A wear-resistant feeding cylinder for internal mixer

Abstract

The present invention discloses a wear-resistant feeding barrel of an internal mixer, comprising a barrel, a limit mounting plate and wear-resistant strips; the inner cavity of the barrel forms a receiving space for an upper ejector bolt to move up and down, a mixing chamber of the internal mixer is arranged at the lower part of the barrel, and the receiving space is connected with the inner space of the mixing chamber; the upper ejector bolt moves up and down in the barrel to squeeze the material into the mixing chamber; wear-resistant strips covering the corners are embedded along the axial direction of the barrel at each corner of the inner cavity of the barrel, and each wear-resistant strip jointly defines a guide groove for limiting the movement of the upper ejector bolt; a countersunk hole for installing and limiting the feeding barrel is provided at the top of the mixing chamber, and a mounting hole penetrating the plate thickness is provided on the limit mounting plate, and the limit mounting plate is fixed around one end of the barrel near the mixing chamber, and the feeding barrel is vertically installed in the countersunk hole at the top of the mixing chamber. The guide groove formed by each wear-resistant strip can prevent the upper ejector bolt from impacting and scratching the wall surfaces of the inner cavity of the feeding barrel. The inner cavity size of the barrel is guaranteed by the limit of the countersunk hole, and a high-precision installation reference is provided for the barrel.

Description

Technical Field

[0001] The invention relates to the field of internal mixers, and in particular to a wear-resistant feeding barrel of an internal mixer. Background Art

[0002] As an important rubber mixing equipment, internal mixer is divided into pneumatic top plug and hydraulic top plug according to the power of top plug pressing rubber.

[0003] Since the upper ejector bolt moves up and down inside the feeding barrel at a fast speed (about 450mm / s), the gap between the upper ejector bolt and the feeding barrel is generally about 1mm. When the upper ejector bolt reaches the lower limit, it will swing and float up and down due to the reaction force of the rubber material. As a result, the surrounding areas of the feeding barrel and the upper ejector bolt collide and impact with each other, causing the inner wall of the feeding barrel to be damaged and the gap to become larger, which is easy to cause glue jams and abnormal noises. The inner surface of the feeding barrel is easily scratched by the up and down movement of the upper ejector bolt, reducing the service life of the entire barrel. Summary of the invention

[0004] The main purpose of the invention is to provide a wear-resistant feeding barrel for an internal mixer, aiming to solve the problem that the inner cavity surface of the existing feeding barrel is easily scratched by an upper ejector bolt.

[0005] To achieve the above-mentioned purpose, the wear-resistant feeding barrel of the internal mixer proposed in the present invention comprises a barrel, a limit mounting plate and a wear-resistant strip; the inner cavity of the barrel forms a receiving space for the upper push bolt to move up and down, the lower part of the barrel is provided with a mixing chamber of the internal mixer, and the receiving space is communicated with the inner space of the mixing chamber; a feeding hole is provided on one side of the barrel close to the mixing chamber, and the upper push bolt is used to move up and down in the receiving space to squeeze the material fed from the feeding hole into the mixing chamber; the inner cavity of the barrel The wear-resistant strip covering the corner is embedded at each corner along the axial direction of the barrel, and each of the wear-resistant strips jointly defines a guide groove for limiting the movement of the upper push bolt; a countersunk hole for installing a feeding barrel is provided on the top of the mixing chamber, and a mounting hole that penetrates the thickness of the plate is provided on the limiting mounting plate, and the limiting mounting plate is fixed on the four sides of the barrel near one end of the mixing chamber, and each limiting mounting plate is sequentially surrounded by a barrel mounting boss, and the feeding barrel is vertically installed in the countersunk hole on the top of the mixing chamber of the internal mixer through fasteners.

[0006] Preferably, the cylinder body includes a first wall panel, a second wall panel, a third wall panel and a fourth wall panel which are connected in sequence and together enclose the inner cavity of the cylinder body, the first wall panel and the third wall panel are arranged in parallel and symmetrically, the second wall panel and the fourth wall panel are vertically installed between the first wall panel and the third wall panel by fasteners, the second wall panel is installed on the side of the feeding hole of the internal mixer, and the fourth wall panel is installed on the side away from the feeding hole of the internal mixer.

