A speed reducer for plastic extruder

Abstract

The utility model discloses a reducer for a plastic extruder, relates to the technical field of reducer, and comprises a reducer body, wherein an output shaft is installed at the front end of the reducer body, an assembly mechanism is arranged at the end of the output shaft, an assembly shaft is detachably installed at the other end of the assembly mechanism, and the assembly mechanism comprises: a clamping component, which is arranged on the output shaft and the assembly shaft and is used for assembling and fixing the output shaft and the assembly shaft; a telescopic component, which is arranged on one side of the clamping component and is used for driving the clamping component to perform telescopic movement; a pushing component, which is arranged on the output shaft and comprises a screw rod welded to one end of the output shaft, a base plate is welded at the other end of the screw rod, and a screw sleeve is threadedly connected to the outer wall of the screw rod, thereby solving the problem that the existing reducers for extruders are mostly fixed matching shaft installations and are difficult to adapt to assembly shafts of different sizes, resulting in that most reducers on the market can only be directional installed on plastic extruders of corresponding models and have poor adaptability.

Description

Technical Field

[0001] The utility model relates to the technical field of reducers, in particular to a reducer used for a plastic extruder. Background Art

[0002] In the plastic processing industry, plastic extruders are key equipment, and their performance directly affects production efficiency and product quality. The working principle of a plastic extruder is usually to melt and extrude the plastic raw materials through the rotational motion of the screw. In order to achieve this process, the screw needs to run at an appropriate speed to ensure uniform melting and stable extrusion of the plastic. However, the full speed of the motor is too fast for the screw. If it is driven directly, a large amount of friction heat will be generated, resulting in a short residence time of the plastic, which cannot be fully melted and stirred, thus affecting the quality of the product. In order to solve this problem, a reduction device needs to be added between the motor and the screw to adjust the speed of the screw. Traditionally, the reducer, as an important supporting component of the plastic extruder, plays a key role. This type of reducer needs to have the characteristics of high precision, high load capacity and low noise to ensure the stable operation of the extruder and the quality of the plastic product.

[0003] The reference patent name is an extruder reducer (publication number CN201794994U). The utility model has high precision in adjusting the axial position of the transmission shaft through the adjusting cover and the adjusting nut. The sealing cover increases the sealing of the whole machine. By changing the type and layout of the bearings, better lubrication of each bearing is achieved, extending the service life, thereby reducing maintenance costs.

[0004] Based on the above documents, most of the existing extruder reducers are fixed matching shaft installation, which is difficult to adapt to assembly shafts of different sizes. As a result, most reducers on the market can only be directional installed on plastic extruders of corresponding models, and the adaptability is poor. For this reason, the utility model provides a reducer for a plastic extruder. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a reducer for a plastic extruder, which solves the problem that the existing extruder reducers are mostly fixed matching shaft installation, which is difficult to adapt to assembly shafts of different sizes, resulting in that most reducers on the market can only be directional installed on plastic extruders of corresponding models and have poor adaptability.

[0006] To achieve the above purpose, the utility model is implemented by the following technical scheme: a reducer for a plastic extruder, comprising a reducer body, an output shaft is installed at the front end of the reducer body, an assembly mechanism is provided at the end of the output shaft, an assembly shaft is detachably installed at the other end of the assembly mechanism, and the assembly mechanism includes:

[0007] The clamping assembly is arranged on the output shaft and the assembly shaft and is used to assemble and fix the output shaft and the assembly shaft;

[0008] The telescopic component is arranged on one side of the clamping component and is used to drive the clamping component to perform telescopic movement;

[0009] The pushing assembly is arranged on the output shaft, and includes a screw rod welded to one end of the output shaft, a base plate is welded to the other end of the screw rod, a screw sleeve is threadedly connected to the outer wall of the screw rod, a screw strip is fixed to the outer wall of the screw sleeve, and a limiting ring is integrally formed on the outer wall of the screw rod close to the output shaft.

[0010] Preferably, the clamping assembly comprises an L-shaped rod fitted on the front end surface, and a clamping block is fixed to the lower end of the L-shaped rod.

[0011] Preferably, a connecting rod is fixed to the outer wall of one end of the assembly shaft, and a slot seat is integrally formed on the connecting rod, and a slot for engaging with a locking block is provided on the inner surface of the slot seat.

[0012] Preferably, the telescopic assembly comprises a fixed block fixedly mounted on one side surface of the base plate, a sliding rod slidingly penetrates the fixed block, and an elastic telescopic member is sleeved on the outer side of the sliding rod, and a trapezoidal block is connected to the end of the elastic telescopic member.

[0013] Preferably, the elastic telescopic member includes a gasket fixedly mounted on the trapezoidal block, and a compression spring is connected to the gasket, and a gasket ring is connected to the other end of the compression spring, and the gasket ring is fixed to the fixed block.

[0014] Preferably, the clamping components and telescopic components are provided in multiple groups, and are distributed in a circular array based on the center of the base plate.

