A feeding hopper for hot melt adhesive extruder

Abstract

The utility model relates to extruder feed hopper technical field discloses a kind of feed hoppers for hot melt adhesive extruder, for hot melt adhesive extruder main body, including feed hopper, installation plate is arranged on feed hopper, discharge pipe for discharging excess material is arranged on feed hopper, installation frame is arranged on installation plate, annular disc is rotatably arranged in installation plate, sliding column is movably arranged in annular disc, the bottom end of sliding column is provided with connecting rod, the bottom end of connecting rod is provided with the stirring vane for the raw material in feed hopper Stirring;Through first motor drive annular disc rotation, drive stirring vane to carry out horizontal direction rotation stirring;Second motor drive cam plate and toggle linkage, make stirring vane reciprocate while rotating;This three-dimensional stirring mode can cover the raw material area of each height in feed hopper, effectively break the dead angle of traditional one-way stirring, improve raw material mixing uniformity, avoid the caking problem caused by local material accumulation simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of extruder feed hopper technology, specifically a feed hopper for a hot melt adhesive extruder. Background Technology

[0002] In hot melt adhesive extrusion molding, the feed hopper is the core component for raw material storage and transportation, and its performance directly affects the stability of the extrusion process and product quality. Due to the high viscosity and easy agglomeration characteristics of hot melt adhesive raw materials, if the feed hopper cannot achieve uniform mixing and efficient preheating, it is very easy to cause problems such as insufficient fluidity, local accumulation, or even pipe blockage before extrusion, which in turn leads to quality accidents such as intermittent extrusion and product surface defects. Therefore, optimizing the raw material handling capacity of the feed hopper has become the key to improving the extrusion efficiency and yield of hot melt adhesive.

[0003] In existing technologies, most hot melt adhesive extruders use a single rotary stirring structure in the feed hopper, where a motor drives the stirring blades to rotate horizontally to mix the raw materials. However, this design has the following drawbacks: because the stirring blades have a fixed trajectory, the raw materials are only stirred in the horizontal layer, resulting in poor flowability of the raw materials in the vertical direction. This leads to uneven mixing between the upper and lower layers, especially in the area near the inner wall of the feed hopper, where dead zones are easily formed, causing the raw materials to accumulate and clump after long-term use. In addition, existing devices lack a raw material preheating function. High-viscosity raw materials have further reduced flowability at low temperatures, requiring more energy to overcome resistance during extrusion. This not only increases the equipment load but also causes defects such as rough surface and bubbles in the extruded product due to insufficient melting of the raw materials. More seriously, when the raw materials clog the extrusion pipe due to uneven mixing or insufficient preheating, the machine must be stopped for cleaning. This not only prolongs the production cycle but may also accelerate equipment wear and increase maintenance costs due to frequent start-ups and shutdowns. Summary of the Invention

[0004] Based on this, the purpose of this utility model is to provide a feed hopper for a hot melt adhesive extruder, so as to solve the technical problems in the prior art where the feed hopper has a single stirring method, resulting in uneven mixing of raw materials, and the lack of effective preheating function, resulting in insufficient flowability of high-viscosity raw materials.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a feeding hopper for a hot melt adhesive extruder, used on the main body of the hot melt adhesive extruder, including a feeding hopper, a mounting plate provided on the feeding hopper, a waste discharge pipe for discharging excess material provided on the feeding hopper, a mounting frame provided on the mounting plate, an annular disk rotatably disposed in the mounting plate, a sliding column movably disposed in the annular disk, a connecting rod provided at the bottom end of the sliding column, and a stirring blade provided at the bottom end of the connecting rod for stirring the raw material in the feeding hopper; when the annular disk rotates, the stirring blade is in a rotating state to stir the raw material in the feeding hopper; when the sliding column slides up and down in the annular disk, the stirring blade is in a sliding up and down state to agitate the raw material in the feeding hopper.

[0006] Preferably, the mounting plate has a mounting groove, and the annular disk is rotatably disposed inside the mounting groove; The annular disk has a strip-shaped groove, and the sliding column is slidably disposed within the strip-shaped groove.

[0007] Preferably, the mounting plate is provided with a first mounting bracket, the first mounting bracket is provided with a first motor, and the output shaft of the first motor is connected to a first gear through a coupling; a second gear that meshes with the first gear is fixed to the outside of the annular disk; when the first gear rotates, it drives the second gear to rotate, so that the annular disk is in a rotating state in the mounting plate.

[0008] Preferably, the mounting plate is provided with a mounting rod, and a top plate is slidably provided outside the mounting rod; when the top plate slides outside the mounting rod, its bottom is in contact with the top of the sliding column. The mounting rod is fitted with a first spring, the top end of which is fixedly connected to the bottom of the actuating plate, and the bottom end of which is fixedly connected to the top end of the mounting plate.