[0007] Preferably, the cross-section of the wear-resistant strip is L-shaped, and the long arm section of the wear-resistant strip is provided with a screw hole that penetrates its arm thickness along the length direction, and the first wall panel and the third wall panel are provided with a through groove along the length direction of the board for contacting the side of the upper top bolt, and the bottom of the through groove protrudes toward the groove mouth of the through groove to form a step, and the steps are parallel and spaced apart from the two side walls of the through groove to form a groove for installing the wear-resistant strip; the distance between the top surface of the step close to the groove mouth and the grooved wall of the wall panel is equal to the height of the short arm section of the wear-resistant strip extending out of the long arm section, the distance between the bottom of the groove and the grooved wall of the wall panel is equal to the height of the short arm section of the wear-resistant strip, and the groove width of the groove is equal to the height of the long arm section of the wear-resistant strip; the bottom of the groove is provided with a hole for installing the wear-resistant strip that penetrates the thickness of the board along the length of the board, and each of the screw holes is respectively connected to one of the installation holes.

[0008] Preferably, the first wall panel and the third wall panel are respectively provided with a rectangular clearance gap on one side close to the countersunk hole at the top of the mixing chamber, the height of the clearance gap is greater than the depth of the countersunk hole, the first wall panel and the third wall panel are installed in the countersunk hole at one end corresponding to the clearance gap, and the width of the first wall panel and the third wall panel close to one end of the mixing chamber is respectively equal to the width of the countersunk hole.

[0009] Preferably, the wear-resistant strip is fixed in the groove by connecting the mounting hole and the screw hole with a screw, the screw rod of the screw does not exceed the long arm section of the wear-resistant strip for contacting the wall surface of the upper push bolt, and the wear-resistant strip forms inner and outer stoppers after installation.

[0010] Preferably, the second wall panel is provided with a feeding hole, and a feeding door of the internal mixer covers the feeding hole, and the feeding door is rotatably hinged to the bottom of the second wall panel corresponding to the feeding hole.

[0011] Preferably, the surfaces of the second wall panel and the fourth wall panel close to the inner cavity of the feeding barrel are parallel to the end surface of the outer stop formed by the wear-resistant strip.

[0012] Preferably, the thickness of the limiting mounting plate is greater than the depth of the countersunk hole at the top of the mixing chamber.

[0013] Preferably, the limiting mounting plate is vertically welded to the outer side of the first wall panel, the third wall panel, the second wall panel and the fourth wall panel facing away from the inner cavity of the cylinder, the width of the limiting mounting plate corresponding to the first wall panel and the third wall panel is equal to the width of the countersunk hole, and the length of the limiting mounting plate corresponding to the second wall panel and the fourth wall panel is equal to the width of the second wall panel and the fourth wall panel.

[0014] To achieve the above object, the present invention provides an internal mixer, comprising a mixing chamber and a wear-resistant feeding barrel of the internal mixer, wherein the mixing chamber is arranged at the lower part of the barrel body of the feeding barrel.

[0015] In the technical solution of the present invention, the wear-resistant strips are embedded in the corners of the inner cavity of the cylinder and cover the corners. The wear-resistant strips together define a guide groove that limits the movement of the upper push bolt, so as to prevent the upper push bolt from impacting and scratching the wall surfaces of the inner cavity of the feeding cylinder. A countersunk hole for limiting the installation of the feeding cylinder is provided on the top of the mixing chamber. The limiting mounting plate is fixed around the cylinder near one end of the mixing chamber. The limiting mounting plates are sequentially surrounded by a cylinder installation boss. The side walls of the cylinder installation boss are in contact with the inner wall of the countersunk hole. The inner cavity size of the cylinder is guaranteed by the limiting of the countersunk hole, providing a high-precision installation reference for the cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0017] Figure 1 This is a schematic diagram of the structure installed on the top of the mixing chamber according to one embodiment of the present invention.

[0018] Figure 2 It is a structural schematic diagram of an embodiment of the present invention.

[0019] Figure 3 for Figure 2 Schematic diagram of the structure of the wear-resistant strip.

[0020] Figure 4 for Figure 2 Front view of the first wall panel.

[0021] Figure 5 for Figure 2 A top view of the first wall panel.

[0022] Description of Figure Numbers:

[0023]

[0024] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0027] In addition, in the present invention, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0028] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0030] The invention provides a wear-resistant feeding barrel of an internal mixer.

