlet, and the closing unit also includes a baffle hinged to the inner side of the half-frame at the bottom end of the hopper outlet. The control unit includes a toothed half-ring fixedly installed on the outside of the baffle, and the control unit also includes a motor fixedly installed on the outside of the hopper. The output end of the motor is fixedly installed with a power gear that meshes with the toothed half-ring.

[0011] Furthermore, a limiting frame is fixed to the side wall of the hopper, and a through groove is provided on the surface of the limiting frame to accommodate the passage of the toothed semi-ring.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. This plastic masterbatch quantitative packaging device detects weight through a set controller. When the weight reaches a set threshold, the control unit drives the closed unit to work, thereby gradually reducing the size of the discharge port and reducing the feeding speed. This allows for a relatively simple and accurate quantitative feeding effect.

[0014] 2. The plastic masterbatch quantitative packaging device has an extension rod fixedly installed on the upper surface of the weighing unit. The top of the extension rod is equipped with an outwardly bent hook. This design allows the four corners of the top of the ton bag to be connected to the hook, making it easier to feed material into the top opening of the ton bag. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the connection of the weighing platform of this utility model;

[0016] Figure 2 This is a half-sectional schematic diagram of the hopper of this utility model;

[0017] Figure 3 This is a schematic diagram of the roller of this utility model;

[0018] Figure 4 This is a schematic diagram of the hopper connection of this utility model;

[0019] Figure 5 This is a schematic diagram of the half-frame and half-section connection of this utility model.

[0020] The components include: 1. Weighing platform; 2. Hopper; 101. Fixed unit; 12. Weighing unit; 103. Controller; 21. Closing unit; 22. Control unit; 211. Roller; 212. Semi-ring discharge chute; 221. Central shaft; 222. Driven gear; 223. Gearbox; 224. Motor; 213. Ring groove; 214. Ring block; 215. Semi-frame; 216. Baffle; 225. Toothed semi-ring; 226. Motor; 227. Drive gear; 217. Limiting frame; 218. Through groove; 121. Extension rod; 122. Hook. Detailed Implementation

[0021] 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.

[0022] See Figure 1-3 Example 1: A quantitative packaging device for plastic masterbatch includes a weighing platform 1 for weighing and a hopper 2 for connecting to a storage bin. The weighing platform 1 includes a fixing unit 101, a weighing unit 12, and a controller 103 that converts the detected weight signal into an electrical signal. The discharge port of the hopper 2 is provided with a closing unit 21 that changes the opening size of the discharge port. The hopper 2 also includes a control unit 22 for controlling the closing unit 21. The control unit 22 is controlled and connected to the controller 103. The controller 103 sets a threshold value less than the quantitative weighing threshold 1 and a threshold value equal to the quantitative weighing threshold 2. After the threshold value 1 is reached, the control unit 22 controls the closing unit 21 to gradually reduce the discharge port. After the threshold value 2 is reached, the control unit 22 controls the closing unit 21 to completely close the discharge port. Threshold 1 and threshold 2 can be set separately. An extension rod 121 is fixedly installed on the upper surface of the weighing unit 12. The top of the extension rod 121 is provided with an outwardly bent hook 122. With this setting, the four corners of the top of the ton bag used for loading can be connected to the hook 122, so that the top opening of the ton bag can be easily fed.

[0023] The closing unit 21 includes a set of symmetrically arranged rollers 211. The circumferential surface of the rollers 211 is provided with a semi-circular discharge groove 212 whose width gradually decreases to zero. The two semi-circular discharge grooves 212 are symmetrically arranged. The control unit 22 includes a central shaft 221 fixedly connected to the center of the rollers 211. The central shaft 221 passes through the hopper 2 and extends to the outside of the hopper 2. A driven gear 222 is fixedly installed at one end of the outer side of the central shaft 221. A gearbox 223 is provided on the outside of the hopper 2 to drive the two driven gears 222 to rotate synchronously in opposite directions. A motor 224 controlled by the controller 103 is fixedly installed at the input end of the gearbox 223. With this setting, the control method is relatively simple, and the opening can be as small as possible when feeding material at the end, so as to achieve precise material dropping.

[0024] One of the rollers 211 has annular grooves 213 on both sides of its circumference, and the other roller 211 has annular blocks 214 fixedly installed on both sides of its circumference. The annular blocks 214 are rotatably connected inside the annular grooves 213. This arrangement ensures that the two rollers 211 are always on the same plane.

