Kneading machine
The support plate is driven by a threaded rod and a worm gear, which enables easy disassembly and cleaning of the mixing shaft, solving the problem of cleaning dead corners and improving the cleaning efficiency and kneading quality of the kneader.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI DAHUA PHARM CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-05-19
AI Technical Summary
Existing kneaders cannot remove the mixing shaft from the housing during cleaning, resulting in cleaning dead spots and difficulty in cleaning residue on the outer surface of the mixing shaft.
A kneading machine was designed. Through the cooperation of a threaded rod and a worm gear, the support plate is driven away from the kneading box, so that the stirring shaft can be removed from the disassembly port. Stability is ensured by a slide bar and a slide frame. Combined with a sealing strip and a sealing groove, automated control and sealing effect are achieved.
It enables easy disassembly and cleaning of the stirring shaft, avoids cleaning dead corners, improves cleaning efficiency and equipment operation convenience, and ensures the airtightness of the kneading process and the mixing quality.
Smart Images
Figure CN224252686U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of kneading machine technology, specifically to kneading machines. Background Technology
[0002] A kneader is an ideal piece of equipment for kneading, mixing, vulcanizing, and polymerizing high-viscosity, elasto-plastic materials. Kneaders can be used to produce silicone rubber, sealants, hot melt adhesives, food-grade gum bases, and pharmaceutical preparations. A kneader is a special mixing and stirring device, most commonly employing two Σ-blades arranged in a parallel, tangential, differential speed configuration. One blade travels at a high speed, while the other travels at a low speed, to generate shear force. The different blade speeds allow the materials to be rapidly sheared, resulting in a uniform mixture. Kneaders are frequently used in the production of tubular implantable long-acting contraceptives to mix silicone rubber and various compatible fillers.
[0003] An existing patent (publication number: CN221772128U) discloses an easy-to-clean kneader, relating to the field of kneader technology. It includes an anti-stick mixing chamber with a convenient cleaning mechanism inside. A mixing mechanism is fixedly connected to the inner wall of the anti-stick mixing chamber. The convenient cleaning mechanism includes a movable plate with a sliding plate hinged to its front. Two sets of positioning posts are fixedly connected to the back of the movable plate. A button controller is fixedly connected to the left side of the anti-stick mixing chamber. Two electric telescopic rods, two connecting pipes, and a ventilation duct are fixedly connected to the inner wall of the anti-stick mixing chamber. Through the anti-stick mixing chamber, the convenient cleaning mechanism, and the mixing mechanism, the mixing mechanism can knead and mix the materials inside the anti-stick mixing chamber. After the materials are discharged from the anti-stick mixing chamber, the convenient cleaning mechanism can easily clean the materials adhering to the inner wall of the anti-stick mixing chamber and the mixing mechanism, thus conveniently cleaning any material residue inside the anti-stick mixing chamber.
[0004] The above solution cannot remove the stirring shaft from the inside of the box when cleaning the box. The stirring shaft being inside the box will affect the operating space when cleaning the inside of the box, resulting in cleaning dead corners, and it is also inconvenient to clean the residue attached to the outer surface of the stirring shaft. Utility Model Content
[0005] To address the shortcomings of existing technologies, this application provides a kneading machine that allows for easy removal of the stirring shaft from the inside of the housing, increasing the operating space for cleaning the inside of the housing, avoiding cleaning dead corners, and facilitating the removal of residues adhering to the outer surface of the stirring shaft. This solves the problems of not being able to remove the stirring shaft from the housing during cleaning, the stirring shaft being inside the housing affecting the operating space for cleaning the inside of the housing, the creation of cleaning dead corners, and the inconvenience of cleaning residues adhering to the outer surface of the stirring shaft.
[0006] To achieve the aforementioned goals of facilitating the removal of the stirring shaft from the housing, increasing operational space for cleaning the interior of the housing, avoiding cleaning dead spots, and easily cleaning residue adhering to the outer surface of the stirring shaft, this application provides the following technical solution: a kneader, including a base, a kneading housing on the top of the base, two stirring shafts inside the kneading housing, a disassembly port on one side of the kneading housing for the stirring shafts to pass through, a rotating shaft at one end of each stirring shaft, the outer surface of the middle of the rotating shaft being rotatably mounted within the inner wall of the middle of a push plate, one end of each of the two rotating shafts corresponding to the two stirring shafts being mounted on two output shafts on one side of a gearbox, the input shaft of the gearbox being mounted at one end of the output shaft of a first motor, the bottom of the push plate being mounted on the top of a support plate via a support rod, a connecting plate being mounted on the bottom of the support plate, a threaded rod being threadedly connected to the inner wall of the middle of the connecting plate, both ends of the threaded rod being rotatably mounted on the top of the base via a fixing plate, the bottom of the gearbox being mounted on the top of the support plate via a support rod, and the first motor being mounted on the top of the support plate via a fixing block.
