Preparation equipment for automobile ABS (Anti-lock Brake System) sealing washer

Abstract

The invention relates to the field of automobile sealing washer preparation, and particularly discloses automobile ABS sealing washer preparation equipment which is characterized in that an extrusion assembly periodically and intermittently extrudes a hollow cylindrical green body; the annular port is coaxially arranged at the blank extrusion end of the extrusion assembly, an annular notch is formed between the annular port and the extrusion assembly, and a heater is arranged on the port to heat the inner wall; the cutter assembly is arranged on the outer side of the extrusion end, a cutter of the cutter assembly extends into the annular notch, is assembled on the annular driving guide rail and is driven by the guide rail to move in the circumferential direction of the notch, and annular cutting of the blank is achieved to obtain a primary material of the sealing washer; the forming shell is coaxially arranged at the outer side end of the annular port, and the outer wall, extending into the port, of the forming shell and the inner wall of the outer side end of the port form a discharging port. The multiple extrusion columns are annularly arrayed on the inner side of the annular port and arranged in the axial direction, the outer walls of the extrusion columns and the inner wall of the port form an extrusion channel, a primary material of the sealing washer is subjected to extrusion forming through the channel, all the assemblies cooperate to complete the washer preparation process, and efficient and accurate forming of the ABS sealing washer is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of automobile sealing gasket preparation, in particular to a kind of automobile ABS sealing gasket preparation equipment. BACKGROUND

[0002] In the automobile industry, ABS (acrylonitrile-butadiene-styrene copolymer) sealing gasket as the core sealing element is widely adapted to brake system, fuel pipeline and engine assembly, and its performance directly determines the sealing reliability, chemical corrosion resistance and long-term durability. The mainstream production process of such element at present is mainly injection molding, but the supporting mold equipment and process system have significant shortcomings in production efficiency, molding precision and material adaptability, and the specific problems are as follows: The flow channel system design of single-cavity and simple multi-cavity mold has redundancy, resulting in waste of ABS raw materials; especially in the production scene of small sealing gaskets, the waste generated after flow channel cooling is difficult to recycle due to changes in physical properties, further exacerbating material loss. Although multi-cavity mold can improve productivity, it is easy to produce filling pressure difference due to uneven distribution of sprue, which further leads to product wall thickness deviation, and finally most of the finished products need to be trimmed again, which not only increases process cost but also reduces production efficiency. While improving productivity, the multi-cavity mold production equipment needs to manually complete key processes such as sealing gasket removal, demolding agent spraying and blank feeding, resulting in a long production pause in each production cycle, making it difficult to achieve continuous and efficient production. Especially in the production of small and simple O-shaped sealing rings, it is easy to cause low efficiency and waste of time in productivity.

[0003] And the existing automobile sealing strip adopts continuous extrusion, the extruder generates plate-shaped ABS blank, and then the inner and outer circles are cut through upper and lower mold hot pressing forming, which may cause large deviation of sealing ring inner diameter or outer diameter due to ABS melt cooling shrinkage in continuous extrusion cutting and cooling. SUMMARY

[0004] The purpose of the present application is to provide an automobile ABS sealing gasket preparation equipment to solve the problem of serious waste of existing mold in the process of preparing automobile sealing gasket, long production pause time and high raw material waste rate in the prior art.

[0005] To solve the above technical problems, the present application specifically provides the following technical solutions: An automobile ABS sealing gasket preparation equipment, comprising: An extrusion assembly for periodically and intermittently extruding a hollow cylindrical blank; A ring-shaped port coaxially arranged at an extrusion end of a blank of the extrusion assembly, the ring-shaped port and the extrusion end of the extrusion assembly form a ring-shaped cut; a heater is arranged on the ring-shaped port, the heater is used to heat the inner wall of the ring-shaped port to a target temperature; A cutter assembly is arranged outside the extrusion end, a cutter of the cutter assembly is arranged in the ring-shaped cut; A ring-shaped driving guide rail, the cutter assembly is arranged on the ring-shaped driving guide rail, the ring-shaped driving guide rail is used to drive the cutter assembly to move along the circumference of the ring-shaped cut, the cutter is used to cut the blank extruded from the extrusion end in a ring shape to obtain a sealing gasket preliminary material; A shaped shell is coaxially arranged at the outside end of the ring-shaped port, and the shaped shell enters the space between the outer wall of the ring-shaped port and the inner wall of the outside end of the ring-shaped port to form a discharge port; A plurality of extrusion columns are arranged in a ring-shaped array inside the ring-shaped port and along the axial direction of the ring-shaped port, and the extrusion channels are formed between the outer walls of the plurality of extrusion columns and the inner wall of the ring-shaped port; A rotary driving part, each extrusion column is connected to the output end of the rotary driving part, the rotary driving part is used to drive all the extrusion columns to rotate around the axial direction of the ring-shaped port in the ring-shaped port, so that the sealing gasket preliminary material is extruded from the extrusion channel.

