Buoyancy shaping device of plastic extruding machine

Abstract

The utility model discloses a buoyancy shaping device of a plastic extruding machine, which comprises a plastic extruding machine die head in a vertical hoisting state, a feeding end in butt joint with the plastic extruding machine is arranged above the plastic extruding machine die head, a die cavity and an outlet of the die cavity are arranged below the plastic extruding machine die head, a material receiving water tank is arranged right below the outlet of the die cavity of the plastic extruding machine die head, and the material receiving water tank is connected with the plastic extruding machine die head. A die cavity of the plastic extruding machine die head is of a closed annular structure. The plastic extruding machine is very skillful, only the material receiving water tank needs to be additionally arranged right below the outlet of the die cavity of the plastic extruding machine die head, as the density of the thermoplastic elastomer TPE / TPR material is close to that of water, the water tank receives the pull strap in sequence, the influence of the gravity of the pull strap is counteracted, the pull strap slowly permeates into the water for blanking, and cooling water is used for cooling and shaping; the size stability of the whole pull strap in terms of the strap length, the strap width and even the strap thickness is guaranteed, the wall thickness of the pull strap is uniform, the regularity is good, and the appearance is excellent.

Description

Technical Field

[0001] The utility model relates to the technical field of extruders, in particular to a buoyancy shaping device for extruders. Background Art

[0002] Yoga resistance bands (hereinafter referred to as resistance bands), also known as elastic bands or resistance bands, are usually 1500 to 2000 mm long (circumference) and 150 to 200 mm wide. They are fitness auxiliary equipment that can change a single exercise method. Most of these resistance bands on the market are made of thermoplastic elastomer TPE / TPR, also known as artificial rubber or synthetic rubber. The preparation method generally adopts extrusion molding and injection molding. Injection molding requires mold opening and demoulding during production, which requires large investment and low efficiency.

[0003] Because the tension belt has a special shape and is a closed ring structure, the die head of the extruder needs to be hoisted in a vertical state, and then the entire ring is extruded downwards. However, during the extrusion process, there is a problem that has always been a headache in the industry. Due to the existence of gravity, and the fact that the tension belt is hot after being extruded and has not been fully formed, the tension belt will have uneven wall thickness and poor regularity on the bandwidth. The lower belt surface part that is first extruded out of the mold cavity loses the friction of the mold cavity wall, and under the blessing of its own gravity, it pulls the upper belt surface part out of the mold cavity, making the upper belt surface part thinner than the lower belt surface part, with poor regularity, and even affecting the problem that the consistency of the belt length of the tension belt given by the vertical extrusion method cannot be guaranteed. The scrap rate has reached a terrible 20% ratio in normal production. Utility Model Content

[0004] The purpose of the utility model is to overcome the above defects of the prior art and provide a buoyancy shaping device for an extruder. It can be said that it is very clever. It only needs to install a material receiving water pool just below the die cavity outlet of the extruder die head. Since the density of the thermoplastic elastomer TPE / TPR material is close to that of water, the water pool smoothly receives the tension belt, offsets the influence of the tension belt's own gravity, and slowly seeps into the water to discharge the material. The cooling water then cools and shapes it, ensuring the overall stability of the tension belt in terms of length, width and even thickness, so that the wall thickness of the tension belt is uniform, the regularity is good, and the appearance is excellent.

[0005] In order to achieve the above purpose, the utility model is realized through the following technical scheme: a buoyancy shaping device for an extruder, comprising an extruder die head in a vertical hoisting state, the upper part of the extruder die head is a feeding end connected to the extruder, the lower part of the extruder die head is a mold cavity and its outlet, and is characterized in that the mold cavity of the extruder die head is a closed annular structure, and a material receiving water pool is arranged directly below the mold cavity outlet of the extruder die head.

[0006] The utility model can be said to be very clever in its conception. It was a long-standing problem before it was solved. It is so simple to think that it requires careful observation and association, and a familiarity and cognition of the product quality. The utility model only needs to install a material receiving pool just below the die cavity outlet of the extruder die head. The principle is that since the density of the thermoplastic elastomer TPE / TPR material and water are close, the pool smoothly receives the tension belt, offsets the influence of the tension belt's own gravity, and slowly seeps into the water to discharge the material. The cooling water is then cooled and shaped, ensuring the overall stability of the tension belt in terms of length and width, making the thickness of the tension belt uniform and excellent in appearance. Only water can do the job. Others, such as adding a supporting mechanism, are not enough. Although the tension belt's own gravity is offset, it is supported and cannot smoothly discharge the material, which will cause the unformed and warm tension belt to adhere together and cannot be formed.