[0007] With the above solution, when the threaded rod rotates, the connecting plate can drive the support plate to gradually move away from the kneading box. In turn, the support plate drives the push plate away from the kneading box, and the stirring shaft is driven through the disassembly port to be taken out from inside the kneading box. This achieves the effect of making it easy to remove the stirring shaft from inside the box, increasing the operating space when cleaning the inside of the box, avoiding cleaning dead corners, and making it easy to clean the residue attached to the outer surface of the stirring shaft.
[0008] Furthermore, a worm gear is provided at the end of the threaded rod away from the kneading box, and the worm gear meshes with the worm.
[0009] Through the above scheme, the meshing setting of the worm gear and worm can achieve precise control of the rotation of the threaded rod, with better transmission stability and self-locking function. After driving the support plate and stirring shaft to the appropriate position, it can be automatically locked to prevent the stirring shaft from moving accidentally when not in operation, and facilitate the operator to clean and maintain the kneading box and stirring shaft.
[0010] Furthermore, one end of the worm gear is disposed at one end of the output shaft of the second motor, and the other end of the worm gear is rotatably disposed at the top of the base via a fixing plate, and the second motor is disposed at the top of the base via a fixing block.
[0011] Through the above scheme, the second motor provides the power source for the rotation of the worm gear, enabling the entire stirring shaft disassembly mechanism to achieve automated control. Operators no longer need to manually and laboriously rotate the threaded rod, reducing labor intensity. At the same time, through the precise speed control of the motor, the stirring shaft can be smoothly and efficiently driven to move out or in from the kneading box, improving the convenience of equipment operation and work efficiency.
[0012] Furthermore, the bottom ends of the support plate are provided with two slide bars via support rods. The bottom outer surfaces of the two slide bars are slidably disposed within the middle inner wall of the two slide frames, and the two slide frames are disposed on the top of the base.
[0013] Through the above scheme, the sliding cooperation between the slider and the slide frame can play a good guiding and supporting role in the movement of the support plate, ensuring that the support plate remains stable during the movement of the stirring shaft, avoiding shaking or deviation, and allowing the stirring shaft to pass smoothly through the disassembly port, thereby improving the stability of the stirring shaft as it moves with the support plate.
[0014] Furthermore, a sealing strip is provided between the push plate and the kneading box, the outline of the sealing strip is adapted to the outline of the push plate, and the sealing strip is located on one side of the kneading box.
[0015] The above solution allows for the sealing of the push plate and the kneading box, preventing material leakage from gaps during the kneading process, ensuring that the kneading operation is carried out in a closed environment, and improving the kneading quality.
[0016] Furthermore, a support shaft is provided at the end of the stirring shaft away from the rotating shaft, and one end of the support shaft is inserted into the inner wall of the middle part of the bushing. The bushing is located on one side of the inner wall of the middle part of the kneading box.
[0017] The above solution provides a reliable support point for the end of the mixing shaft away from the rotating shaft, enabling the mixing shaft to maintain stable rotation during the kneading process. This reduces wear caused by shaft wobbling, improves the working reliability and service life of the mixing shaft, and ensures the uniformity and stability of the mixing effect during the kneading process.
[0018] Furthermore, a filling block is provided on one side of the push plate. The outline of the outer surface of the middle part of the filling block is adapted to the outline of the inner wall of the middle part of the disassembly port. The outer surface of the middle part of the filling block is inserted into the inner wall of the middle part of the disassembly port. The inner wall of the middle part of the filling block is rotatably connected to the outer surface of the middle part of the rotating shaft.
[0019] With the above solution, when the push plate is in close contact with one side of the kneading box, the filling block can fill the inside of the disassembly port, preventing a large amount of material from the kneading box from entering the disassembly port and failing to fully participate in the mixing process, thus improving the efficiency of mixing the material inside the kneading box.
[0020] Furthermore, a sealing groove is provided on one side edge of the push plate near the kneading box. The sealing groove is stepped on one side outer surface of the push plate, and the outline and position of the sealing groove are adapted to the outline and position of the sealing strip.