[0006] As a preferred scheme of the present application, the extrusion assembly comprises an extrusion cavity, a cooling and shaping cavity is connected to the output end of the extrusion cavity, and the ring-shaped port is arranged at the position away from the output end of the extrusion cavity of the cooling and shaping cavity; The extrusion cavity performs a periodic intermittent extrusion action, specifically: An extrusion stage: in a first preset time period, the extrusion cavity moves in the direction of the extrusion channel set in the cooling and shaping cavity to the cooling and shaping cavity, so that the material forms a preset linear extrusion amount; An interval stage: after the extrusion stage is completed, the extrusion cavity enters a no-extrusion action state for a second preset time period; Cyclic execution: when the second preset time period ends, the extrusion cavity starts the extrusion stage again to perform the action cycle of the extrusion stage and the interval stage, and hollow cylindrical blanks are periodically and intermittently extruded at the ring-shaped cut.

[0007] As a preferred scheme of the present application, the cutter assembly comprises a cylindrical block, the cutter is arranged on the cylindrical block, the cutter body end of the cutter is installed on the cylindrical block through a rotating shaft, the rotating shaft is arranged along the axial direction of the cylindrical block, and the cutter tip enters the ring-shaped cut by rotating the rotating shaft.

[0008] As a preferred scheme of the present application, a guide groove is arranged on the inner side of the annular driving guide rail, and a rolling member is arranged in the guide groove, which is rotatably mounted on the side wall of the columnar block; The bottom of the columnar block is provided with a driving motor, the output end of the driving motor is connected with two transmission rods, the two transmission rods are arranged in a V shape, the transmission rods are located below the annular driving guide rail, and the transmission rods extend to the outer side of the annular driving guide rail along the radial direction of the annular driving guide rail, a friction roller is connected to the end of the transmission rod away from the columnar block, the friction roller contacts the outer side wall of the annular driving guide rail, the driving motor drives the friction roller to rotate through the transmission rod, thereby driving the columnar block to move circumferentially along the guide groove, and the cutter cuts the blank in the annular cutout.

[0009] As a preferred scheme of the present application, a radial adjustment assembly is arranged in the forming shell, the radial adjustment assembly comprises a fixed rod arranged axially along the annular port in the forming shell, a guide sleeve movably sleeved on the fixed rod, a driving portion arranged on the fixed rod and used for driving the guide sleeve to move axially along the fixed rod, a plurality of connecting arms uniformly connected in the circumferential direction of the pipe body of the guide sleeve, one end of each connecting arm being rotatably connected with the guide sleeve, and the other end of each connecting arm being connected with a plurality of extrusion columns one by one, and the connecting arm being rotatably connected with the middle of the inner side surface of the extrusion column; A moving guide groove radially along the annular port is arranged on the end surface of the forming shell facing the annular port, and a movement slot for mounting the connecting arm is arranged in the forming shell of the top wall of the moving guide groove; A guide block matched with the moving guide groove is arranged on the top of the extrusion column.

[0010] As a preferred scheme of the present application, the extrusion cavity comprises a mixing pipe body, a flared pipe is connected to the top of the mixing pipe body, and the top of the flared pipe is connected to the bottom of the cooling forming cavity; A tapered guide block is arranged in the inside of the flared pipe, the diameter of the tapered guide block gradually increases along the axial direction of the flared pipe, and an extrusion cavity is formed between the outer wall of the tapered guide block and the inner wall of the flared pipe; Wherein, a feeding port is arranged on the side wall of the mixing pipe body.

[0011] As a preferred scheme of the present application, the cooling forming cavity comprises a cooling pipe body, a cylinder is arranged in the inside of the cooling pipe body, the bottom of the cylinder is connected with the top of the tapered guide block, and a cooling forming cavity is formed between the outer side wall surface of the cylinder and the inner wall surface of the cooling pipe body; A spiral cooling pipe is arranged in the inner wall of the cooling pipe body, and two ends of the spiral cooling pipe form a cooling water inlet and a cooling water outlet on the surface of the cooling pipe body, respectively.

[0012] As a preferred scheme of the present application, a lifting driving element is arranged at the bottom of the mixing pipe body, and the bottom of the conical guide block is connected to the lifting driving element through a shaft.

[0013] As a preferred scheme of the present application, a piston disc is arranged in the mixing pipe body, a pressure cavity is formed between the bottom of the piston disc and the inner wall of the mixing pipe body, and an external air pressure device is connected to the pressure cavity.