[0009] Preferably, a second mounting bracket is provided on the first mounting bracket, and a second motor is provided inside the second mounting bracket. A cam plate is connected to the output shaft of the second motor via a coupling. A rubber wheel is provided in the cam plate. When the cam plate rotates, the rubber wheel is in contact with the top end of the push plate.

[0010] Preferably, a support frame is fixed to the side of the second mounting bracket, and the support frame has a through hole for the output shaft of the second motor to pass through.

[0011] Preferably, the mounting plate is provided with a connecting frame, the connecting frame is provided with an electric heating roller, the top of the connecting frame is provided with a fan, the bottom of the connecting frame is connected to a connecting pipe, and a connector is fixed to the end of the connecting pipe away from the connecting frame; the feed hopper is provided with a placement groove, and the connector is located inside the placement groove.

[0012] In summary, the present invention has the following main advantages: 1. This invention utilizes a first motor to drive a ring disc to rotate, which in turn drives the stirring blades to rotate and stir horizontally; a second motor drives a cam plate to work in conjunction with a top plate, causing the stirring blades to reciprocate up and down while rotating. This three-dimensional stirring mode can cover the raw material areas at various heights within the feed hopper, effectively breaking the dead zones of traditional unidirectional stirring, improving the uniformity of raw material mixing, and avoiding clumping problems caused by localized material accumulation, thus providing a stable supply of raw materials for subsequent extrusion processes.

[0013] 2. This utility model, through its equipped waste discharge pipe, can discharge excess raw materials in real time, preventing overloading of the feed hopper and affecting the mixing effect; simultaneously, through the cooperation of a fan and an electric heating roller, hot air is precisely delivered to the raw material area for preheating. The waste discharge function ensures a dynamic balance of raw material quantity, while the preheating function reduces extrusion resistance by improving raw material flowability. The synergistic effect of the two makes the extrusion process more stable and controllable, reducing equipment energy consumption and improving the consistency of final product quality. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the feed hopper and the main body of the hot melt adhesive extruder in this utility model. Figure 1 ; Figure 2 This is a three-dimensional structural diagram of the feed hopper and the main body of the hot melt adhesive extruder in this utility model. Figure 2 ; Figure 3 This is a three-dimensional structural diagram of the feed hopper in this utility model; Figure 4 This is a partial disassembly diagram of the feed hopper in this utility model. Figure 1 ; Figure 5 This is a partial disassembly diagram of the feed hopper in this utility model. Figure 2 ; Figure 6 This is a partial disassembly diagram of the feed hopper in this utility model. Figure 3 ; Figure 7 This is a partial disassembly diagram of the connecting frame in this utility model.

[0015] In the diagram: 1. Main body of hot melt adhesive extruder; 2. Feed hopper; 21. Mounting plate; 22. Waste discharge pipe; 23. Mounting frame; 31. Annular disc; 32. Sliding column; 33. Connecting rod; 34. Stirring blade; 41. First mounting frame; 42. First motor; 43. First gear; 44. Second gear; 45. Mounting rod; 46. Top plate; 47. First spring; 48. Second mounting frame; 49. Second motor; 410. Support frame; 411. Cam plate; 412. Rubber wheel; 51. Connecting frame; 52. Heating roller; 53. Fan; 54. Connecting pipe; 55. Connector. Detailed Implementation

[0016] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0017] The embodiments of this utility model will be described below based on its overall structure. Example 1

[0018] Please see Figures 1-6 This utility model provides a technical solution: a feeding hopper for a hot melt adhesive extruder, used on the main body 1 of the hot melt adhesive extruder, including a feeding hopper 2, a mounting plate 21 provided on the feeding hopper 2, and a waste discharge pipe 22 for discharging excess material. The waste discharge pipe 22 can promptly discharge excess raw material in the feeding hopper 2, avoiding the risk of uneven mixing or overflow due to excessive raw material, and ensuring the stability and safety of equipment operation; a mounting frame 23 is provided on the mounting plate 21, and an annular disk 31 is rotatably arranged in the mounting plate 21, and a sliding column 32 is movably arranged in the annular disk 31. A connecting rod 33 is provided at the bottom end of the feed hopper 2, and a stirring blade 34 is provided at the bottom end of the connecting rod 33 to stir the raw materials in the feed hopper 2. When the annular disk 31 rotates, the stirring blade 34 is in a rotating state to stir the raw materials in the feed hopper 2. When the sliding column 32 slides up and down in the annular disk 31, the stirring blade 34 is in a sliding state to agitate the raw materials in the feed hopper 2. The stirring blade 34 achieves a compound motion through the rotation of the annular disk 31 and the up and down sliding of the sliding column 32, which can perform three-dimensional stirring of the raw materials, effectively improve the uniformity of the raw material mixing, and avoid local accumulation or agglomeration.