[0007] Preferably, the shape of the receiving water pool is matched with the shape of the die cavity of the extruder die head, and the shape of the receiving water pool is also a closed ring structure.

[0008] The shape of the water pool matches the shape of the mold cavity, which can well shape the product shape of the tension belt and also plays a shaping role. The water pool is annular, and the water waves are small when feeding, not the whole pool shape, the latter has large water waves, which will reduce the influence of water waves on product shaping.

[0009] Preferably, the mold cavity of the extruder die head and the pool shape of the receiving water pool are both closed circular ring structures.

[0010] The shapes of the resistance bands are circular, oval, rectangular, triangular, etc. according to the specific training needs of the customers.

[0011] Preferably, the mold cavity of the extruder die head and the pool shape of the receiving water pool are both closed elliptical structures.

[0012] The shapes of the resistance bands are circular, oval, rectangular, triangular, etc. according to the specific training needs of the customers.

[0013] Preferably, the mold cavity of the extruder die head and the pool shape of the receiving water pool are both closed rectangular structures.

[0014] The shapes of the resistance bands are circular, oval, rectangular, triangular, etc. according to the specific training needs of the customers.

[0015] Preferably, a roller conveying mechanism is provided in the receiving water pool.

[0016] The roller conveying mechanism makes the discharging of materials very convenient and realizes continuous production.

[0017] Preferably, a lifting platform vehicle is supported underneath the receiving water pool.

[0018] In order to facilitate the discharge of the water tank, the lifting platform car can be flexibly raised and lowered. In order to facilitate the docking with the extruder die head, the lifting platform car can be flexibly displaced and docked.

[0019] Preferably, the receiving water pool is provided with a water inlet and a water outlet.

[0020] The water in the receiving pool must be organically renewed to ensure that the water is clean and free of impurities to prevent it from affecting the forming of the tension belt.

[0021] Preferably, a circulation pipeline is connected between the water inlet and the water outlet, and a heat exchanger is connected to the circulation pipeline.

[0022] The water temperature of the material connection tension belt will increase in temperature. In order to better achieve the shaping effect of the cooling tension, the water temperature is circulated to cool down or control the temperature.

[0023] Preferably, a water filter is connected to the circulation pipeline.

[0024] The water filter is mainly used to filter water, remove impurities and ensure that the water is clear and clean.

[0025] Beneficial effect: The utility model can be said to be very clever. It only needs to install a material receiving water pool just below the die cavity outlet of the extruder die head. Since the density of the thermoplastic elastomer TPE / TPR material is close to that of water, the water pool smoothly receives the tension belt, offsets the influence of the tension belt's own gravity, and slowly seeps into the water to discharge the material. The cooling water then cools and shapes it, ensuring the overall stability of the tension belt in terms of length, width and even thickness, so that the wall thickness of the tension belt is uniform, the regularity is good, and the appearance is excellent. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A structural schematic diagram of the utility model;

[0027] Figure 2 Another structural schematic diagram of the utility model;

[0028] Figure 3 A structural schematic diagram of the mold cavity of the utility model;

[0029] Figure 4 Another structural schematic diagram of the mold cavity of the utility model;

[0030] Figure 5 This is another structural schematic diagram of the mold cavity of the utility model.

[0031] In the figure: 1-extruder die head, 2-material receiving pool, 3-lifting platform vehicle, 11-circular structure, 12-elliptical structure, 13-rectangular structure, 21-water inlet, 22-water outlet, 4-cold and heat exchanger, 5-water filter. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features and objectives of the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments.

[0033] Example 1: Figure 1 As shown, an extruder buoyancy shaping device includes an extruder die head 1 in a vertically hoisted state, the upper part of the extruder die head 1 is a feeding end connected to the extruder, the lower part of the extruder die head 1 is a mold cavity and its outlet, the mold cavity of the extruder die head 1 is a closed annular structure, and a material receiving water pool 2 is arranged directly below the mold cavity outlet of the extruder die head 1.

