Small-sized single-screw extruder air-cooled pelletizing unit for producing anti-shrinking agent particles of shoe material

Abstract

The utility model belongs to the technical field of pelletizing equipment, and discloses an air-cooled pelletizing unit of a small-sized single-screw extruder for producing anti-shrinking agent particles of shoe materials, which comprises a processing table, an extruder body is mounted on the surface of the processing table, a shell is fixed on one side of the extruder body, an extrusion pipe is fixed at one end of the extruder body, and an air outlet pipe is fixed at the other end of the extruder body. A cutter assembly is arranged on the surface of the extrusion pipe, the cutter assembly comprises a mounting shaft rotationally connected to the interior of the extrusion pipe, and the surface of the mounting shaft is sleeved with a cutter head; the threaded rod is rotated to drive the moving block to move, the sliding rod on the moving block enables the pressing block to obliquely slide along the trapezoidal sliding groove, the pressing block can firmly press the cutterhead on the mounting shaft, the clamping block on the fixed shaft is matched with the cutterhead groove, precise positioning and stable mounting of the cutterhead are achieved, it is guaranteed that a cutter cannot be loosened in the high-speed pelletizing process, and the cutter is not prone to loosening. The pelletizing precision and stability are improved, the uniform size of the shoe material anti-shrinking agent particles is ensured, and the product quality is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of pelletizing equipment, specifically a small single-screw extruder air-cooled pelletizing unit for the production of shoe material shrinkage agent granules. Background Technology

[0002] In the process of shoe material production, the quality of anti-shrinkage agent particles plays a key role in the performance of shoe materials. In the existing technology, anti-shrinkage agent particles are usually produced by direct mixing and extrusion using a screw extruder. In the production process of the air-cooled pelletizing unit of the single screw extruder, the pelletizing blade assembly is a key component. After long-term use, it will wear out, affecting the pelletizing quality and efficiency, and needs to be replaced regularly.

[0003] The prior art discloses an air-cooled pelletizing device with publication number CN213198379U, which includes an extrusion mechanism, a cutter assembly, a cover, a fan, and a gas-solid separation mechanism. The cutter assembly is set at the extrusion die of the extrusion mechanism to cut the extruded material into pellets. The cover covers the cutter assembly and the extrusion die of the extrusion mechanism. The fan is connected to an air inlet on the cover, and the discharge port on the cover is connected to the gas-solid separation mechanism. Air cooling is used to cool the pellets and prevent them from contacting water, thereby ensuring pellet quality. The airflow carries the pellets away from the extrusion die, thus ensuring stable and continuous production. However, the above-mentioned cutter assembly requires the use of various tools to disassemble many fixed parts, which is cumbersome and time-consuming, resulting in long downtime and affecting production progress. At the same time, the traditional pelletizing blade assembly installation structure is prone to positioning deviation after frequent disassembly and assembly, affecting pelletizing quality.

[0004] Therefore, in response to the above problems, a small single-screw extruder air-cooled pelletizing unit for the production of shoe material shrinkage granules is proposed. Utility Model Content

[0005] To address the problems mentioned in the background art, this utility model provides a small single-screw extruder air-cooled pelletizing unit for the production of shoe material shrinkage granules. It can realize the quick and convenient replacement of the pelletizing blade assembly, reduce equipment downtime, improve production efficiency, and at the same time ensure the installation accuracy of the pelletizing blade assembly after replacement, thus ensuring the stable production quality of shoe material shrinkage granules.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a small single-screw extruder air-cooled pelletizing unit for the production of shoe material shrinkage granules, including a processing table, an extruder body is mounted on the surface of the processing table, a housing is fixed on one side of the extruder body, an extrusion tube is fixed on one end of the extruder body, and a cutter assembly is provided on the surface of the extrusion tube;

[0007] The cutter assembly includes a mounting shaft rotatably connected inside the extrusion tube. A cutter disc is fitted on the surface of the mounting shaft. A threaded rod is rotatably connected inside the mounting shaft. A moving block is screwed onto the surface of the threaded rod. Four sets of sliding rods arranged in a ring array are fixedly connected to the outer surface of the moving block. A pressure block is fitted on the surface of the sliding rod. A trapezoidal protrusion is integrally provided at the bottom end of the pressure block. A trapezoidal groove for the pressure block to slide obliquely is opened inside the mounting shaft.

[0008] Preferably, a mounting base is fixedly connected to the side of the mounting shaft surface away from the pressure block, and a ring-shaped array of locking blocks is fixedly connected to the surface of the mounting base. The surface of the cutter head is provided with a groove that matches the locking blocks.

[0009] Preferably, the slide rod has a T-shaped cross-section, and a spring is sleeved on the surface of the slide rod, with the two ends of the spring abutting against the slide rod and the pressure block, respectively.

[0010] Preferably, one end of the threaded rod passes through the interior of the mounting shaft and is connected to a rotating component disposed on one side of the mounting shaft, and an insertion groove is provided on the side of the mounting shaft near the rotating component.

[0011] Preferably, the surface of the cutter head is provided with a mounting groove for placing the pressure block, and a rubber pad is fixedly connected to one side of the surface of the pressure block.