[0014] As a preferred scheme of the present application, the extrusion column comprises a circular seat, a split nut is arranged at the bottom of the circular seat, a moving rod is arranged in the middle of the split nut, a pneumatic driving part is arranged in the interior of the circular seat, the top of the moving rod extends to the interior of the circular seat to connect the output end of the pneumatic driving part, and the pneumatic driving part is used to drive the moving rod to displace along the axial direction of the circular seat, so that the moving rod can open the split nut.

[0015] Compared with the prior art, the present application has the following beneficial effects: The present application can realize the direct preparation and molding of the sealing gasket by cutting the blank in the circumferential direction on the basis of the extrusion of the sealing gasket blank in the cooling molding cavity, and the preparation of the sealing gasket can be realized without stopping based on the continuous feeding and cutting of the cooling and molding, so that the device can avoid the large error in the mold preparation process and the subsequent correction, and the accuracy of the structure of the produced sealing gasket can be ensured. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only exemplary, and other implementation drawings can be obtained on the basis of the provided drawings without creative labor for those skilled in the art.

[0017] Figure 1 It is a schematic diagram of the overall structure of the embodiment of the present application. Figure 2 It is a schematic diagram of the overall structure of the embodiment of the present application. Figure 3 It is a schematic diagram of the structure of the cutter assembly of the embodiment of the present application. Figure 4This is a schematic diagram of the extrusion column according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the internal structure of the molded housing and radial adjustment assembly according to an embodiment of the present invention.

[0018] The labels in the diagram represent the following: 1-Annular port; 2-Annular notch; 3-Cutter assembly; 4-Annular drive rail; 5-Forming housing; 6-Extrusion column; 7-Extrusion cavity; 8-Cooling forming cavity; 9-Radial adjustment assembly; 10-Lifting drive assembly; 11-Shaft; 12-Piston disc; 13-Rotation drive unit; 31-Cylindrical block; 32-Rotation shaft; 41-Guide groove; 42-Rolling element; 43-Drive motor; 44-Transmission rod; 45-Friction roller; 61-Frustum base; 62-Split nut; 63-Actuating rod; 71-Mixing tube; 72-Flanged tube; 73-Conical guide block; 74-Feed inlet; 81-Cooling pipe body; 82-Cylinder; 83-Cooling water inlet; 84-Cooling water outlet; 91-Fixed rod; 92-Guide sleeve; 93-Drive unit; 94-Connecting arm; 95-Moving guide groove; 96-Action groove; 97-Guide block; 98-Spring; 99-Abutting rotating rod. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] like Figure 1 As shown, the present invention provides an apparatus for manufacturing automotive ABS gaskets, comprising: Extrusion assembly for periodically and intermittently extruding hollow cylindrical preforms; An annular port 1 is coaxially disposed at the extrusion end of the preform of the extrusion assembly, and an annular cut 2 is formed between the annular port 1 and the extrusion end of the extrusion assembly; a heater is disposed on the annular port 1, and the heater is used to heat the inner wall of the annular port 1 to the target temperature. The cutter assembly 3 is located on the outside of the extrusion end, and the cutter 33 of the cutter assembly 3 extends into the annular cut 2; The cutter assembly 3 is arranged on the annular driving guide rail 4, the annular driving guide rail 4 is used for driving the cutter assembly 3 to move along the circumference of the annular cutout 2, and the cutter 33 is used for annular cutting of the blank extruded by the extrusion end to obtain the sealing gasket preliminary material; The forming shell 5 is coaxially arranged at the outer side end of the annular port 1, and the forming shell 5 enters the discharge port 51 formed between the outer wall of the annular port 1 and the inner wall of the outer side end of the annular port 1; A plurality of extrusion columns 6 are arranged in an annular array inside the annular port 1 and along the axial direction of the annular port 1, and the extrusion channels are formed between the outer walls of the plurality of extrusion columns 6 and the inner wall of the annular port 1; The rotating driving part 13 is connected to the output end of each extrusion column 6, and the rotating driving part 13 is used for driving all the extrusion columns 6 to rotate around the axial direction of the annular port 1 in the annular port 1, so that the sealing gasket preliminary material is extruded and formed from the extrusion channel.

[0021] The purpose of the embodiment is to improve the forming precision and shape regularity of the sealing gasket The device guarantees the shape precision of the preliminary material and the finished product through coaxial design and precise cutting: Cutting precision guarantee: the annular port 1 and the extrusion assembly are coaxially arranged, the cutter 33 penetrates into the annular cutout 2 formed by the two, and the cutter moves along the circumference of the annular driving guide rail 4 to cut - this coaxial annular cutting method can ensure that the inner and outer circles of the cut sealing gasket preliminary material are coaxial, avoiding the eccentric cutting problem that is prone to occur in traditional cutting, and the annular flatness (cutting perpendicularity, inner and outer diameter tolerance) of the preliminary material is significantly improved; Temperature assisted forming: the heater of the annular port 1 heats the inner wall to a target temperature, which can make the ABS blank maintain appropriate softness (avoid low-temperature brittle fracture and high-temperature deformation) during cutting, ensure that the cut is burr-free and crack-free, and further improve the shape regularity of the preliminary material, laying a high-precision foundation for subsequent forming.

