Automatic batching equipment for rubber crushing

Abstract

The invention provides automatic batching equipment for rubber crushing, which comprises a crushing assembly arranged in the automatic batching equipment and driven by a driving system, the crushing assembly comprises a first crushing and tearing shaft and a second crushing and tearing shaft, a first serrated knife is arranged on the first crushing and tearing shaft, and a second serrated knife is arranged on the second crushing and tearing shaft. A second serrated knife is arranged on the second crushing and tearing shaft, a plurality of forward tearing teeth which are uniformly distributed in the circumferential direction of the second serrated knife are arranged on the second serrated knife, and a plurality of forward glue feeding teeth and reverse tearing teeth are arranged on the first serrated knife. The production efficiency is greatly improved, and the production efficiency is improved by 15%-17%. By additionally arranging the crushing assembly, forward rubber feeding teeth and reverse tearing teeth of the crushing assembly are utilized, and forward tearing teeth are matched, strip-shaped tearing of rubber raw materials is achieved, the torn strip-shaped rubber raw materials are further cut into small blocks by a cutting knife, then subsequent machining is facilitated, the service life of equipment is prolonged, and the maintenance cost is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of rubber crushing, and in particular relates to automatic batching equipment for rubber crushing. Background Art

[0002] In the rubber mixing industry, there is a lack of professional rubber cutting equipment when mixing rubber compounds, and most of the rubber compounds are crushed by tearing machines.

[0003] Since rubber has very good elasticity, it is mainly composed of long-chain polymers, has low rigidity and high elongation, and can undergo significant elastic deformation when subjected to force without breaking easily. As a result, the tearing machine can only squeeze the rubber into blocks, and then the staff will cut the rubber into segments, and put the cut rubber blocks on the belt scale for weighing, and then enter the weighing into the batching system, and feed the materials to the internal mixer to start mixing rubber.

[0004] However, the weighed rubber blocks are heavy and large in size. After being put into the internal mixer, it takes 20-30 seconds to break them up through the internal mixer rotor, which accounts for 15%-17% of the efficiency of the entire production line, reducing work efficiency. In addition, they cannot be weighed automatically. The large rubber breaking process has a greater impact on the main equipment internal mixer, which has an adverse effect on the service life and maintenance cost of the equipment.

[0005] In view of this, how to solve the defects existing in the above technical solutions has become one of the problems to be solved urgently in the field of rubber crushing technology. Summary of the invention

[0006] In view of the problems existing in the background technology, the present invention provides an automatic batching device for rubber crushing, comprising a rubber block conveying device and a rubber block placed on the rubber block conveying device, a crusher body is arranged below the outlet end of the rubber block conveying device, and a crushing assembly is arranged in the crusher body and is driven by a driving system.

[0007] The driving system comprises a first motor and a first reducer, and the driving end of the first reducer is connected to the first crushing and tearing shaft through a bearing assembly.

[0008] The driving system further comprises a second motor and a second reducer, and the driving end of the second reducer is connected to the second crushing and tearing shaft through a bearing assembly, and the first motor and the second motor are both provided with a frequency converter, the first crushing and tearing shaft is provided with a first toothed cutter, and the first toothed cutter and the first crushing and tearing shaft are detachably connected; the second crushing and tearing shaft is provided with a second toothed cutter, and the second toothed cutter and the second crushing and tearing shaft are detachably connected, the second toothed cutter is provided with a plurality of forward tearing teeth uniformly distributed along the circumference thereof, the first toothed cutter is provided with a plurality of forward glue feeding teeth and reverse tearing teeth, and the forward glue feeding teeth and the reverse tearing teeth are integrated;

[0009] The automatic batching equipment is provided with a blanking port, and at the outlet end of the blanking port away from the crushing assembly, a cross-cutting assembly for cutting the crushed rubber material is provided.

[0010] Optionally, a plurality of the forward rubber-feeding teeth and a plurality of the reverse tearing teeth are arranged on the first crushing and tearing shaft in a staggered manner, and the plurality of the forward rubber-feeding teeth and the plurality of the reverse tearing teeth are respectively arranged at different spiral positions on the second crushing and tearing shaft, so as to form a structure of staggered and spaced distribution.

[0011] Optionally, when in the working state, the reverse tearing teeth and the forward tearing teeth are arranged in a staggered manner.