[0019] Furthermore, the mounting plate 21 has a mounting groove, and the annular disk 31 is rotatably disposed inside the mounting groove; the annular disk 31 has a strip-shaped sliding groove, and the sliding column 32 is slidably disposed in the strip-shaped sliding groove; the mounting groove provides stable support for the annular disk 31, while the strip-shaped sliding groove restricts the movement trajectory of the sliding column 32, ensuring that the up and down sliding of the stirring blade 34 is precise and controllable, thereby improving the stirring efficiency and reliability.

[0020] Furthermore, a first mounting bracket 41 is provided on the mounting plate 21, and a first motor 42 is provided inside the first mounting bracket 41. A first gear 43 is connected to the output shaft of the first motor 42 via a coupling. A second gear 44 that meshes with the first gear 43 is fixed to the outside of the annular disk 31. When the first gear 43 rotates, it drives the second gear 44 to rotate, so that the annular disk 31 is in a rotating state in the mounting plate 21. Through the transmission combination of the first motor 42, the first gear 43 and the second gear 44, the precise rotation control of the annular disk 31 is realized, ensuring that the stirring blade 34 performs preliminary mixing of raw materials at a stable speed, and avoiding uneven mixing caused by speed fluctuations.

[0021] Furthermore, an installation rod 45 is provided on the mounting plate 21, and a top plate 46 is slidably disposed outside the mounting rod 45; when the top plate 46 slides outside the mounting rod 45, its bottom is in contact with the top of the sliding column 32; a first spring 47 is sleeved on the mounting rod 45, the top end of the first spring 47 is fixedly connected to the bottom of the top plate 46, and the bottom end of the first spring 47 is fixedly connected to the top end of the mounting plate 21; the first spring 47 provides an elastic reset function for the top plate 46, so that it can periodically reciprocate when the sliding column 32 is in contact, thereby driving the stirring blade 34 to slide up and down, enhancing the three-dimensional stirring effect.

[0022] Furthermore, a second mounting frame 48 is provided on the first mounting frame 41, and a second motor 49 is provided inside the second mounting frame 48. A cam plate 411 is connected to the output shaft of the second motor 49 via a coupling. A rubber wheel 412 is provided in the cam plate 411. When the cam plate 411 rotates, the rubber wheel 412 is in contact with the top of the top plate 46. The second motor 49 drives the linkage between the cam plate 411 and the rubber wheel 412, and through periodic contact with the top plate 46, the stirring blade 34 is forced to move up and down, further breaking the dead zone of raw material mixing and improving the mixing uniformity.

[0023] Furthermore, a support frame 410 is fixed to the side of the second mounting bracket 48. The support frame 410 has a through hole for the output shaft of the second motor 49 to pass through. The support frame 410 provides stable support for the second motor 49, and the through hole design ensures smooth transmission of the output shaft, reduces the impact of vibration on the stirring effect, and extends the service life of the equipment. Example 2

[0024] Please see Figure 7Furthermore, in conjunction with Embodiment 1, the mounting plate 21 is provided with a connecting frame 51, an electric heating roller 52 is provided in the connecting frame 51, a fan 53 is provided at the top of the connecting frame 51, a connecting pipe 54 is connected to the bottom of the connecting frame 51, and a connector 55 is fixed at the end of the connecting pipe 54 away from the connecting frame 51; a placement groove is provided on the feed hopper 2, and the connector 55 is located inside the placement groove; the cooperation of the electric heating roller 52 and the fan 53 through the connecting pipe 54 and the connector 55 accurately delivers hot air to the raw material area to achieve preheating treatment, improve the fluidity of the raw material, reduce extrusion resistance, thereby optimizing the extrusion quality and reducing energy consumption.

[0025] The feed hopper of this hot melt adhesive extruder is installed after the main body 1 of the hot melt adhesive extruder, and its working process is as follows: When the equipment is started, the first motor 42 drives the first gear 43 to rotate through the coupling. The first gear 43 meshes with the second gear 44 outside the annular disk 31, causing the annular disk 31 to rotate within the mounting groove of the mounting plate 21. During the rotation of the annular disk 31, the sliding column 32 in its internal strip groove rotates synchronously, and drives the stirring blade 34 to rotate within the feed hopper 2 through the connecting rod 33, thus performing preliminary stirring of the raw materials.