[0031] Please refer to Figures 1 to 5The wear-resistant feeding barrel of the internal mixer comprises a barrel 1, a limit mounting plate 2 and a wear-resistant strip 3; the inner cavity of the barrel 1 forms a receiving space 10 for the upper push bolt 4 to move up and down, and the mixing chamber 5 of the internal mixer is arranged at the lower part of the barrel 1, and the receiving space 10 is communicated with the inner space of the mixing chamber 5; a feeding hole 6 is opened on one side of the barrel 1 close to the mixing chamber 5, and the upper push bolt 4 is used to move up and down in the receiving space 10 to squeeze the material fed from the feeding hole 6 into the mixing chamber 5; the inner cavity of the barrel 1 The wear-resistant strips 3 covering the corners are embedded at each corner along the axial direction of the barrel, and the wear-resistant strips together define a guide groove for limiting the movement of the upper push bolt; a countersunk hole 51 for limiting the installation of a feeding barrel is provided on the top of the mixing chamber, and a mounting hole that penetrates the thickness of the plate is provided on the limiting mounting plate 2, and the limiting mounting plate 2 is fixed to the four sides of the barrel 1 near one end of the mixing chamber 5, and each limiting mounting plate 2 is sequentially surrounded by a barrel installation boss, and the feeding barrel is vertically installed in the countersunk hole 51 on the top of the mixing chamber 5 of the internal mixer through fasteners.

[0032] Please refer to Figure 2 In the technical solution of the present invention, the wear-resistant strips 3 are embedded in the corners of the inner cavity of the barrel 1 and cover the corners. The wear-resistant strips together define a guide groove that limits the movement of the upper push bolt, so as to prevent the upper push bolt 4 from impacting and scratching the wall surfaces of the inner cavity of the feeding barrel. A countersunk hole 51 for limiting the installation of the feeding barrel is provided on the top of the mixing chamber 5. The limiting mounting plate 2 is fixed to the surrounding of the barrel 1 near one end of the mixing chamber 4. The side walls of the barrel installation boss are in contact with the inner wall of the countersunk hole 51. The inner cavity size of the barrel 1 is guaranteed by the limiting of the countersunk hole 51, providing a high-precision installation reference for the barrel 1.

[0033] Preferably, the cylinder 1 comprises a first wall panel 11, a second wall panel 12, a third wall panel 13 and a fourth wall panel 14 which are connected in sequence and enclosed together to form the inner cavity of the cylinder. The first wall panel 11 and the third wall panel 13 are arranged in parallel and symmetrically. The second wall panel 12 and the fourth wall panel 14 are vertically installed between the first wall panel 11 and the third wall panel 13 by screws 7 and pins (not shown). The second wall panel 12 is installed on the side corresponding to the feeding hole 6 of the internal mixer, and the fourth wall panel 14 is installed on the side away from the feeding hole 6 of the internal mixer. An opening for feeding is formed between the fourth wall panel 14 and the first wall panel 11 and the third wall panel 13, which can avoid splashing and waste of materials during the feeding process. The cylinder 1 is a modular type, and the disassembly process is convenient and reliable.

[0034] Please refer to Figure 4 and Figure 5, further, the cross section of the wear-resistant strip 3 is L-shaped, the long arm section of the wear-resistant strip 3 is provided with a screw hole 31 penetrating the thickness of the arm along the length direction, the first wall panel 11 and the third wall panel 13 are provided with a through groove 111 along the length direction of the board for contacting the side of the upper bolt 4, the bottom of the through groove protrudes toward the notch direction of the through groove to form a step 112, and the step is arranged parallel to the two side walls of the through groove and spaced apart to form a groove 113 for installing the wear-resistant strip; The distance between the top surface of the step 112 near the notch and the wall surface of the wallboard slot is equal to the height of the short arm section of the wear-resistant strip extending out of the long arm section, the distance between the bottom of the groove 113 and the wall surface of the wallboard slot is equal to the height of the short arm section of the wear-resistant strip, and the groove width of the groove 113 is equal to the height of the long arm section of the wear-resistant strip; the bottom of the groove 113 is provided with the wear-resistant strip installation hole 114 that penetrates the plate thickness along the length of the plate, and each of the screw holes 31 is respectively connected to one of the installation holes 114. The edges and corners of the through groove 111 are rounded to facilitate the installation of the wear-resistant strip 3. The material of the wear-resistant strip 3 is preferably a common wear-resistant metal material such as 16Mn matrix surfacing alloy, 38CrMoAl nitriding, 45 steel quenching and tempering plus surface electroplating. There can be multiple wear-resistant strips 3 installed in the groove 113, and the total length is equal to the length of the groove 113. The use of multiple wear-resistant strips can avoid deformation caused by excessive length of a single wear-resistant strip and improve the accuracy of the inner cavity size of the wear-resistant box.