[0022] The rotating extrusion design solves the problem of uneven pressure in traditional extrusion forming, and ensures the consistency of the density of ABS material: a plurality of extrusion columns 6 are arranged in an annular array, and are driven by the rotating driving part 13 to rotate synchronously around the axial direction of the annular port 1, and the annular extrusion channel formed by the outer wall of the extrusion column 6 and the inner wall of the port can generate 360° uniform extrusion force on the preliminary material - compared with the fixed extrusion structure, the rotating extrusion column can make each region (inner and outer sides, circumferential direction) of the preliminary material bear the same extrusion strength, avoiding local looseness or over-tightness; such uniform extrusion can make the ABS material molecules arrange more closely and uniformly, and the density consistency of the finished product is high, and the corresponding physical properties (such as tensile strength, elastic modulus, and aging resistance) are more stable, avoiding sealing failure (such as local deformation and cracking after long-term use) caused by local performance difference. It guarantees the uniformity of product density and the stability of physical properties.

[0023] The device realizes the continuity of the extrusion-cutting-molding process, and has strong controllability of parameters, and is suitable for batch production: Process synergy: The extrusion assembly periodically extrudes the blank in an intermittent manner, and the cutting rhythm of the cutter assembly 3 can be matched with the extrusion period (intermittent extrusion corresponds to intermittent annular cutting). The initial material after cutting directly enters the extrusion channel for molding, without the need for intermediate material transfer, reducing the precision errors and efficiency losses caused by transfer, and ensuring the continuity of the production process; Batch stability: The target temperature of the heater, the rotation speed of the extrusion column, and the intermittent frequency of the extrusion assembly can be precisely controlled, and the cumulative error is avoided due to the coaxial design of each component. In batch production, the processing conditions (temperature, pressure, cutting accuracy) of each gasket are highly consistent, and the size tolerance (such as thickness, inner and outer diameter) and appearance quality (such as surface flatness) of the finished product are extremely small, and the scrap rate is significantly reduced. Optimizing production continuity and batch consistency.

[0024] For the processing characteristics of ABS material (need suitable temperature to avoid degradation / brittle fracture), the device design can accurately match its processing requirements: ABS material is sensitive to processing temperature (low temperature is easy to be brittle, high temperature is easy to be degraded), the heater of the annular port (1) can stabilize the inner wall temperature in the suitable processing interval of ABS (usually 180-220℃, adjusted according to the formula).

[0025] On the one hand, the heated inner wall can assist the blank to maintain a softened state when it comes into contact with the blank, facilitating subsequent extrusion molding (reducing molding resistance and avoiding material damage caused by forced extrusion); On the other hand, it avoids the residual internal stress of the blank after molding due to too low temperature (internal stress will cause deformation of the finished product in the later stage), or the degradation of ABS molecules due to too high temperature (degradation will reduce the strength and sealing performance of the material), ultimately ensuring that the performance of the finished product meets the standards. Improve the processing adaptability of ABS material and ensure product performance.

[0026] The extrusion assembly includes an extrusion cavity 7, and a cooling molding cavity 8 is connected to the output end of the extrusion cavity 7. An annular port 1 is provided at the output end of the cooling molding cavity 8 away from the extrusion cavity 7; The extrusion cavity 7 performs periodic intermittent extrusion action, specifically: Extrusion stage: within a first predetermined time period, the extrusion cavity 7 moves along the extrusion channel direction set in the cooling molding cavity 8 to the cooling molding cavity 8, so that the material forms a predetermined linear extrusion amount; Interval stage: after completing the extrusion stage, the extrusion cavity 7 enters a no-extrusion action state for a second predetermined time period; Cyclic execution: when the second predetermined time period ends, the extrusion cavity 7 starts the extrusion stage again, and the action cycle of the extrusion stage and the interval stage is performed, and the hollow cylindrical blank is periodically and intermittently extruded at the annular cutout 2.

[0027] The cutter assembly 3 comprises a cylindrical block 31, a cutter 33 is arranged on the cylindrical block 31, the cutter body end of the cutter 33 is installed on the cylindrical block 31 through a rotating shaft 32, the rotating shaft 32 is arranged along the axial direction of the cylindrical block 31, and the cutter tip of the cutter 33 is made to enter the annular cutting groove 2 by rotating the rotating shaft 32.