[0021] The above solution, by setting the sealing groove, can prevent the push plate from excessively squeezing the sealing strip, which would damage the sealing strip and improve the service life of the sealing strip.
[0022] Compared with the prior art, the technical solution of this application has the following beneficial effects:
[0023] This kneader, when the threaded rod rotates, can drive the support plate away from the kneading box by cooperating with the connecting plate. In turn, the support plate drives the push plate away from the kneading box, and the stirring shaft is driven through the disassembly port to be taken out from inside the kneading box. This achieves the effect of making it easy to remove the stirring shaft from the inside of the box, increasing the operating space when cleaning the inside of the box, avoiding cleaning dead corners, and making it easy to clean the residue attached to the outer surface of the stirring shaft. Attached Figure Description
[0024] Figure 1 This is a three-dimensional structural diagram of this application;
[0025] Figure 2 This is a schematic diagram of the front structure of this application;
[0026] Figure 3 This is a schematic diagram of the structure on the right side of this application;
[0027] Figure 4 This is a schematic diagram of the front sectional view of the structure of this application;
[0028] Figure 5 This is an exploded view of a partial structure of this application;
[0029] Figure 6 This is a schematic diagram showing the location of the sealing groove in this application;
[0030] Figure 7 This is a top sectional view of a partial structure of this application.
[0031] In the picture:
[0032] 1. Base; 2. Kneading box; 3. Stirring shaft; 4. Disassembly port; 5. Rotating shaft; 6. Push plate; 7. Filler block; 8. Sealing strip; 9. Sealing groove; 10. Gearbox; 11. First motor; 12. Support plate; 13. Connecting plate; 14. Threaded rod; 15. Worm gear; 16. Worm; 17. Second motor; 18. Sliding bar; 19. Sliding frame; 20. Support shaft; 21. Bushing. Detailed Implementation
[0033] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0034] Please see Figure 2 , Figure 5 and Figure 7 The kneading machine in this embodiment includes a base 1, a kneading box 2 on the top of the base 1, two stirring shafts 3 inside the kneading box 2, a disassembly port 4 on one side of the kneading box 2 for the stirring shafts 3 to pass through, a rotating shaft 5 at one end of the stirring shaft 3, the outer surface of the middle part of the rotating shaft 5 being rotatably mounted in the middle inner wall of the push plate 6, one end of the two rotating shafts 5 corresponding to the two stirring shafts 3 being mounted on two output shafts on one side of the gearbox 10, the input shaft of the gearbox 10 being mounted at one end of the output shaft of the first motor 11, the bottom of the push plate 6 being mounted on the top of the support plate 12 via a support rod, a connecting plate 13 being mounted on the bottom of the support plate 12, a threaded rod 14 being threadedly connected to the inner wall of the middle part of the connecting plate 13, both ends of the threaded rod 14 being rotatably mounted on the top of the base 1 via a fixing plate, the bottom of the gearbox 10 being mounted on the top of the support plate 12 via a support rod, and the first motor 11 being mounted on the top of the support plate 12 via a fixing block.
[0035] Please see Figure 1 , Figure 3 and Figure 4 A worm gear 15 is provided at the end of the threaded rod 14 away from the kneading box 2. The worm gear 15 meshes with the worm 16. The meshing of the worm gear 15 and the worm 16 enables precise control of the rotation of the threaded rod 14, providing better transmission stability and a self-locking function. After moving the support plate 12 and the stirring shaft 3 to the appropriate position, it can automatically lock to prevent the stirring shaft 3 from moving accidentally when not in operation, making it convenient for operators to clean and maintain the kneading box 2 and the stirring shaft 3.
[0036] Please see Figure 1 , Figure 3 and Figure 4 One end of the worm gear 16 is located at one end of the output shaft of the second motor 17, and the other end of the worm gear 16 is rotatably mounted on the top of the base 1 via a fixing plate. The second motor 17 is mounted on the top of the base 1 via a fixing block. The second motor 17 provides the power source for the rotation of the worm gear 16, enabling the entire disassembly mechanism of the stirring shaft 3 to be automatically controlled. Operators do not need to manually and laboriously rotate the threaded rod 14, reducing labor intensity. At the same time, through the precise speed control of the motor, the stirring shaft 3 can be smoothly and efficiently driven to move out or in from the kneading box 2, improving the convenience of equipment operation and work efficiency.