[0015] Beneficial Effects

[0016] The utility model provides a speed reducer for a plastic extruder. Compared with the prior art, it has the following beneficial effects:

[0017] (1) The speed reducer for the plastic extruder is designed with an assembly mechanism. The rotating screw bar drives the screw sleeve to rotate on the screw. Since the screw is limited on the output shaft by the limit ring, the rotation of the screw sleeve will be converted into a linear forward movement. As the pushing assembly moves forward, the sliding bar on the fixed block is squeezed by the trapezoidal block and begins to slide outward. The compression spring is compressed and the elastic telescopic member is in a compressed state. During this process, the L-shaped rod and the clamping block thereon gradually approach and insert into the clamping slot in the clamping slot seat of the assembly shaft as the trapezoidal block moves, completing the initial clamping action. When the clamping block completely enters the clamping slot and reaches a predetermined depth, the operator stops rotating the screw bar, and the clamping block is firmly locked in the clamping slot, thereby realizing a firm connection between the output shaft and the assembly shaft. The overall disassembly and assembly is convenient, so it can be adaptably installed on assembly shafts of different sizes, suitable for installation of plastic extruders of different models.

[0018] (2) The reducer for the plastic extruder has multiple groups of snap-on components and telescopic components, and the groups are arranged in a circular array with the center of the base plate as the reference. This design not only enhances the stability and uniformity of the connection, but also improves the load-bearing capacity and fault tolerance of the entire assembly mechanism. Even when some of the snap-on components or telescopic components fail, the reliability of the overall connection can be guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is an overall schematic diagram of the assembly mechanism of the utility model;

[0021] Figure 3 It is a schematic diagram of the disassembly of the assembly mechanism of the utility model;

[0022] Figure 4 It is a schematic diagram of the structure of the elastic telescopic member of the utility model.

[0023] In the figure: 1-reducer body, 2-output shaft, 3-assembly mechanism, 31-clamping assembly, 311-L-shaped rod, 312-clamping block, 313-connecting rod, 314-slot seat, 32-telescopic assembly, 321-fixed block, 322-sliding rod, 323-elastic telescopic member, 3231-gasket, 3232-compression spring, 3233-gasket, 324-trapezoidal block, 33-pushing assembly, 331-screw, 332-screw sleeve, 333-twisting strip, 334-limiting ring, 335-base, 4-assembly shaft. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-4 The utility model provides a technical solution: a reducer for a plastic extruder, comprising a reducer body 1, an output shaft 2 is installed at the front end of the reducer body 1, an assembly mechanism 3 is arranged at the end of the output shaft 2, an assembly shaft 4 is detachably installed at the other end of the assembly mechanism 3, and the assembly mechanism 3 includes:

[0026] The clamping assembly 31 is disposed on the output shaft 2 and the assembly shaft 4 and is used to assemble and fix the output shaft 2 and the assembly shaft 4;

[0027] The telescopic component 32 is disposed on one side of the clamping component 31 and is used to drive the clamping component 31 to perform telescopic movement;

[0028] The pushing assembly 33 is arranged on the output shaft 2, and includes a screw 331 welded to one end of the output shaft 2, a base plate 335 is welded to the other end of the screw 331, a screw sleeve 332 is threadedly screwed on the outer wall of the screw 331, a screw strip 333 is fixed on the outer wall of the screw sleeve 332, and a limiting ring 334 is integrally formed on the outer wall of the screw 331 close to the output shaft 2.

[0029] In this embodiment, the clamping assembly 31 includes an L-shaped rod 311 that is fitted on the front end surface, a clamping block 312 is fixed at the lower end of the L-shaped rod 311, a connecting rod 313 is fixed to the outer wall of one end of the assembly shaft 4, and a clamping slot seat 314 is integrally formed on the connecting rod 313, and a clamping slot seat 314 is provided on the inner surface of the clamping slot seat 314 for the clamping block 312 to cooperate with the clamping slot, and the telescopic assembly 32 includes a fixed block 321 fixedly mounted on one side surface of the base plate 335, a sliding rod 322 is slidably penetrated on the fixed block 321, and an elastic telescopic member 323 is sleeved on the outer side of the sliding rod 322, and a trapezoidal block 324 is connected to the end of the elastic telescopic member 323. The telescopic member 323 includes a gasket 3231 fixedly mounted on the trapezoidal block 324, and a compression spring 3232 is connected to the gasket 3231, and a gasket ring 3233 is connected to the other end of the compression spring 3232, and the gasket ring 3233 is fixed to the fixed block 321. The sliding rod 322 on the fixed block 321 is squeezed by the trapezoidal block 324 and begins to slide outward, the compression spring 3232 is compressed, and the elastic telescopic member 323 is in a compressed state. During this process, the L-shaped rod 311 and the clamping block 312 thereon gradually approach and insert into the clamping slot in the clamping slot seat 314 of the assembly shaft 4 as the trapezoidal block 324 moves.

[0030] In this embodiment, multiple groups of the snap-in components 31 and the telescopic components 32 are provided, and are distributed in a circular array with the center of the base plate 335 as the reference, thereby enhancing the stability and uniformity of the connection, and also improving the load-bearing capacity and fault tolerance of the entire assembly mechanism 3. Even when a partial snap-in component 31 or telescopic component 32 fails, the reliability of the overall connection can be guaranteed.

