Automatic mixing and batching device for PVC (polyvinyl chloride) membrane material calendering

Abstract

The utility model relates to the technical field of PVC (polyvinyl chloride) film processing, in particular to an automatic mixing and batching device for PVC film material calendaring, which is characterized in that quantitative feeding structures are arranged on two sides of a mixing tank body, an inner cavity with a hemispherical bottom is formed in the mixing tank body, a discharge port is formed in the lower part of the inner cavity, an electric control valve is mounted in the discharge port, and the electric control valve is connected with the electric control valve. An upper cover body is movably connected to the upper end of the mixing tank body, a cutting and mixing mechanism is arranged on the lower portion of the upper cover body, an annular cutting knife and a stirring plate are welded and fixed to the outer side of an external stirring rod, and raw materials at the bottom can be lifted and mixed through rotation of a lifting screw; the driving motor drives the annular cutting knife and the stirring plate to mix and cut the raw materials, and the raw materials and the color master batches simultaneously exert force on the annular cutting knife and the stirring plate to push the whole upper cover body to rotate slowly, so that the mixing effect is further improved.

Description

Technical Field

[0001] This utility model relates to the field of PVC film processing technology, specifically an automatic mixing and batching device for PVC film calendering. Background Technology

[0002] PVC film is mainly made of polyvinyl chloride, a polymer material that uses one chlorine atom to replace one hydrogen atom in polyethylene. PVC film needs to be calendered during production and processing to calender the raw materials into thinner PVC films. During the calendering process, in order to facilitate color matching of the raw materials, a mixing tank is needed to color match the raw materials and masterbatch.

[0003] Existing technologies generally have a poor mixing effect when mixing raw materials and color masterbatches. Furthermore, because there are some large particles in the raw materials and color masterbatches, these large particles can cause slight differences in the color of the final PVC material during subsequent processing. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, this utility model proposes an automatic mixing device for PVC film calendering, which can cut and fully mix large particles in the raw materials through the material cutting and mixing mechanism at the bottom of the upper cover body.

[0005] The technical solution adopted by this utility model to solve its technical problem is: an automatic mixing device for PVC film calendering, including a mixing tank body, a quantitative feeding structure is provided on both sides of the mixing tank body, an inner cavity with a hemispherical bottom is opened inside the mixing tank body, and a discharge port is opened at the lower part of the inner cavity, and an electric control valve is installed in the discharge port. An upper cover body is movably connected to the upper end of the mixing tank body, and a mixing cutting mechanism is provided at the lower part of the upper cover body.

[0006] The material cutting and mixing mechanism includes a drive motor bolted to the upper part of the cover body. The output shaft of the drive motor is fixedly connected to a drive shaft via a flat key. A lifting screw is integrally formed on the outer side of the drive shaft. An external stirring rod is connected to the upper outer side of the drive shaft via a transmission structure. An annular cutting blade and a stirring plate are welded and fixed to the outer side of the external stirring rod.

[0007] Preferably, the quantitative feeding structure includes feeding pipes integrally formed on both sides of the mixing tank body, a flow valve is installed inside the feeding pipe, and a connecting flange is welded to the top of the feeding pipe.

[0008] Preferably, the inner side of the mixing tank body opening is integrally formed with a snap-fit ​​part, and the upper surface of the snap-fit ​​part is provided with an annular groove. The lower part of the upper cover body is integrally formed with eight sets of limiting blocks, the limiting blocks are inserted into the annular groove, and the lower part of the limiting blocks is rotatably connected to a roller through a bearing, the roller abutting against the annular groove.

[0009] Preferably, the upper cover body has an inner groove, and the transmission structure is disposed in the inner groove.

[0010] Preferably, the transmission structure includes a central gear and an external gear, wherein the central gear is rotatably connected to the upper cover body via a bearing, the central gear is welded and fixed to the outer side of the upper part of the drive shaft, the external gear meshes with the outer side of the central gear, and the external stirring rod is welded and fixed to the lower part of the external gear.

[0011] Preferably, the external stirring rods are arranged in a ring array of six groups, and the ring cutting blades and stirring plates are arranged in an alternating layered manner, with two groups of ring cutting blades symmetrically arranged in each layer, and six groups of stirring plates arranged in a ring array in each layer.

[0012] Preferably, the annular cutting blade is welded and fixed to the external stirring rod by two sets of connecting columns, and the surface of the stirring plate is grooved.

[0013] The advantages of this utility model are:

[0014] 1. This utility model can quantitatively add raw materials and color masterbatch through the flow valves in the quantitative feeding structure on both sides of the mixing tank body, which facilitates the control of the color depth of the finished product. The connecting flange at the top of the feeding pipe can be easily connected to the material source. After the raw materials are added into the interior of the mixing tank body, the raw materials at the bottom can be lifted upward by the action of the lifting screw, so that the raw materials and color masterbatch can be fully mixed.