[0012] Preferably, the outer peripheral surface of the cutter disc is fixedly connected with several sets of fixed cutter holders arranged in a ring array. The surface of the fixed cutter holders is fitted with cutters by bolts, and the cutters correspond to the positions of the extrusion holes of the extrusion tube.

[0013] Preferably, a fan is installed on the upper surface of the processing table, and the output end of the fan is connected to the inside of the housing via a connecting pipe.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. This utility model, by setting up a cutting blade assembly, moves a moving block by rotating a threaded rod. The sliding rod on the moving block causes the pressure block to slide obliquely along a trapezoidal groove. The pressure block can firmly press the blade disc onto the mounting shaft. Combined with the cooperation between the locking block on the fixed shaft and the groove of the blade disc, the blade disc is accurately positioned and stably installed, ensuring that the blade will not loosen during high-speed pelletizing, improving pelletizing accuracy and stability, ensuring uniform particle size of shoe material anti-shrinkage agent, and improving product quality. When it is necessary to replace the blade, simply rotate the threaded rod in the opposite direction to loosen the pressure block on the blade disc, and the blade disc can be easily disassembled for quick blade replacement. At the same time, the blade holder on the blade disc is fixed with bolts to install the blade, which also facilitates the individual replacement of worn blades. The operation is simple and convenient, greatly reducing equipment downtime and improving production efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure for mounting the shaft and the cutter head in this utility model;

[0018] Figure 3 This is a cross-sectional view of the cutter head in this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the pressure block and the slide bar in this utility model.

[0020] In the diagram: 1. Processing table; 2. Extruder body; 21. Extrusion tube; 3. Cutter assembly; 31. Mounting shaft; 32. Cutter disc; 33. Fixed cutter holder; 34. Cutter; 35. Pressure block; 36. Threaded rod; 37. Clamping block; 38. Mounting base; 39. Slide rod; 310. Spring; 311. Moving block; 4. Housing; 5. Fan. 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] like Figures 1 to 4 As shown, this utility model provides a small single-screw extruder air-cooled pelletizing unit for the production of shoe material shrinkage agent granules, including a processing table 1, an extruder body 2 installed on the surface of the processing table 1, a housing 4 fixed on one side of the extruder body 2, an extrusion tube 21 fixed on one end of the extruder body 2, and a cutter assembly 3 provided on the surface of the extrusion tube 21.

[0023] The cutter assembly 3 includes a mounting shaft 31 rotatably connected inside the extrusion tube 21. A cutter disc 32 is fitted onto the surface of the mounting shaft 31. A threaded rod 36 is rotatably connected inside the mounting shaft 31. A moving block 311 is screwed onto the surface of the threaded rod 36. Four sets of sliding rods 39 arranged in a ring array are fixedly connected to the outer surface of the moving block 311. A pressure block 35 is fitted onto the surface of the sliding rod 39. A trapezoidal protrusion is integrally provided at the bottom end of the pressure block 35. A trapezoidal groove for the pressure block 35 to slide obliquely is opened inside the mounting shaft 31. When installing the cutter disc 32, the cutter disc 32 is fitted onto the mounting shaft 31. Then, the threaded rod 36 is rotated. The threaded rod 36 drives the spring 310 to move axially. The spring 310 pushes the pressure block 35 to slide obliquely along the trapezoidal groove through the sliding rod 39, so that the pressure block 35 gradually presses the cutter disc 32, fixing the cutter disc 32 onto the mounting shaft 31.

[0024] like Figures 1 to 4 As shown, a mounting base 38 is fixedly connected to the side of the mounting shaft 31 away from the pressure block 35. A ring array of locking blocks 37 is fixedly connected to the surface of the mounting base 38. The surface of the cutter head 32 is provided with a groove that matches the locking block 37. The other side of the cutter head 32 is limited by the mounting base 38 to complete the installation of the cutter head 32. During installation, the locking block 37 is embedded in the groove of the cutter head 32 to ensure that the cutter head 32 is installed firmly.

[0025] The slide bar 39 has a T-shaped cross-section. A spring 310 is fitted on the surface of the slide bar 39, and the two ends of the spring 310 abut against the slide bar 39 and the pressure block 35 respectively. When disassembling the cutter head 32, the threaded rod 36 is rotated in the opposite direction. The pressure block 35 releases the cutter head 32 under the elastic force of the spring 310 and slides obliquely along the trapezoidal groove, so that the pressure block 35 is housed inside the mounting shaft 31.

[0026] One end of the threaded rod 36 passes through the interior of the mounting shaft 31 and is connected to a rotating component located on one side of the mounting shaft 31. An insertion groove is provided on the side of the mounting shaft 31 near the rotating component, which facilitates the rotation of the threaded rod 36.

[0027] The surface of the cutter head 32 is provided with an installation groove for placing the pressure block 35. A rubber pad is fixedly connected to one side of the surface of the pressure block 35. The rubber pad on the surface of the pressure block 35 can increase the friction between it and the cutter head 32, further enhancing the stability of the cutter head 32 installation.