[0035] Furthermore, the first wall panel 11 and the third wall panel 13 are respectively provided with a rectangular clearance gap 115 on one side close to the countersunk hole at the top of the mixing chamber 4, the height of the clearance gap is greater than the depth of the countersunk hole, the first wall panel 11 and the third wall panel 13 are installed in the countersunk hole at one end corresponding to the clearance gap 115, the width of the first wall panel 11 and the third wall panel 13 close to one end of the mixing chamber is respectively equal to the width of the countersunk hole, and the installation reference of the first wall panel 11 and the third wall panel 13 is ensured by the clearance gap. The first wall panel 11 and the third wall panel 13 are provided with a trapezoidal gap 116 with the bottom facing outward on the same side of the clearance gap 115 at one end away from the mixing chamber, and the trapezoidal gap 116 is used for the installation of the external conveyor belt.

[0036] Furthermore, the wear-resistant strip 3 is fixed in the groove 113 by connecting the mounting hole 114 and the screw hole 31 through a screw 8, the screw rod of the screw 8 does not exceed the long arm section of the wear-resistant strip for contacting the wall surface of the upper push bolt, and the wear-resistant strip 3 forms an inner and outer stop after installation. The screw hole 31 of the wear-resistant strip 3 is blocked by the screw 8 to ensure the sealing of the entire cylinder, and the inner and outer stop formed after installation is used to withstand the impact of the upper push bolt 4 and play a limiting role to avoid scratching the wall surface of the first wall panel 11 and the third wall panel 13 contacting the upper push bolt 4.

[0037] Please refer to Figure 1 and Figure 2 Furthermore, the second wall panel 12 is provided with a feeding hole 121, and the feeding door 9 of the internal mixer covers the feeding hole 121. The feeding door 9 is rotatably hinged to the bottom of the second wall panel 12 corresponding to the feeding hole 121. The feeding door 9 is located between the feeding openings of the first wall panel 11 and the third wall panel 13 to form an upward opening for feeding, which is convenient for adding materials and prevents splashing of materials during the feeding process.

[0038] Furthermore, the surfaces of the second wall panel 12 and the fourth wall panel 14 close to the inner cavity of the feeding barrel are parallel to the end surface of the outer stop formed by the wear-resistant strip 3, ensuring the installation distance between the second wall panel 12 and the fourth wall panel 14, thereby improving the dimensional accuracy of the inner cavity of the barrel.

[0039] Preferably, the thickness of the position-limiting mounting plate 2 is greater than the depth of the countersunk hole at the top of the mixing chamber 4 .

[0040] Specifically, the limit installation plate 2 is vertically welded to the outer side of the first wall panel 11, the third wall panel 13, the second wall panel 12 and the fourth wall panel 14 away from the inner cavity of the cylinder body 1, the width of the first wall panel 11 and the third wall panel 13 corresponding to the first limit installation plate 21 is equal to the width of the countersunk hole, and the length of the second wall panel 12 and the fourth wall panel 14 corresponding to the second limit installation plate 22 is equal to the width of the second wall panel 12 and the fourth wall panel 14 respectively. The two rounded corners away from the first wall panel 11 and the third wall panel 13 formed after the first limit installation plate 21 is installed avoid interference between the corners matching the countersunk hole during the installation process, which is convenient for the disassembly and assembly of the feeding barrel. At the same time, the limit installation plate 2 acts as a reinforcing plate to improve the strength of the feeding barrel.