[0034] The receiving water pool 2 is provided with a water inlet 21 and a water outlet 22. A circulation pipeline is connected between the water inlet 21 and the water outlet 22, and a cold-heat exchanger 4 is connected to the circulation pipeline, and a water filter 5 is also connected to the circulation pipeline.

[0035] A roller conveying mechanism is provided in the receiving pool 2 (hidden in the pool and not shown in the figure), that is, the water surface of the receiving pool 2 has a part that is connected to the extruder die head 1, and also has a part that extends out from the bottom of the extruder die head 1, so that the roller conveying mechanism can deliver materials to the outside of the bottom of the extruder die head 1, and the manufacturer can observe the discharge of materials with the naked eye.

[0036] Example 2: Figure 2 As shown, a lifting platform vehicle 3 is supported below the receiving pool 2.

[0037] The rest is the same as in Example 1.

[0038] Example 3: Figure 3 As shown, the shape of the receiving pool 2 matches the shape of the die cavity of the extruder die 1, and the shape of the receiving pool 2 is also a closed ring structure. The die cavity of the extruder die 1 and the pool shape of the receiving pool 2 are both closed circular ring structures 11.

[0039] Example 4: Figure 4 As shown, the shape of the receiving pool 2 matches the shape of the die cavity of the extruder die 1, and the shape of the receiving pool 2 is also a closed ring structure. The die cavity of the extruder die 1 and the shape of the receiving pool 2 are both closed elliptical structures 12.

[0040] The rest is the same as in Example 1.

[0041] Example 5: Figure 5 As shown, the shape of the receiving pool 2 matches the shape of the die cavity of the extruder die 1, and the shape of the receiving pool 2 is also a closed ring structure. The die cavity of the extruder die 1 and the shape of the receiving pool 2 are both closed rectangular structures 13.

[0042] The rest is the same as in Example 1.

[0043] Usage: This utility model can be said to be very clever. It only requires the installation of a receiving water pool just below the die cavity outlet of the extruder die head. Since the density of the thermoplastic elastomer TPE / TPR material is close to that of water, the water pool smoothly receives the tension belt, offsetting the influence of the tension belt's own gravity, and slowly seeps into the water to discharge the material. The cooling water then cools and shapes it, ensuring the overall stability of the tension belt in terms of length, width and even thickness, so that the wall thickness of the tension belt is uniform, the regularity is good, and the appearance is excellent.

Claims

1. A buoyancy shaping device for an extruder, comprising an extruder die head in a vertical hoisting state, wherein the upper portion of the extruder die head is a feed end connected to the extruder, and the lower portion of the extruder die head is a mold cavity and an outlet thereof, characterized in that: The die cavity of the extruder die head is a closed annular structure, and a material receiving water pool is arranged just below the die cavity outlet of the extruder die head.

2. The buoyancy shaping device for an extruder according to claim 1, characterized in that: The shape of the receiving water pool is matched with the shape of the die cavity of the extruder die head, and the shape of the receiving water pool is also a closed ring structure.

3. The buoyancy shaping device for an extruder according to claim 2, characterized in that: The mold cavity of the extruder die head and the pool shape of the material receiving pool are both closed circular ring structures.

4. The buoyancy shaping device for an extruder according to claim 2, characterized in that: The mold cavity of the extruder die head and the pool shape of the material receiving pool are both closed elliptical structures.

5. The buoyancy shaping device for an extruder according to claim 2, characterized in that: The mold cavity of the extruder die head and the pool shape of the material receiving pool are both closed rectangular structures.

6. The buoyancy shaping device for an extruder according to claim 1, characterized in that: A roller conveying mechanism is arranged in the material receiving water pool.

7. The buoyancy shaping device for an extruder according to claim 1, characterized in that: A lifting platform vehicle is supported below the material receiving pool.

8. The buoyancy shaping device for an extruder according to claim 1, characterized in that: The material receiving water pool is provided with a water inlet and a water outlet.

9. The buoyancy shaping device for an extruder according to claim 8, characterized in that: A circulation pipeline is connected between the water inlet and the water outlet, and a cold-heat exchanger is connected in the circulation pipeline.

10. The buoyancy shaping device for an extruder according to claim 9, characterized in that: A water filter is connected to the circulation pipeline.

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