[0028] like Figures 1 to 4As shown, a number of fixed tool holders 33 arranged in a ring array are fixedly connected to the outer circumferential surface of the cutter head 32. The surface of the fixed tool holders 33 is bolted with tools 34, and the positions of the tools 34 and the extrusion holes of the extrusion tube 21 are corresponding. A fan 5 is installed on the upper surface of the processing table 1, and the output end of the fan 5 is connected to the inside of the housing 4 through a connecting pipe. The tools 34 can be installed by bolts through the fixed tool holders 33 on the cutter head 32, which makes it easy to replace the worn tools 34 individually. The operation is simple and convenient, which greatly shortens the equipment downtime and improves production efficiency.

[0029] It should be noted that: the extruder body 2 is equipped with a drive device that can drive the mounting shaft 31 to rotate. During the pelletizing process, the cutter head 32 rotates with the mounting shaft 31, and the cutter 34 cuts the extruded material. The cut pellets are cooled by the fan 5.

[0030] Working principle and process: When installing the cutter head 32, the cutter head 32 is placed on the mounting shaft 31, and the locking block 37 is embedded in the groove of the cutter head 32 for initial positioning. Then, the threaded rod 36 is rotated, which drives the spring 310 to move axially. The spring 310 pushes the pressure block 35 to slide obliquely along the trapezoidal groove through the sliding rod 39, so that the pressure block 35 gradually presses the cutter head 32, fixing the cutter head 32 on the mounting shaft 31. When the tool 34 is worn and needs to be replaced, the threaded rod 36 is rotated in the opposite direction. The pressure block 35 is released from the cutter head 32 under the elastic force of the spring 310 and slides obliquely along the trapezoidal groove, so that the pressure block 35 is stored inside the mounting shaft 31, and the cutter head 32 can be removed to replace the tool 34. If only individual tools 34 need to be replaced, simply unscrew the bolts on the fixed tool holder 33, replace the tool 34, and then retighten the bolts. The whole process is simple to operate and effectively improves production efficiency and equipment maintenance convenience.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A small single-screw extruder air-cooled pelletizing unit for producing anti-shrinkage agent granules for shoe materials, comprising a processing table (1), wherein an extruder body (2) is mounted on the surface of the processing table (1), and a housing (4) is fixed to one side of the extruder body (2), characterized in that: One end of the extruder body (2) is fixed with an extrusion tube (21), and a cutter assembly (3) is provided on the surface of the extrusion tube (21). The cutter assembly (3) includes a mounting shaft (31) rotatably connected inside the extrusion tube (21). A cutter disc (32) is sleeved on the surface of the mounting shaft (31). A threaded rod (36) is rotatably connected inside the mounting shaft (31). A moving block (311) is screwed onto the surface of the threaded rod (36). Four sets of slide rods (39) arranged in a ring array are fixedly connected to the outer surface of the moving block (311). A pressure block (35) is sleeved on the surface of the slide rod (39). A trapezoidal protrusion is integrally provided at the bottom end of the pressure block (35). A trapezoidal groove for the pressure block (35) to slide obliquely is opened inside the mounting shaft (31).

2. The small single screw extruder air-cooled pelletizer set for shoe material shrinkage inhibitor particle production according to claim 1, characterized in that: A mounting base (38) is fixedly connected to the side of the mounting shaft (31) away from the pressure block (35). A ring array of locking blocks (37) is fixedly connected to the surface of the mounting base (38). A groove adapted to the locking block (37) is opened on the surface of the cutter head (32).

3. The small single screw extruder air-cooled pelletizer set for shoe material shrinkage inhibitor particle production according to claim 2, characterized by: The slide rod (39) has a T-shaped cross section. A spring (310) is sleeved on the surface of the slide rod (39), and the two ends of the spring (310) abut against the slide rod (39) and the pressure block (35) respectively.

4. The small single screw extruder air-cooled pelletizer set for shoe material shrinkage inhibitor particle production according to claim 3, characterized by: One end of the threaded rod (36) passes through the interior of the mounting shaft (31) and is connected to a rotating component located on one side of the mounting shaft (31). An insertion groove is provided on the side of the mounting shaft (31) near the rotating component.

5. The small single screw extruder air-cooled pelletizer unit for shoe material shrinkage agent particle production according to claim 1, characterized in that: The surface of the cutter head (32) is provided with an installation groove for placing the pressure block (35), and a rubber pad is fixedly connected to one side of the surface of the pressure block (35).

6. The small single screw extruder air-cooled pelletizer unit for shoe material shrinkage agent particle production according to claim 1, characterized in that: The outer peripheral surface of the cutter head (32) is fixedly connected to several sets of fixed cutter holders (33) arranged in a ring. The surface of the fixed cutter holders (33) is fitted with cutters (34) by bolts, and the cutters (34) correspond to the positions of the extrusion holes of the extrusion tube (21).

7. The small single screw extruder air-cooled pelletizer unit for shoe material shrinkage agent particle production according to claim 1, characterized in that: A fan (5) is installed on the upper surface of the processing table (1), and the output end of the fan (5) is connected to the inside of the housing (4) through a connecting pipe.

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