[0012] Optionally, the forward rubber-feeding tooth includes a first resisting surface and a second resisting surface;

[0013] The reverse tearing tooth includes an outer side surface and an inner side surface;

[0014] The first resisting surface and the second resisting surface continuously extend and intersect to form the tip of the forward rubber-feeding tooth, and the included angle B at the tip of the forward rubber-feeding tooth is 15°-75°;

[0015] The first resisting surface and the inner side surface continuously extend and intersect to form an included angle R, and the included angle R is 100°-175°;

[0016] The outer side surface and the inner side surface continuously extend and intersect to form the tip of the reverse tearing tooth, and the included angle M at the tip of the reverse tearing tooth is 15°-75°.

[0017] Optionally, the forward tearing tooth includes a first cutting surface and a second cutting surface, and the first cutting surface and the second cutting surface continuously extend and intersect to form the tip of the forward tearing tooth, and the included angle at the tip of the forward tearing tooth is a, and a is 15°-75°.

[0018] Optionally, the gap between the tip of the forward rubber-feeding tooth and the tip of the forward tearing tooth is D, and the size range of D is 0.1-0.5 mm.

[0019] Optionally, the cross-cutting assembly includes a drive system, the drive shaft of the drive system is connected to a drive disk through a coupling, the drive disk is connected to a drive link through a first connecting member, and the drive link is connected to a cutting knife through a second connecting member.

[0020] Optionally, the drive disk, the first connecting member, the drive link, the second connecting member and the cutting knife form a crank-rocker mechanism;

[0021] The distance between the center of the driving disk and the center of the driving connecting rod near the driving disk is 150 mm. One end of the cutting knife is 300 mm long, and the other end of the cutting knife is 240 mm long.

[0022] The cross-section of the cutting knife has an inclined end face and a transverse end face. The inclined end face intersects with the transverse end face, and the intersecting end is recessed, making it wavy as a whole.

[0023] There is an included angle R between the inclined end face and the transverse end face. The included angle R is 77°, and the length L1 of the inclined end face and the length L2 of the transverse end face are 4.3 / 1.

[0024] Optionally, a feeding conveyor device is arranged below the cutting knife, and the feeding conveyor device adopts a conveyor belt driven by a servo motor with frequency conversion. The cut small rubber blocks are conveyed to the feeding and conveying device through the feeding conveyor device, and the feeding and conveying device adopts a conveyor belt driven by a servo motor with frequency conversion; a belt scale is arranged on the frame of the feeding and conveying device, and the belt scale includes multiple groups of gravity sensors. The belt scale adopts a belt scale driven by frequency conversion, and the belt scale is located below the conveyor belt of the feeding conveyor device.

[0025] In summary, the beneficial effects of the present invention are as follows:

[0026] (1) By adding a feeding and conveying device with a belt scale, the present invention can realize automatic weighing during the rubber mixing process.

[0027] (2) The present invention greatly improves the production efficiency, and the production efficiency is increased by 15%-17%. By adding a crushing component, using the forward feeding teeth and the reverse tearing teeth of the crushing component, and cooperating with the forward tearing teeth, the rubber raw material is shredded into strips, and the rubber raw material shredded into strips is further cut into small pieces by the cutting knife, which is convenient for subsequent processing, improves the service life of the equipment, and reduces the maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of an automatic batching equipment for rubber crushing according to an embodiment of the present invention;

[0029] Figure 2 It is another direction schematic diagram of the overall structure of an automatic batching equipment for rubber crushing according to an embodiment of the present invention;

[0030] Figure 3 For the present invention Figure 1 Partial structure enlarged view;

[0031] Figure 4 It is a schematic diagram of the overall structure of an automatic batching equipment for rubber crushing according to an embodiment of the present invention;

[0032] Figure 5 This is the front view of the overall structure of an embodiment of the automatic batching device for rubber crushing of the present invention;

[0033] Figure 6 This is the top view of the overall structure of an embodiment of the automatic batching device for rubber crushing of the present invention.

[0034] Reference numerals:

[0035] 1. Crusher main body; 2. Driving connecting rod; 3. Driving system; 4. Cutting knife; 5. Feeding port; 6. First crushing and tearing shaft; 7. Second crushing and tearing shaft; 8. Driving disc; 9. Forward rubber feeding teeth; 091. First resisting surface; 093. Second resisting surface; 10. Reverse tearing teeth; 101. Outer side surface; 102. Inner side surface; 11. First tooth knife; 12. Second tooth knife; 13. Forward tearing teeth; 131. First knife surface; 132. Second knife surface; 133. Tip of forward tearing teeth; 14. First connecting piece; 15. Second connecting piece; 16. Rubber block; 17. Rubber block conveying device; 18. Feeding conveying device; 19. Gravity sensor; 20. Feeding conveying device; 21. Belt scale; 23. Automatic batching device; 24. First motor; 25. First speed reducer; 26. Second speed reducer; 27. Second motor. Detailed implementation manners

[0036] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Although the exemplary embodiments are disclosed in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present invention and to be able to convey the concept of the present invention completely to those skilled in the art.