[0028] A guide groove 41 is arranged on the inner side of the annular driving guide rail 4, and a rolling member 42 is arranged in the guide groove 41, the rolling member 42 is rotatably installed on the side wall of the cylindrical block 31; The bottom of the cylindrical block 31 is provided with a driving motor 43, the output end of the driving motor 43 is connected with two transmission rod members 44, the two transmission rod members 44 are arranged in a V shape, the transmission rod members 44 are located below the annular driving guide rail 4, and the transmission rod members 44 extend to the outer side of the annular driving guide rail 4 along the radial direction of the annular driving guide rail 4, and the end of the transmission rod member 44 away from the cylindrical block 31 is connected with a friction roller 45.

[0029] The transmission rod member 44 is a worm gear transmission structure, the driving motor 43 is connected with the rotating shaft of the friction roller 45 through the worm gear transmission mode, and the transmission rod member 44 in the embodiment comprises a support structure (the support structure is fixedly connected with the shell of the driving motor 43), and the worm gear is arranged in the inside of the support.

[0030] The friction roller 45 contacts the outer side wall of the annular driving guide rail 4, the driving motor 43 drives the friction roller 45 to rotate through the transmission rod member 44, thereby driving the cylindrical block 31 to move circumferentially along the guide groove 41, and the cutter 33 cuts the blank in the annular cutting groove 2.

[0031] In the radial displacement adjustment action of the plurality of extrusion columns 6, a radial adjustment assembly 9 is arranged in the forming shell 5, the radial adjustment assembly 9 comprises a fixed rod 91 arranged in the forming shell 5 along the axial direction of the annular port 1, a guide sleeve 92 movably sleeved on the fixed rod 91, a driving part 93 arranged on the fixed rod 91 and driving the guide sleeve 92 to move along the axial direction of the fixed rod 91, a plurality of connecting arms 94 uniformly connected in the circumferential direction of the pipe body of the guide sleeve 92, one end of each connecting arm 94 being rotatably connected with the guide sleeve 92, the other end of each connecting arm 94 being correspondingly connected with the plurality of extrusion columns 6, and the connecting arm 94 being rotatably connected with the middle of the inner side surface of the extrusion column 6.

[0032] Specifically, a spring 98 is arranged at the bottom of the guide sleeve 92, and the bottom of the spring 98 is connected to abut against a rotating rod 99.

[0033] The fixed rod 91 is a hollow tube structure, a driving part 93 (specifically, a hydraulic cylinder or a pneumatic cylinder) is arranged in the fixed rod 91, and guide grooves (the same number as the number of the connecting arms 94 along the length direction of the fixed rod 91) penetrating into the hollow interior of the fixed rod 91 are arranged on the surface of the fixed rod 91. The output end of the driving part 93 is connected to the inner wall of the guide sleeve 92 through a connecting piece penetrating through the guide grooves, and then the guide sleeve 92 is fixedly connected.

[0034] The end surface of the forming shell 5 facing the annular port 1 is provided with a moving guide groove 95 along the radial direction of the annular port 1, and the top wall of the moving guide groove 95 is provided with a moving groove 96 in the forming shell 5 for mounting the connecting arm 94.

[0035] The top of the extrusion column 6 is provided with a guide block 97 matched with the moving guide groove 95, the guide block 97 is used to limit the extrusion column 6 in the moving guide groove 95, and the extrusion column 6 cannot be separated from the moving guide groove 95, and the guide block 97 can provide the radial displacement space of the extrusion column 6 in the annular port 1.

[0036] The extrusion cavity 7 in the embodiment includes a mixing pipe body 71, the top of the mixing pipe body 71 is connected with a flared pipe 72, and the top of the flared pipe 72 is connected with the bottom of a cooling forming cavity 8. A tapered guide block 73 is arranged in the interior of the flared pipe 72, the diameter of the tapered guide block 73 gradually increases along the axial direction of the flared pipe 72, and the extrusion cavity is formed between the outer wall of the tapered guide block 73 and the inner wall of the flared pipe 72. The side wall of the mixing pipe body 71 is provided with a feeding port 74.

[0037] The cooling forming cavity 8 in the embodiment includes a cooling pipe body 81, a cylindrical body 82 is arranged in the interior of the cooling pipe body 81, the bottom of the cylindrical body 82 is connected with the top of the tapered guide block 73, and the cooling forming cavity is formed between the outer side wall surface of the cylindrical body 82 and the inner wall surface of the cooling pipe body 81.

[0038] A spiral cooling pipe is arranged in the inner wall of the cooling pipe body 81, and the two ends of the spiral cooling pipe form a cooling water inlet 83 and a cooling water outlet 84 on the surface of the cooling pipe body 81, respectively.