[0037] Please see Figure 1 , Figure 2 and Figure 3 The bottom ends of the support plate 12 are provided with two slide bars 18 by support rods. The bottom outer surfaces of the two slide bars 18 are slidably disposed in the middle inner wall of the two slide frames 19. The two slide frames 19 are disposed on the top of the base 1. The sliding cooperation between the slide bars 18 and the slide frames 19 can play a good guiding and supporting role for the movement of the support plate 12, ensuring that the support plate 12 remains stable during the movement of the stirring shaft 3, avoiding shaking or deviation, so that the stirring shaft 3 can pass smoothly through the disassembly port 4, and improving the stability of the stirring shaft 3 when it moves with the support plate 12.
[0038] Please see Figure 1 , Figure 2 and Figure 6 A sealing strip 8 is provided between the push plate 6 and the kneading box 2. The outline of the sealing strip 8 is adapted to the outline of the push plate 6. The sealing strip 8 is set on one side of the kneading box 2. The sealing strip 8 can seal the push plate 6 and the kneading box 2 to prevent material from leaking from the gap during the kneading process, ensuring that the kneading work is carried out in a closed environment and improving the kneading quality.
[0039] Please see Figure 4 and Figure 7 A support shaft 20 is provided at the end of the stirring shaft 3 away from the rotating shaft 5. One end of the support shaft 20 is inserted into the inner wall of the middle part of the bushing 21. The bushing 21 is located on one side of the inner wall of the middle part of the kneading box 2. The cooperation between the support shaft 20 and the bushing 21 provides a reliable support point for the end of the stirring shaft 3 away from the rotating shaft 5, so that the stirring shaft 3 can maintain stable rotation during the kneading process, reduce wear caused by shaft shaking, improve the working reliability and service life of the stirring shaft 3, and at the same time ensure the uniformity and stability of the stirring effect during the kneading process.
[0040] Please see Figure 4 and Figure 5 A filling block 7 is provided on one side of the push plate 6. The outline of the outer surface of the middle part of the filling block 7 is adapted to the outline of the inner wall of the middle part of the disassembly port 4. The outer surface of the middle part of the filling block 7 is inserted into the inner wall of the middle part of the disassembly port 4. The inner wall of the middle part of the filling block 7 is rotatably connected to the outer surface of the middle part of the rotating shaft 5. When the push plate 6 is close to one side of the kneading box 2, the filling block 7 can fill the inside of the disassembly port 4, avoiding the material of the kneading box 2 from entering the disassembly port 4 in large quantities and failing to fully participate in the mixing work, thus improving the working efficiency of mixing the material inside the kneading box 2.
[0041] Please see Figure 4 , Figure 5 and Figure 6A sealing groove 9 is provided on one side edge of the push plate 6 near the kneading box 2. The sealing groove 9 is set in a stepped shape with one side outer surface of the push plate 6. The outline and position of the sealing groove 9 are adapted to the outline and position of the sealing strip 8. The setting of the sealing groove 9 can prevent the push plate 6 from excessively squeezing the sealing strip 8, which would damage the sealing strip 8 and improve the service life of the sealing strip 8.
[0042] In this embodiment, the kneading machine, when the threaded rod 14 rotates, can drive the support plate 12 to gradually move away from the kneading box 2 in conjunction with the connecting plate 13. This causes the support plate 12 to drive the push plate 6 away from the kneading box 2, and drive the stirring shaft 3 to pass through the disassembly port 4 and be taken out from inside the kneading box 2. This achieves the effect of making it easy to remove the stirring shaft 3 from inside the box, increasing the operating space when cleaning the inside of the box, avoiding cleaning dead corners, and making it easy to clean the residue attached to the outer surface of the stirring shaft 3.