[0025] In use, the ton bag is fixed on the weighing unit 12. The motor 224 drives the two rollers 211 to rotate through the gearbox 223, so that the widest part of the semi-circular discharge chute 212 is located at the center of the hopper 2, thereby enabling rapid discharge. When the controller 103 detects that the weight information reaches the first threshold, it drives the motor 224 to work, thereby enabling the rollers 211 to rotate, so that the width of the semi-circular discharge chute 212 that are close to each other gradually decreases. Through this setting, the discharge speed can be reduced, and then it can be completely shut off when the controller 103 detects that the weight reaches the second threshold.

[0026] See Figure 4-5 Example 2, based on Example 1, provides a quantitative packaging device for plastic masterbatch. The closing unit 21 includes a half-frame 215 fixedly installed at the bottom of the discharge port of the hopper 2. The closing unit 21 also includes a baffle 216 hinged to the inner side of the half-frame 215 at the bottom of the discharge port of the hopper 2. The control unit 22 includes a toothed half-ring 225 fixedly installed on the outside of the baffle 216. The control unit 22 also includes a motor 226 fixedly installed on the outside of the hopper 2. A power gear 227 meshing with the toothed half-ring 225 is fixedly installed at the output end of the motor 226. This configuration allows for rapid changes in the discharge speed.

[0027] A limiting frame 217 is fixed to the side wall of the hopper 2. The surface of the limiting frame 217 is provided with a through groove 218 to accommodate the toothed half ring 225. This setting can limit the toothed half ring 225.

[0028] In use, the ton bag is fixed on the weighing unit 12. The motor 226 drives the power gear 227 to rotate, which in turn drives the toothed half ring 225 to rotate. Finally, the baffle 216 is rotated to the fully open state, so that the material can be discharged quickly. When the controller 103 detects that the weight information reaches the first threshold, the motor 226 flips, which drives the baffle 216 to move closer to the half frame 215, so that the discharge port gradually approaches. This setting can reduce the discharge speed, so that the controller 103 can completely close when it detects that the weight reaches the second threshold.

[0029] It should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A quantitative packaging device for plastic masterbatch, comprising a weighing platform (1) for weighing and a hopper (2) for connection to a storage bin, characterized in that: The weighing platform (1) includes a fixed unit (101), a weighing unit (12), and a controller (103) that converts the detected weight signal into an electrical signal; The hopper (2) is provided with a closing unit (21) at the discharge port to change the opening size of the discharge port. The hopper (2) also includes a control unit (22) for controlling the closing unit (21). The control unit (22) is controlled and connected by the controller (103).

2. The plastic masterbatch quantitative packaging device according to claim 1, characterized in that: The closed unit (21) includes a set of rollers (211) arranged symmetrically. The circumferential surface of the rollers (211) is provided with a semi-circular discharge groove (212) whose width gradually decreases to zero. The two semi-circular discharge grooves (212) are arranged symmetrically. The control unit (22) includes a central shaft (221) fixedly connected to the center of the roller (211). The central shaft (221) passes through the hopper (2) and extends to the outside of the hopper (2). A driven gear (222) is fixedly installed at one end of the outer side of the central shaft (221). A gearbox (223) is provided on the outer side of the hopper (2) to drive the two driven gears (222) to rotate synchronously in opposite directions. A motor (224) controlled by the controller (103) is fixedly installed at the input end of the gearbox (223).

3. The quantitative packaging device for plastic masterbatch according to claim 2, characterized in that: One of the rollers (211) has annular grooves (213) on both sides of its circumference, and the other roller (211) has annular blocks (214) fixedly installed on both sides of its circumference. The annular blocks (214) are rotatably connected inside the annular grooves (213).

4. The plastic masterbatch quantitative packaging device according to claim 1, characterized in that: The closing unit (21) includes a half frame (215) fixedly installed at the bottom of the discharge port of the hopper (2), and the closing unit (21) also includes a baffle (216) hinged to the inside of the half frame (215) at the bottom of the discharge port of the hopper (2); The control unit (22) includes a toothed half ring (225) fixedly installed on the outside of the baffle (216). The control unit (22) also includes a motor (226) fixedly installed on the outside of the hopper (2). The output end of the motor (226) is fixedly installed with a power gear (227) that meshes with the toothed half ring (225).

5. A quantitative packaging device for plastic masterbatch according to claim 4, characterized in that: The side wall of the hopper (2) is fixed with a limiting frame (217), and the surface of the limiting frame (217) is provided with a through groove (218) to accommodate the toothed half ring (225) to pass through.

6. A quantitative packaging device for plastic masterbatch according to claim 3 or 5, characterized in that: An extension rod (121) is fixedly installed on the upper surface of the weighing unit (12), and an outwardly bent hook (122) is provided at the top end of the extension rod (121).

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