[0031] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0032] When the locking cam 332 is in the unlocking state, the locking cam 333 is in the unlocking state, and the locking cam 333 is in the unlocking state, and the locking cam 333 is in the unlocking state, and the locking cam 333 is in the unlocking state, and the locking cam 333 is in the unlocking state, and the locking cam 333 is in the unlocking state, and the locking cam 333 is in the unlocking state, and the locking cam 333 is in the unlocking state, and the locking cam 333 is in the unlocking state, and the locking cam 333 is in the unlocking state, and the locking cam 333 is in the unlocking state, and the locking cam 333 is in the unlocking state, and the locking cam 333 is in the unlocking state, and the locking cam 333 is in the unlocking state, and the locking cam 333 is in the unlocking state, and the locking cam 333 is in the unlocking state, and the locking cam 333 is in the unlocking state, and the locking cam 333 is in the unlocking state, and the locking cam 333 is in the unlocking state, and the locking cam 333 is in the unlocking state, and the locking cam 333 is in the unlocking state, and the locking cam 333 is in the unlocking state, and the locking cam 333 is in the unlocking state, and the locking cam 333 is in the unlocking state, and the locking cam 333 is in the unlocking state, and the locking cam 333 is in the unlocking state, and the locking cam 333 is in the unlocking state, and the locking cam When the predetermined depth is reached, the operator stops rotating the screw bar 333, and the clamping block 312 is firmly locked in the slot, thereby realizing a firm connection between the output shaft 2 and the assembly shaft 4; when the assembly shaft 4 needs to be disassembled, the screw bar 333 is rotated in the opposite direction to make the screw sleeve 332 move in the opposite direction along the screw rod 331, driving the pushing assembly 33 to retreat. During this process, the elastic telescopic member 323 gradually returns to its original state, pushing the trapezoidal block 324 to retract, and then driving the L-shaped rod 311 and the clamping block 312 to disengage from the slot, thereby realizing easy disassembly of the assembly shaft 4; since the clamping assembly 31 and the telescopic assembly 32 are both provided with multiple groups, and are distributed in a circular array with the center of the base plate 335 as the reference, such a design not only enhances the stability and uniformity of the connection, but also improves the load-bearing capacity and fault tolerance of the entire assembly mechanism 3, and even when part of the clamping assembly 31 or the telescopic assembly 32 fails, the reliability of the overall connection can be guaranteed.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used 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. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A speed reducer for a plastic extruder, comprising a speed reducer body (1), wherein an output shaft (2) is mounted at the front end of the speed reducer body (1), characterized in that: The end of the output shaft (2) is provided with an assembly mechanism (3), the other end of the assembly mechanism (3) is detachably mounted with an assembly shaft (4), and the assembly mechanism (3) comprises: A clamping assembly (31) is arranged on the output shaft (2) and the assembly shaft (4) and is used to assemble and fix the output shaft (2) and the assembly shaft (4); The telescopic component (32) is arranged on one side of the clamping component (31) and is used to drive the clamping component (31) to perform telescopic movement; The pushing assembly (33) is arranged on the output shaft (2), and comprises a screw rod (331) welded to one end of the output shaft (2), a base plate (335) welded to the other end of the screw rod (331), a screw sleeve (332) being screwed on the outer wall of the screw rod (331), a screwing strip (333) being fixed on the outer wall of the screw sleeve (332), and a limiting ring (334) being integrally formed on the outer wall of the screw rod (331) on the side close to the output shaft (2).

2. A speed reducer for a plastic extruder according to claim 1, characterized in that: The clamping assembly (31) comprises an L-shaped rod (311) which is fitted on the front end surface, and a clamping block (312) is fixed to the lower end of the L-shaped rod (311).

3. A reducer for a plastic extruder according to claim 2, characterized in that: A connecting rod (313) is fixed to the outer wall of one end of the assembly shaft (4), and a slot seat (314) is integrally formed on the connecting rod (313), and a slot for the engaging block (312) to engage with is provided on the inner surface of the slot seat (314).

4. A speed reducer for a plastic extruder according to claim 1, characterized in that: The telescopic assembly (32) comprises a fixed block (321) fixedly mounted on a side surface of a base plate (335), a sliding rod (322) slidingly passing through the fixed block (321), and an elastic telescopic member (323) sleeved on the outer side of the sliding rod (322), and a trapezoidal block (324) connected to the end of the elastic telescopic member (323).

5. A speed reducer for a plastic extruder according to claim 4, characterized in that: The elastic telescopic member (323) comprises a gasket (3231) fixedly mounted on the trapezoidal block (324), and a compression spring (3232) is connected to the gasket (3231), and a gasket ring (3233) is connected to the other end of the compression spring (3232), and the gasket ring (3233) is fixed to the fixed block (321).

6. A speed reducer for a plastic extruder according to claim 1, characterized in that: The clamping assembly (31) and the telescopic assembly (32) are provided in multiple groups and are distributed in a circular array based on the center of the base plate (335).

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