[0015] 2. The drive motor of this utility model can drive the external stirring rod on the side to rotate in the same direction through the transmission structure. When the annular cutting blade and stirring plate at the bottom of the external stirring rod mix the raw materials and masterbatch, the raw materials and masterbatch will simultaneously exert a force on the annular cutting blade and stirring plate to push the entire upper cover body to rotate slowly, thereby further improving the mixing effect.

[0016] 3. The lower part of the cover body of this utility model is provided with rollers. The rollers allow the cover body to slide more smoothly in the annular groove on the upper part of the mixing tank body. Furthermore, through the action of the annular cutting blade, large particles in the raw materials and masterbatch can be cut, thereby improving the uniformity of the finished product color. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the mixing tank body of this utility model;

[0020] Figure 3 This is a cross-sectional view of the upper cover body of this utility model;

[0021] Figure 4 This is a schematic diagram of the material cutting and mixing mechanism of this utility model;

[0022] Figure 5 This is a schematic diagram of the external stirring rod of this utility model.

[0023] In the diagram: 1. Mixing tank body; 2. Quantitative feeding structure; 3. Top cover body; 30. Mixing and cutting mechanism; 31. Transmission structure; 101. Inner cavity; 102. Discharge port; 103. Snap-fit ​​part; 104. Annular groove; 201. Feeding pipe; 202. Connecting flange; 301. Drive motor; 302. Drive shaft; 303. Lifting screw; 304. External stirring rod; 305. Annular cutting blade; 306. Stirring plate; 307. Limiting block; 308. Roller; 309. Inner groove; 310. Central gear; 311. External gear; 312. Through groove. Detailed Implementation

[0024] 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 scope of protection of the present utility model.

[0025] The following is in conjunction with the appendix Figure 1-5 This application provides further details:

[0026] This application discloses an automatic mixing device for PVC film calendering. (Refer to...) Figure 1 and Figure 2The mixture includes a mixing tank body 1, and a quantitative feeding structure 2 is provided on both sides of the mixing tank body 1. The quantitative feeding structure 2 includes a feeding pipe 201 integrally formed on both sides of the mixing tank body 1. A flow valve is installed inside the feeding pipe 201, and a connecting flange 202 is welded to the top of the feeding pipe 201. The connecting flange 202 on the top of the feeding pipe 201 can be easily connected to the material source. The flow valve can quantitatively add raw materials and color masterbatch, which facilitates the control of the color depth of the finished product.

[0027] Reference Figure 1 The mixing tank body 1 has an inner cavity 101 with a hemispherical bottom, and a discharge port 102 is provided at the lower part of the inner cavity 101. An electric control valve is installed in the discharge port 102, and the raw materials and masterbatch can be discharged through the electric control valve of the discharge port 102 after they are mixed.

[0028] Reference Figure 1 and Figure 4 The upper end of the mixing tank body 1 is movably connected to the upper cover body 3. The inner side of the tank opening of the mixing tank body 1 is integrally formed with a snap-fit ​​part 103, and the upper surface of the snap-fit ​​part 103 is provided with an annular groove 104. The lower part of the upper cover body 3 is integrally formed with eight sets of limiting blocks 307. The limiting blocks 307 are inserted into the annular groove 104, and the lower part of the limiting blocks 307 is rotatably connected to a roller 308 through a bearing. The roller 308 abuts against the annular groove 104. The upper cover body 3 can be aligned by the annular groove 104 and the limiting blocks 307, reducing the amplitude of shaking of the upper cover body 3 during mixing. The roller 308 can rotate smoothly.

[0029] Reference Figure 3 The lower part of the upper cover body 3 is provided with a material cutting and mixing mechanism 30. The material cutting and mixing mechanism 30 includes a drive motor 301 that is bolted to the upper part of the upper cover body 3. The drive motor 301 is powered by a conductive slip ring.

[0030] Reference Figure 3 The output shaft of the drive motor 301 is fixedly connected to the drive shaft 302 via a flat key. The upper cover body 3 has an inner groove 309, and the transmission structure 31 is set in the inner groove 309. The transmission structure 31 includes a central gear 310 and an outer gear 311. The central gear 310 is rotatably connected to the upper cover body 3 via a bearing. The central gear 310 is welded and fixed to the outer side of the upper part of the drive shaft 302. The outer gear 311 meshes with the outer side of the central gear 310. The outer stirring rod 304 is welded and fixed to the lower part of the outer gear 311. The drive motor 301 drives the drive shaft 302 to rotate. The drive shaft 302 drives the outer stirring rod 304 to rotate through the cooperation of the central gear 310 and the outer gear 311.

[0031] Reference Figure 1 The outer side of the drive shaft 302 is integrally formed with a lifting screw 303. The lifting screw 303 can lift the raw material at the bottom upward, so that the raw material and masterbatch can be fully mixed. The raw material and masterbatch will give the lifting screw 303 a downward reaction force. Relying on the reaction force, the gravity of the upper cover body 3 and the components below it, the gap between the upper cover body 3 and the mixing tank body 1 can be effectively sealed to prevent the raw material from leaking out from the gap.