[0037] In the description of this specification, the description of reference terms such as "certain embodiments", "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0038] In the present invention, the terms "first", "second", and "third" are only used for descriptive purposes and should not be construed as indicating or implying relative importance; the term "plurality" means two or more, unless otherwise clearly defined. Terms such as "installed", "connected", "joined", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "joined" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] The present invention is mainly applied to the rubber mixing industry.

[0040] As Figures 1-6 shown, this embodiment provides an automatic batching device 1 for rubber crushing, including a rubber block conveying device 17 and rubber blocks 16 placed on the rubber block conveying device 17. Below the outlet end of the rubber block conveying device 17, there is a crusher main body 1, and a crushing assembly is provided inside the crusher main body 1 and is driven by a drive system.

[0041] The drive system includes a first motor 24 and a first speed reducer 25, and the drive end of the first speed reducer 25 is connected to a first crushing and tearing shaft 6 through a bearing assembly.

[0042] The drive system further includes a second motor 27 and a second speed reducer 26, and the drive end of the second speed reducer 26 is connected to a second crushing and tearing shaft 7 through a bearing assembly. Frequency converters are provided on both the first motor 24 and the second motor 27. By adjusting the frequency and speed of the motors through the frequency converters, the speeds of the first crushing and tearing shaft 6 and the second crushing and tearing shaft 7 are adjusted; the crushing assembly includes the first crushing and tearing shaft 6 and the second crushing and tearing shaft 7, and

[0043] a first toothed knife 11 is provided on the first crushing and tearing shaft 6, and the first toothed knife 11 is detachably connected to the first crushing and tearing shaft 6; a second toothed knife 12 is provided on the second crushing and tearing shaft 7, and the second toothed knife 12 is detachably connected to the second crushing and tearing shaft 7.

[0044] Further, a plurality of forward rubber feeding teeth 9 and reverse tearing teeth 10 are provided on the first toothed knife 11, and the forward rubber feeding teeth 9 and the reverse tearing teeth 10 are integrally provided.

[0045] Further, a plurality of the forward rubber feeding teeth 9 and a plurality of the reverse tearing teeth 10 are arranged in an alternating manner on the first crushing and tearing shaft 6, and a plurality of the forward rubber feeding teeth 9 and a plurality of the reverse tearing teeth 10 are respectively arranged at different helical positions on the second crushing and tearing shaft 6, so as to form a structure of alternating and spaced distribution.

[0046] The radial linear velocity of the reverse tearing tooth cutter is 0 - 5000 mm / min (speed variation is achieved through a frequency converter and a servo motor);

[0047] The radial linear velocity of the forward tearing tooth cutter is 0 - 5000 mm / min (speed variation is achieved through a frequency converter and a servo motor).

[0048] Further, a plurality of forward tearing teeth 13 are arranged on the second tooth cutter 12 and are evenly distributed along its circumferential direction.

[0049] Further, when in the working state, the reverse tearing teeth 10 and the forward tearing teeth 13 are arranged alternately.

[0050] As Figure 3 shown, the forward glue-feeding tooth 9 includes a first resisting surface 091 and a second resisting surface 093;

[0051] The reverse tearing tooth 10 includes an outer side surface 101 and an inner side surface 102;

[0052] The first resisting surface 091 and the second resisting surface 093 continuously extend and intersect to form the tip of the forward glue-feeding tooth, and the angle B at the tip of the forward glue-feeding tooth is 15° - 75°, preferably 47°;

[0053] The first resisting surface 091 and the inner side surface 102 continuously extend and intersect to form an angle R, and the angle R is 100° - 175°, preferably 154°;

[0054] The outer side surface 101 and the inner side surface 102 continuously extend and intersect to form the tip of the reverse tearing tooth, and the angle M at the tip of the reverse tearing tooth is 15° - 75°, preferably 47°.

[0055] Further, the forward tearing tooth 13 includes a first cutting surface 131 and a second cutting surface 132, and the first cutting surface 131 and the second cutting surface 132 continuously extend and intersect to form the tip 133 of the forward tearing tooth, and the angle at the tip 133 of the forward tearing tooth is a, and a is 15° - 75°, preferably 47°.

[0056] Further, the gap between the tip of the forward glue-feeding tooth and the tip of the forward tearing tooth is D, and the size range of D is 0.1 - 0.5 mm.