[0026] Meanwhile, the second motor 49 drives the cam plate 411 to rotate via a coupling, and the rubber wheel 412 on the cam plate 411 periodically abuts against the top of the agitator plate 46. Under the thrust of the rubber wheel 412, the agitator plate 46 slides downward along the mounting rod 45 and compresses the first spring 47; when the rubber wheel 412 disengages, the elastic restoring force of the first spring 47 pushes the agitator plate 46 back to its original position. The reciprocating sliding of the agitator plate 46 causes its bottom to continuously abut against the top of the sliding column 32, forcing the sliding column 32 to slide up and down in the strip groove of the annular disk 31, thereby driving the stirring blade 34 to move up and down while rotating through the connecting rod 33, realizing three-dimensional agitation of the raw materials in the feed hopper 2, and avoiding the accumulation or agglomeration of the raw materials.

[0027] During the mixing process, if there is too much raw material in the feed hopper 2, the excess raw material can be discharged through the waste discharge pipe 22. At the same time, the blower 53 starts and blows external air onto the electric heating roller 52. The heated air is then transported through the connecting pipe 54 and the connector 55 to the placement slot of the feed hopper 2 to preheat the raw material, improve its fluidity, and further optimize the extrusion effect.

[0028] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A feed hopper for a hot melt adhesive extruder, used on the main body (1) of the hot melt adhesive extruder, comprising a feed hopper (2), characterized in that: The feed hopper (2) is provided with an installation plate (21), the feed hopper (2) is provided with a waste discharge pipe (22) for discharging excess material, the installation plate (21) is provided with an installation frame (23), the installation plate (21) is rotatably provided with an annular disk (31), the annular disk (31) is movably provided with a sliding column (32), the bottom end of the sliding column (32) is provided with a connecting rod (33), and the bottom end of the connecting rod (33) is provided with a stirring blade (34) for stirring the raw materials in the feed hopper (2). When the annular disk (31) rotates, the stirring blade (34) is in a rotating state to stir the raw materials in the feed hopper (2); When the sliding column (32) slides up and down in the annular disk (31), the stirring blade (34) is in a sliding state to agitate the raw material in the feed hopper (2).

2. The feed hopper for a hot melt adhesive extruder according to claim 1, characterized in that: The mounting plate (21) has a mounting groove, and the annular disk (31) is rotatably disposed inside the mounting groove; The annular disk (31) has a strip groove, and the sliding column (32) is slidably disposed in the strip groove.

3. The feed hopper for a hot melt adhesive extruder according to claim 1, characterized in that: The mounting plate (21) is provided with a first mounting bracket (41), and a first motor (42) is provided inside the first mounting bracket (41). A first gear (43) is connected to the output shaft of the first motor (42) through a coupling. The outer side of the annular disk (31) is fixed with a second gear (44) that meshes with the first gear (43). When the first gear (43) rotates, it drives the second gear (44) to rotate, causing the annular disk (31) to rotate in the mounting plate (21).

4. The feed hopper for a hot melt adhesive extruder according to claim 3, characterized in that: An installation rod (45) is provided on the mounting plate (21), and a top plate (46) is slidably provided on the outside of the mounting rod (45). When the top plate (46) slides outside the mounting rod (45), its bottom is in contact with the top of the sliding column (32); The mounting rod (45) is fitted with a first spring (47), the top end of the first spring (47) is fixedly connected to the bottom of the actuating plate (46), and the bottom end of the first spring (47) is fixedly connected to the top end of the mounting plate (21).

5. The feed hopper for a hot melt adhesive extruder according to claim 4, characterized in that: The first mounting bracket (41) is provided with a second mounting bracket (48), and the second mounting bracket (48) is provided with a second motor (49). The output shaft of the second motor (49) is connected to a cam plate (411) via a coupling. The cam plate (411) is provided with a rubber wheel (412). When the cam plate (411) rotates, the rubber wheel (412) and the top of the push plate (46) are in contact.

6. The feed hopper for a hot melt adhesive extruder according to claim 5, characterized in that: A support frame (410) is fixed to the side of the second mounting bracket (48), and the support frame (410) has a through hole for the output shaft of the second motor (49) to pass through.

7. The feed hopper for a hot melt adhesive extruder according to claim 1, characterized in that: A connecting frame (51) is provided on the mounting plate (21), an electric heating roller (52) is provided in the connecting frame (51), a fan (53) is provided at the top of the connecting frame (51), a connecting pipe (54) is connected to the bottom of the connecting frame (51), and a connector (55) is fixed at the end of the connecting pipe (54) away from the connecting frame (51). The feed hopper (2) is provided with a placement slot, and the connector (55) is located inside the placement slot.

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