[0039] A lifting driving part 10 is arranged at the bottom of the mixing pipe body 71, and the bottom of the tapered guide block 73 is connected with the lifting driving part 10 through a shaft rod 11.

[0040] A piston disc 12 is arranged in the mixing pipe body 71, a pressure cavity is formed between the bottom of the piston disc 12 and the inner wall of the mixing pipe body 71, and the pressure cavity is connected with an external pneumatic device.

[0041] In order to cool the cooling cavity 8, a spiral cooling pipe is arranged in the inner wall of the cooling pipe body 81, the two ends of the spiral cooling pipe form a cooling water inlet and a cooling water outlet on the surface of the cooling pipe body 81, and the specific structure of the spiral cooling pipe can be designed according to actual needs.

[0042] In this embodiment, in order to control the mixing and extrusion ratio of the material body, improve the cooling forming effect of the material body, and adjust the volume of the mixing cavity of the material body in the inner cavity of the mixing pipe body 71, a lifting driving assembly 10 is arranged at the bottom of the mixing pipe body 71, the bottom of the conical guide block 73 is connected to the lifting driving assembly 10 through a shaft rod 11, and the lifting driving assembly 10 is specifically a hydraulic cylinder or a pneumatic cylinder.

[0043] Specifically, during the process of cutting the blank into a sealing gasket, the cylinder 82 enters the flared pipe 72, at this time the cavity in the flared pipe 72 is compressed by the cylinder 82, and the material in the flared pipe 72 is extruded into the cooling forming cavity 8, thereby ensuring the forming quality of the blank in the cooling forming cavity 8.

[0044] When the blank is cut into a sealing gasket, at this time the material is fed through the feeding port, and the pressure of the material in the mixing pipe body 71 and the flared pipe 72 is controlled to be stable by the piston disc 12, while the lifting driving assembly 10 drives the shaft rod 11, the conical guide block 73 and the cylinder 82 to move upward as a whole, and the initial position of the cylinder 82 in the cooling pipe body 81 is restored, that is, the cylinder 82 is completely inserted into the cooling pipe body 81.

[0045] Further, in this embodiment, a piston disc 12 is arranged in the mixing pipe body 71, a pressure cavity is formed between the bottom of the piston disc 12 and the inner wall of the mixing pipe body 71, and an external air pressure device is connected to the pressure cavity, that is, in this embodiment, the extrusion pressure of the material in the extrusion cavity can be controlled by the position of the piston disc 12.

[0046] Of course, the extrusion distance in the extrusion cavity can also be controlled by the periodic reciprocating motion of the piston disc 12 in the axial direction of the shaft rod 11. Specifically, the piston disc 12 is sleeved on the shaft rod 11, and the piston disc 12 is sealingly and movably connected to the shaft rod 11. Of course, the circumferential edge of the piston disc 12 is also sealingly and movably connected to the inner wall of the mixing pipe body 71, and an air pressure cavity is formed between the lower part of the piston disc 12 and the inner wall of the mixing pipe body 71. The pressure in the air pressure cavity is controlled by connecting the air pressure cavity to an external air pressure device, so as to change the position of the piston disc 12 in the mixing pipe body 71.

[0047] Because, in the extrusion mixing and the thermal expansion and contraction of the material in the mixing process and the need to stop the extrusion periodically in the cutting process, the material pressure in the mixing tube 71 and the cooling tube 81 is unstable, which affects the forming quality of the final blank, therefore, the main purpose of the external air pressure device in the embodiment is to provide stable pressure cavity to the air pressure cavity or to keep the extrusion of the material in the mixing tube 71 stable.

[0048] The limit position of the external air supply device control piston disc 12 upward displacement does not exceed the lower part of the feeding port.

[0049] Further, in order to be able to extrude the cut sealing ring one by one, and separate the sealing ring cut by the cutter 33 from the position of the annular cutout 2, the extrusion column 6 of the embodiment includes a circular seat 61, a split nut 62 is arranged at the bottom of the circular seat 61, a moving rod 63 is arranged in the middle of the split nut 62, a pneumatic driving part is arranged inside the circular seat 61, the top of the moving rod 63 extends to the inside of the circular seat 61 and is connected to the output end of the pneumatic driving part, and the pneumatic driving part is used to drive the moving rod 63 to displace along the axial direction of the circular seat 61, so that the moving rod 63 opens the split nut 62.