[0057] When the material is put into the automatic batching equipment 1 through the feeding port, at this time, the first toothed knife 11 rotates along the direction v. When the tip of the forward feeding tooth touches the material, a driving force is generated on the material along the rotating direction of the direction V to push the material. At the same time, at this time, the forward tearing tooth 13 rotates along the direction x to generate a driving force on the opposite side of the material to push the material, realizing feeding; at this time, the tip of the forward feeding tooth continuously advances the material, and the reverse tearing tooth 101 rotates along with the rotation of the first crushing and tearing shaft 6. When the tip of the reverse tearing tooth inserts into the material and throws it up, and due to the inconsistent speeds of the two groups of crushing and tearing shafts (one fast and one slow), the tip 133 of the forward tearing tooth that rotates next is inserted. At this time, the material is subjected to forces in two opposite directions, and thus the material can be effectively torn apart.

[0058] In this embodiment, through multiple simulation experiments, it can be obtained that when the angle B at the tip of the forward feeding tooth is, the angle R is 154°, the angle M at the tip of the reverse tearing tooth is 47°, and the tip 133a of the forward tearing tooth is 47°, the thrust and shear force borne by the material are the largest at this time, and large pieces of rubber blocks can be easily torn into small pieces.

[0059] As Figure 1 shown, the automatic batching equipment 1 is provided with a discharging port 5, and a cross-cutting assembly for cutting the crushed rubber material is provided at the outlet end of the discharging port 5 away from the crushing assembly;

[0060] The cross-cutting assembly includes a driving system 3. The driving system 3 is preferably a servo motor, and the driving shaft of the driving system 3 is connected to a driving disk 8 through a coupling. The driving disk 8 is connected to a driving link 2 through a first connecting member 14, and the driving link 2 is connected to a cutting knife 4 through a second connecting member 15;

[0061] The driving disk 8, the first connecting member 14, the driving link 2, the second connecting member 15 and the cutting knife 4 form a crank-rocker mechanism;

[0062] The distance between the center of the driving disk 8 and the center of the driving link 2 near the driving disk is 150 mm. The length of one end of the cutting knife 4 is 300 mm, and the length of the other end of the cutting knife 4 is 240 mm.

[0063] The cutting frequency of the cutting knife is 0 - 100 times / min (variable speed is achieved through a frequency converter and a servo motor);

[0064] The cross-section of the cutting knife 4 has an inclined end face and a transverse end face, which intersect with the transverse end face, and the intersecting end is recessed, making its overall shape wavy. There is an included angle R between the inclined end face and the transverse end face, and the included angle R is 77°. The length L1 of the inclined end face and the length L2 of the transverse end face are 4.3 / 1. For example, the length L1 of the inclined end face is 73.1 mm, and the length L2 of the transverse end face is 17 mm;

[0065] When the included angle R is 77°, the contact angle between the cutting edge of the tool and the object to be cut is more appropriate, which helps to reduce the cutting resistance during cutting, facilitates the tool to enter the rubber block more smoothly, and thus facilitates stable cutting, thereby improving the cutting efficiency.

[0066] In this embodiment, the driving drive 3 is started, and the driving disk 8 is driven to rotate through the driving system 3, and then the cutting knife 4 is driven to perform a reciprocating linear motion along the X direction.

[0067] In this embodiment, the rubber block after being broken by the crushing component is output through the feeding port 5. When the material is output, it is cut into small rubber blocks by the cutting knife 4;

[0068] During application, if the radial linear velocity of the reverse tearing tooth knife is 1000 mm / min; the forward tearing tooth knife is 2000 mm / min, the rubber block can be torn into rubber strips; the rubber strip discharging speed is 1 m / min (the speed control is realized by the frequency converter respectively);

[0069] The cutting knife controls the servo motor through the frequency converter to realize a cutting frequency of 100 times / min

[0070] The length of the cut rubber block = 1000 mm / 100 times = 10 mm.

[0071] Furthermore, a feeding conveyor device 18 is arranged below the cutting knife 4, and the feeding conveyor device 18 adopts a conveyor belt driven by a servo motor frequency converter. The cut small rubber blocks are conveyed to the feeding conveyor device 20 through the feeding conveyor device 18, and the feeding conveyor device 20 adopts a conveyor belt driven by a servo motor frequency converter; a belt scale 21 is arranged on the frame of the feeding conveyor device 20, and the belt scale 21 includes multiple groups of gravity sensors 19. The belt scale 21 is a belt scale driven by frequency conversion, and the belt scale is located below the conveyor belt of the feeding conveyor device 18.