[0041] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A wear-resistant feeding barrel for an internal mixer, characterized in that: The invention comprises a cylinder body, a limit mounting plate and a wear-resistant strip; the inner cavity of the cylinder body forms a receiving space for an upper push bolt to move up and down, a mixing chamber of an internal mixer is arranged at the lower part of the cylinder body, and the receiving space is connected with the inner space of the mixing chamber; a feeding hole is provided on a side of the cylinder body close to the mixing chamber, and the upper push bolt is used to move up and down in the receiving space to squeeze the material fed from the feeding hole into the mixing chamber; the wear-resistant strips covering the corners are embedded at each corner of the inner cavity of the cylinder body along the axial direction of the cylinder body, and each of the wear-resistant strips jointly defines a guide groove to limit the movement of the upper push bolt; a countersunk hole for installing a feeding barrel and limiting the position is provided on the top of the mixing chamber, and a mounting hole that penetrates the thickness of the plate is provided on the limit mounting plate, and the limit mounting plate is fixed around the cylinder body close to one end of the mixing chamber, and each limit mounting plate sequentially surrounds a cylinder body mounting boss, and the feeding barrel is vertically installed in the countersunk hole on the top of the mixing chamber of the internal mixer through fasteners; The cylinder comprises a first wall panel, a second wall panel, a third wall panel and a fourth wall panel which are connected in sequence and enclose together to form the inner cavity of the cylinder, the first wall panel and the third wall panel are arranged in parallel and symmetrically, the second wall panel and the fourth wall panel are vertically installed between the first wall panel and the third wall panel by fasteners, the second wall panel is installed on the side of the feeding hole of the internal mixer, and the fourth wall panel is installed on the side away from the feeding hole of the internal mixer; The cross section of the wear-resistant strip is L-shaped, and the long arm section of the wear-resistant strip is provided with a screw hole penetrating its arm thickness along the length direction, and the first wall panel and the third wall panel are provided with a through groove along the board length direction for contacting the side of the upper top bolt, and the bottom of the through groove protrudes toward the notch direction of the through groove to form a step, and the steps are respectively arranged in parallel and spaced relation with the two side walls of the through groove to form a groove for installing the wear-resistant strip; the distance between the top surface of the step close to the notch and the wall surface of the wall panel slot is equal to the height of the short arm section of the wear-resistant strip extending out of the long arm section, the distance between the bottom of the groove and the wall surface of the wall panel slot is equal to the height of the short arm section of the wear-resistant strip, and the groove width of the groove is equal to the height of the long arm section of the wear-resistant strip; the bottom of the groove is provided with a hole for installing the wear-resistant strip penetrating the thickness of the board along the board length, and each of the screw holes is respectively communicated with one of the installation holes; All corners of the through groove are rounded; There are a plurality of wear strips installed in the groove, the total length of which is equal to the length of the groove; Each side wall of the cylinder mounting boss contacts the inner wall of the countersunk hole, and the inner cavity size of the cylinder is guaranteed by the position limiting of the countersunk hole, providing a high-precision mounting reference for the cylinder; A rectangular clearance gap is respectively formed on one side of the first wall panel and the third wall panel near the countersunk hole at the top of the mixing chamber, the height of the clearance gap is greater than the depth of the countersunk hole, the first wall panel and the third wall panel are installed in the countersunk hole at one end corresponding to the clearance gap, and the width of the first wall panel and the third wall panel at one end near the mixing chamber is respectively equal to the width of the countersunk hole; The wear-resistant strip is fixed in the groove by connecting the mounting hole and the screw hole with a screw, the screw rod of the screw does not exceed the long arm section of the wear-resistant strip for contacting the wall surface of the upper push bolt, and the wear-resistant strip forms inner and outer stoppers after installation; The first wall panel and the third wall panel are provided with a trapezoidal notch with the bottom edge facing outward on the same side of the end away from the mixing chamber corresponding to the clearance notch, and the trapezoidal notch is used for installing an external conveying belt.

2. The wear-resistant feeding barrel of the internal mixer according to claim 1, characterized in that: The second wall panel is provided with a feeding hole, and the feeding door of the internal mixer is provided with the feeding hole, and the feeding door is rotatably hinged to the bottom of the second wall panel corresponding to the feeding hole.

3. The wear-resistant feeding cylinder of the internal mixer according to claim 1, characterized in that: The surfaces of the second wall panel and the fourth wall panel close to the inner cavity of the feeding barrel are parallel to the end surface of the outer stop formed by the wear-resistant strip.

4. The wear-resistant feeding barrel of the internal mixer according to claim 1, characterized in that: The thickness of the position-limiting mounting plate is greater than the depth of the countersunk hole at the top of the mixing chamber.

5. The wear-resistant feeding barrel of the internal mixer according to claim 1, characterized in that: The limiting mounting plate is vertically welded to the outer side of the first wall panel, the third wall panel, the second wall panel and the fourth wall panel facing away from the inner cavity of the cylinder. The width of the limiting mounting plate corresponding to the first wall panel and the third wall panel is equal to the width of the countersunk hole, and the length of the limiting mounting plate corresponding to the second wall panel and the fourth wall panel is equal to the width of the second wall panel and the fourth wall panel.

6. An internal mixer, characterized in that: The invention comprises a mixing chamber and a wear-resistant feeding barrel of an internal mixer as claimed in any one of claims 1 to 5, wherein the mixing chamber is arranged at the lower part of the barrel body of the feeding barrel.

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