[0050] Wherein, the plurality of pneumatic driving parts work synchronously or asynchronously, so that the moving rod 63 opens the corresponding split nut 62, which makes part of the bottom of the split nut 62 (the part of the split nut 62 after being opened, which faces the inner wall of the annular port 1) cut between the bottom of the cut sealing ring initial material and the part of the cooling forming cavity 8 extruded into the inner end of the annular cutout 2, so as to separate the cut sealing ring initial material and the part of the cooling forming cavity 8 extruded. Synchronous work is to cut the end of the split nut 62 through the synchronous contact with the cooling forming cavity 8, and then separate the cut sealing ring initial material by extrusion, while the plurality of extrusion columns 6 gradually extrude (the plurality of extrusion columns 6 synchronously approach the inner wall of the annular port 1), linear action, so that the sealing ring initial material is extruded and formed along the axial direction of the forming shell 5.

[0051] The heater of the inner wall of the annular port 1 increases linearly along the axial direction of the forming shell 5, and the temperature distribution is linearly increased. The sealing ring initial material separated in the annular cutout 2 has not started to be heated, and the texture of the sealing ring initial material is relatively hard, which is convenient for separation and extrusion, and the axial displacement of the cut "step by step" pushing the sealing ring initial material.

[0052] In order to match the circumferential movement of the cutting knife 33 driven by the cutting assembly 3 around the annular cutting slot 2, the initial material of the split nut 62 can be separated and the gasket can be cut. Asynchronous work can be carried out, the pneumatic drive part of the extrusion column 6 is sequentially pneumatic after cutting, and the circumferential rotation of multiple extrusion columns 6 is superimposed. This means that when the cutting knife 33 is cutting, it is always located between two adjacent extrusion columns 6.

[0053] Therefore, the circumferential rotation of the plurality of extrusion columns 6 is the same as the circumferential movement of the annular drive guide rail 4 driving the cutting knife, and in this state, the working of the driving action rod 63 driving the split nut 62 is driven.

[0054] Of course, the preparation device provided in the embodiment is a whole transverse device, so that the material body stacking caused by gravity after the gasket is formed can be avoided, and at this time, the product can be discharged (sleeved on the formed shell 5) by simply extruding the gasket after forming.

[0055] Of course, considering the rotation characteristics of the formed shell 5 and the extrusion column 6, the pneumatic drive part can be replaced by an electromagnetic switch structure, and the power supply is connected to the electromagnetic switch structure through an electric slip ring, and then the axial action of the driving action rod 63 is driven.

[0056] As shown in Figures 1 to 5 The whole formed by the formed shell 5, the radial adjustment assembly 9, and the plurality of extrusion columns 6 is fixed by the support arranged away from the end of the annular port 1, and the abutting rotating rod 99 connected by the fixed rod 91 of the radial adjustment assembly 9 is rotatably connected to the middle of the end of the cylindrical body 82 facing the annular port 1, so as to fix the radial adjustment assembly 9 (to set the whole preparation device horizontally), at this time, the outer wall of the formed shell 5 is equivalent to a collector of the gasket product, after collecting a target number of gaskets, a separation structure can be arranged to separate the gasket from the formed shell 5 (not shown in the figure, not designed in the application).

[0057] The above embodiments are only exemplary embodiments of the application and are not used to limit the application, and the protection scope of the application is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements to the application within the spirit and protection scope of the application, and such modifications or equivalent replacements are also regarded as falling within the protection scope of the application.

Claims

1. A manufacturing apparatus for automotive ABS sealing gaskets, characterized in that, include: Extrusion assembly for periodically and intermittently extruding hollow cylindrical preforms; An annular port (1) is coaxially disposed at the extrusion end of the preform of the extrusion assembly, and an annular cut (2) is formed between the annular port (1) and the extrusion end of the extrusion assembly; a heater is disposed on the annular port (1), and the heater is used to heat the inner wall of the annular port (1) to the target temperature; A cutter assembly (3) is disposed on the outside of the extrusion end, and the cutter (33) of the cutter assembly (3) extends into the annular cut (2); The ring drive rail (4) is provided with the cutter assembly (3) on the ring drive rail (4). The ring drive rail (4) is used to drive the cutter assembly (3) to move circumferentially along the ring cut (2). The cutter (33) is used to perform ring cutting on the extruded blank at the extrusion end to obtain the initial material of the sealing gasket. The molded housing (5) is coaxially disposed at the outer end of the annular port (1), and the molded housing (5) enters between the outer wall of the annular port (1) and the inner wall of the outer end of the annular port (1) to form a discharge port (51). Multiple extrusion columns (6) are arranged in a ring array inside the ring port (1) and along the axial direction of the ring port (1). An extrusion channel is formed between the outer wall of the multiple extrusion columns (6) and the inner wall of the ring port (1). The initial material of the sealing gasket is extruded from the extrusion channel. The rotary drive unit (13) is connected to the output end of each extrusion column (6). The rotary drive unit (13) is used to drive all the extrusion columns (6) to rotate around the axial displacement of the annular port (1) in the annular port (1), so that the initial material of the sealing gasket is extruded from the extrusion channel.