[0072] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than restrictive. Although the present invention has been described in detail with reference to the embodiments, those of ordinary skill in the art should understand that any modification or equivalent replacement of the technical solutions of the present invention does not depart from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. Automatic batching equipment for rubber crushing, characterized in that: include: A rubber block conveying device and a rubber block placed on the rubber block conveying device, A crusher body is arranged below the outlet end of the rubber block conveying device. The crusher body is provided with a crushing assembly and is driven by a driving system. The driving system includes a first motor and a first reducer, wherein the driving end of the first reducer is connected to the first crushing and tearing shaft. The driving system further includes a second motor and a second reducer, and the driving end of the second reducer is connected to the second crushing and tearing shaft. The first motor and the second motor are both provided with a frequency converter. The first crushing and tearing shaft is provided with a first toothed cutter. The second crushing and tearing shaft is provided with a second toothed cutter. The second toothed cutter is provided with a plurality of positive tearing teeth evenly distributed along its circumference. The first toothed cutter is provided with a plurality of positive glue feeding teeth and reverse tearing teeth. The forward glue feeding teeth and the reverse tearing teeth are integrated; The automatic batching equipment is provided with a feeding port. A cross-cutting component for cutting the crushed rubber material is arranged at the outlet end of the feed opening far away from the crushing component.

2. The automatic batching equipment for rubber crushing according to claim 1, characterized in that: A plurality of the forward glue feeding teeth and a plurality of the reverse tearing teeth are arranged on the first crushing and tearing shaft in a staggered manner. A plurality of the forward glue feeding teeth and a plurality of the reverse tearing teeth are respectively arranged at different spiral line positions of the second crushing and tearing axis, so as to form a staggered and spaced distribution structure.

3. The automatic batching equipment for rubber crushing according to claim 1, characterized in that: When in working state, the reverse tearing teeth and the forward tearing teeth are arranged alternately.

4. The automatic batching equipment for rubber crushing according to claim 2, characterized in that: The positive glue feeding tooth comprises a first abutting surface and a second abutting surface; The reverse tearing tooth comprises an outer side and an inner side; The first abutting surface and the second abutting surface continuously extend and intersect to form a tooth tip of a positive glue feeding tooth, and an angle B at the tooth tip of the positive glue feeding tooth is 15°-75°; The first blocking surface and the inner side surface are continuously extended and intersect to form an angle R, and the angle R is 100°-175°; The outer side surface and the inner side surface are continuously extended and intersect to form a reverse tearing tooth tip, and the angle M at the reverse tearing tooth tip is 15°-75°.

5. The automatic batching equipment for rubber crushing according to claim 1, characterized in that: The positive tearing tooth comprises a first blade surface and a second blade surface, The first blade surface and the second blade surface continue to extend and intersect to form the positive tearing tooth tip. The angle at the tip of the positive tearing tooth is a, and a is 15°-75°.

6. The automatic batching equipment for rubber crushing according to claim 5, characterized in that: The gap between the tip of the positive glue feeding tooth and the tip of the positive tearing tooth is D, and the size of D is in the range of 0.1-0.5 mm.

7. The automatic batching equipment for rubber crushing according to claim 1, characterized in that: The cross-cutting assembly includes a drive system, The driving shaft of the driving system is connected to the driving disc, The driving disc is connected to the driving connecting rod via a first connecting member. The driving connecting rod is connected to the cutting knife through a second connecting member.

8. The automatic batching equipment for rubber crushing according to claim 7, characterized in that: The driving disc, the first connecting member, the driving connecting rod, the second connecting member and the cutting knife are combined to form a crank rocker mechanism; The distance between the center of the driving disc and the center of the driving connecting rod near the driving disc is 150 mm. The length of one end of the cutting knife is 300 mm, and the length of the other end of the cutting knife is 240 mm. The cross section of the cutting knife has an inclined end face and a transverse end face, the inclined end face intersects with the transverse end face, and the intersecting end is concave, so that the whole is arranged in a wave shape; An included angle R is formed between the inclined end face and the transverse end face, and the included angle R is 77°. The length L1 of the inclined end face and the length L2 of the transverse end face are 4.3 / 1.

9. The automatic batching equipment for rubber crushing according to claim 8, characterized in that: A feeding and conveying device is provided below the cutting knife. The feeding and conveying device adopts a conveyor belt driven by a servo motor with variable frequency. The cut small rubber blocks are transported to the feeding and conveying device through the feeding and conveying device. The feeding and conveying device adopts a conveyor belt driven by a servo motor with variable frequency; A belt scale is provided on the frame of the feeding and conveying device. The belt scale includes multiple groups of gravity sensors. The belt scale is located below the conveyor belt of the feeding and conveying device.

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