[0043] The working principle of the above embodiment is as follows: When mixing materials, the first motor 11 operates, driving the gearbox 10, which in turn drives the two stirring shafts 3 to rotate. The two stirring shafts 3 cooperate to mix the materials inside the kneading box 2. When it is necessary to clean the residue adhering to the inside of the kneading box 2 and the outer surface of the middle part of the stirring shafts 3, the second motor 17 operates, driving the worm gear 16 to rotate. The worm gear 16 drives the worm wheel 15 to rotate. When the worm wheel 15 rotates, it drives the threaded rod 14 to rotate. When the threaded rod 14 rotates, it cooperates with the connecting plate 13 to move the support plate 12, causing the support plate 12 to gradually move away from the kneading box 2. This causes the slide bar 18 to slide within the inner wall of the middle part of the slide frame 19. As the support plate 12 moves, it drives the push plate 6 to gradually move away from the kneading box 2. The stirring shaft 3 is moved, causing the support shaft 20 to be pulled out of the bushing 21. The push plate 6 moves gradually, causing the filling block 7 to be pulled out of the disassembly port 4. The stirring shaft 3 is then gradually removed from the kneading box 2 through the disassembly port 4, increasing the operating space for cleaning the kneading box 2. The outer surface of the middle part of the stirring shaft 3 is cleaned on the outside of the kneading box 2. After cleaning, the second motor 17 works, causing the threaded rod 14 to rotate and, in conjunction with the connecting plate 13, drive the support plate 12 to move gradually toward the kneading box 2. This causes the stirring shaft 3 to be inserted into the kneading box 2 from the disassembly port 4, and the support shaft 20 to be inserted into the bushing 21, until the push plate 6 is tightly pressed against one side of the kneading box 2. The sealing groove 9 then presses the sealing strip 8, sealing the push plate 6 and the kneading box 2 together.
[0044] 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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0045] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A kneading machine, comprising a base (1), characterized in that: The base (1) has a kneading box (2) on top. The kneading box (2) has two stirring shafts (3) inside. A disassembly port (4) is provided on one side of the kneading box (2) for the stirring shafts (3) to pass through. A rotating shaft (5) is provided at one end of the stirring shaft (3). The outer surface of the middle part of the rotating shaft (5) is rotatably mounted in the inner wall of the middle part of the push plate (6). One end of the two rotating shafts (5) corresponding to the two stirring shafts (3) is set on two output shafts on one side of the gearbox (10). The input shaft of the gearbox (10) is provided with The push plate (6) is placed at one end of the output shaft of the first motor (11). The bottom of the push plate (6) is set on the top of the support plate (12) through the support rod. The bottom of the support plate (12) is provided with a connecting plate (13). The inner wall of the middle part of the connecting plate (13) is threaded with a threaded rod (14). Both ends of the threaded rod (14) are rotatably set on the top of the base (1) through the fixing plate. The bottom of the gearbox (10) is set on the top of the support plate (12) through the support rod. The first motor (11) is set on the top of the support plate (12) through the fixing block.
2. The kneader according to claim 1, characterized in that: A worm wheel (15) is provided at the end of the threaded rod (14) away from the kneading box (2), and the worm wheel (15) meshes with the worm (16).
3. The kneader according to claim 2, characterized in that: One end of the worm (16) is located at one end of the output shaft of the second motor (17), and the other end of the worm (16) is rotatably located on the top of the base (1) via a fixing plate. The second motor (17) is located on the top of the base (1) via a fixing block.
4. The kneader according to claim 1, characterized in that: The bottom ends of the support plate (12) are provided with two slide bars (18) by support rods. The bottom outer surfaces of the two slide bars (18) are slidably disposed in the middle inner wall of the two slide frames (19). The two slide frames (19) are disposed on the top of the base (1).
5. The kneader according to claim 1, characterized in that: A sealing strip (8) is provided between the push plate (6) and the kneading box (2). The outline of the sealing strip (8) is adapted to the outline of the push plate (6). The sealing strip (8) is located on one side of the kneading box (2).
6. The kneader according to claim 1, characterized in that: The stirring shaft (3) is provided with a support shaft (20) at one end away from the rotating shaft (5). One end of the support shaft (20) is inserted into the inner wall of the middle part of the bushing (21). The bushing (21) is located on one side of the inner wall of the middle part of the kneading box (2).
7. The kneader according to claim 1, characterized in that: A filling block (7) is provided on one side of the push plate (6). The outline of the outer surface of the middle part of the filling block (7) is adapted to the outline of the inner wall of the middle part of the disassembly port (4). The outer surface of the middle part of the filling block (7) is inserted into the inner wall of the middle part of the disassembly port (4). The inner wall of the middle part of the filling block (7) is rotatably connected to the outer surface of the middle part of the rotating shaft (5).
8. The kneader according to claim 1, characterized in that: The push plate (6) has a sealing groove (9) on one side edge near the kneading box (2). The sealing groove (9) is set in a stepped shape with one side outer surface of the push plate (6). The opening outline and position of the sealing groove (9) are adapted to the outline and position of the sealing strip (8).