[0032] Reference Figure 1 and Figure 5 An annular cutter 305 and a stirring plate 306 are welded and fixed to the outside of the external stirring rod 304. The external stirring rod 304 is arranged in a ring array of six sets, and the annular cutter 305 and the stirring plate 306 are arranged in an alternating layered manner. Each layer has two sets of annular cutters 305 symmetrically arranged, and each layer has six sets of stirring plates 306 arranged in a ring array. The annular cutter 305 is welded and fixed to the external stirring rod 304 through two sets of connecting columns, and the surface of the stirring plate 306 has a groove 312. When the external stirring rod 304 rotates, the upper cover body 3 will rotate due to the reaction force of the internal raw material on the external stirring rod 304, thereby fully mixing the raw material. The annular cutter 305 and the stirring plate 306 outside the six sets of external stirring rods 304 can fully mix and cut the raw material.

[0033] Working principle: First, the PVC raw material and color masterbatch are connected to the source through two connecting flanges 202 respectively, and the proportion of the two added is controlled by the flow valve, so as to ultimately control the color of the finished PVC film product. Then, the upper cover body 3 and the mixing tank body 1 are combined, and the drive motor 301 is started. The drive motor 301 drives the lifting screw 303 on the outside of the drive shaft 302 to rotate. The lifting screw 303 can lift the raw material at the bottom upward, so that the raw material and color masterbatch can be fully mixed. The drive shaft 302 drives the annular cutter 305 and the stirring plate 306 on the outside of the external stirring rod 304 through the transmission structure 31 to fully mix and cut the raw material. The upper cover body 3 will rotate due to the reaction force of the internal raw material on the external stirring rod 304, so as to fully mix the raw material. After the mixing is completed, the mixed material is discharged through the discharge port 102 through the electric control valve.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. An automatic mixing and batching device for PVC film calendering, characterized in that: The mixture includes a mixing tank body (1), with a quantitative feeding structure (2) on both sides of the mixing tank body (1). The mixing tank body (1) has an inner cavity (101) with a hemispherical bottom, and a discharge port (102) is provided at the lower part of the inner cavity (101). An electric control valve is installed in the discharge port (102). The upper end of the mixing tank body (1) is movably connected to a top cover body (3), and a mixing cutting mechanism (30) is provided at the lower part of the top cover body (3). The material cutting and mixing mechanism (30) includes a drive motor (301) bolted to the upper part of the cover body (3). The output shaft of the drive motor (301) is fixedly connected to a drive shaft (302) via a flat key. A lifting screw (303) is integrally formed on the outer side of the drive shaft (302). An external stirring rod (304) is connected to the upper outer side of the drive shaft (302) via a transmission structure (31). An annular cutting blade (305) and a stirring plate (306) are welded and fixed to the outer side of the external stirring rod (304).

2. The automatic mixing and batching device for PVC film calendering according to claim 1, characterized in that: The quantitative feeding structure (2) includes feeding pipes (201) integrally formed on both sides of the mixing tank body (1). A flow valve is installed inside the feeding pipe (201), and a connecting flange (202) is welded to the top of the feeding pipe (201).

3. The automatic mixing and batching device for PVC film calendering according to claim 1, characterized in that: The mixing tank body (1) has an integrally formed snap-fit ​​part (103) on the inner side of the tank opening, and the upper surface of the snap-fit ​​part (103) is provided with an annular groove (104). The lower part of the upper cover body (3) has an integrally formed eight sets of limiting blocks (307). The limiting blocks (307) are inserted into the annular groove (104), and the lower part of the limiting blocks (307) is rotatably connected to a roller (308) through a bearing. The roller (308) abuts against the annular groove (104).

4. The automatic mixing and batching device for PVC film calendering according to claim 1, characterized in that: The upper cover body (3) has an inner groove (309) inside, and the transmission structure (31) is disposed in the inner groove (309).

5. The automatic mixing and batching device for PVC film calendering according to claim 4, characterized in that: The transmission structure (31) includes a central gear (310) and an external gear (311). The central gear (310) is rotatably connected to the upper cover body (3) via a bearing. The central gear (310) is welded and fixed to the outer side of the upper part of the drive shaft (302). The external gear (311) meshes with the outer side of the central gear (310). The external stirring rod (304) is welded and fixed to the lower part of the external gear (311).

6. The automatic mixing and batching device for PVC film calendering according to claim 5, characterized in that: The external stirring rods (304) are arranged in a ring array of six groups, and the ring cutting blades (305) and stirring plates (306) are arranged in an alternating layered manner. Each layer has two sets of ring cutting blades (305) symmetrically arranged, and each layer has six sets of stirring plates (306) arranged in a ring array.

7. The automatic mixing and batching device for PVC film calendering according to claim 6, characterized in that: The annular cutting blade (305) is welded and fixed to the external stirring rod (304) through two sets of connecting columns, and the surface of the stirring plate (306) has a groove (312).

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