2. The automotive ABS sealing gasket manufacturing equipment according to claim 1, characterized in that, The extrusion assembly includes an extrusion cavity (7), a cooling and forming cavity (8) is connected to the output end of the extrusion cavity (7), and the annular port (1) is provided at the output end of the cooling and forming cavity (8) away from the extrusion cavity (7). The extrusion chamber (7) performs a periodic intermittent extrusion action, specifically: Extrusion stage: During the first preset time period, the extrusion cavity (7) moves into the cooling and forming cavity (8) along the extrusion channel direction set in the cooling and forming cavity (8) to form a preset linear extrusion amount of material; Interval stage: After the extrusion stage is completed, the extrusion cavity (7) enters a no-extrusion state for a second preset time period; Cyclic execution: When the second preset time period ends, the extrusion cavity (7) restarts the extrusion stage and performs the extrusion stage and interval stage action cycle, periodically and intermittently extruding the hollow cylindrical blank at the annular cut (2).

3. The automotive ABS sealing gasket manufacturing equipment according to claim 1, characterized in that, The cutting blade assembly (3) includes a cylindrical block (31), on which the cutting blade (33) is disposed. The blade end of the cutting blade (33) is mounted on the cylindrical block (31) via a rotating shaft (32). The rotating shaft (32) is arranged along the axial direction of the cylindrical block (31). By rotating the rotating shaft (32), the tip of the cutting blade (33) enters the annular cut (2).

4. The automotive ABS sealing gasket manufacturing equipment according to claim 1, characterized in that, A guide groove (41) is provided on the inner side of the annular drive rail (4), and a rolling element (42) is provided in the guide groove (41). The rolling element (42) is rotatably mounted on the side wall of the cylindrical block (31). A drive motor (43) is provided at the bottom of the cylindrical block (31). The output end of the drive motor (43) is connected to two transmission rods (44). The two transmission rods (44) are arranged in a V-shape. The transmission rods (44) are located below the annular drive rail (4) and extend radially along the annular drive rail (4) to the outside of the annular drive rail (4). A friction roller (45) is connected to the end of the transmission rod (44) away from the cylindrical block (31). The friction roller (45) contacts the outer wall of the annular drive rail (4). The drive motor (43) drives the friction roller (45) to rotate through the transmission rods (44), thereby driving the cylindrical block (31) to move circumferentially along the guide groove (41). The cutter (33) cuts the blank in the annular cut (2).

5. The automotive ABS sealing gasket manufacturing equipment according to claim 1, characterized in that, A radial adjustment assembly (9) is provided inside the molding shell (5). The radial adjustment assembly (9) includes a fixed rod (91) axially arranged in the molding shell (5) along the annular port (1). A guide sleeve (92) is movably fitted on the fixed rod (91). A driving part (93) is provided on the fixed rod (91) to drive the guide sleeve (92) to move axially along the fixed rod (91). Multiple connecting arms (94) are evenly connected around the tube body of the guide sleeve (92). One end of each connecting arm (94) is rotatably connected to the guide sleeve (92), and the other end of each connecting arm (94) is connected to multiple extrusion columns (6) one by one. The connecting arm (94) is rotatably connected to the middle of the inner surface of the extrusion column (6). A movable guide groove (95) is provided on the end surface of the molded housing (5) facing the annular port (1) in the radial direction of the annular port (1), and an action groove (96) for installing the connecting arm (94) is provided in the molded housing (5) on the top wall of the movable guide groove (95). The top of the extrusion column (6) is provided with a guide block (97) that cooperates with the moving guide groove (95).

6. The automotive ABS sealing gasket manufacturing equipment according to claim 1, characterized in that, The extrusion cavity (7) includes a mixing tube (71), the top of which is connected to a flared tube (72), the top of which is connected to the bottom of the cooling and forming cavity (8). A tapered guide block (73) is provided inside the flared tube (72). The diameter of the tapered guide block (73) gradually increases upward along the axial direction of the flared tube (72). An extrusion cavity is formed between the outer wall of the tapered guide block (73) and the inner wall of the flared tube (72). An inlet (74) is provided on the side wall of the mixing tube (71).

7. The automotive ABS sealing gasket manufacturing equipment according to claim 6, characterized in that, The cooling forming cavity (8) includes a cooling tube (81), and a cylinder (82) is provided inside the cooling tube (81). The bottom of the cylinder (82) is connected to the top of the conical guide block (73), and a cooling forming cavity is formed between the outer wall surface of the cylinder (82) and the inner wall surface of the cooling tube (81). A spiral cooling pipe is provided in the inner wall of the cooling pipe body (81), and the two ends of the spiral cooling pipe form a cooling water inlet (83) and a cooling water outlet (84) on the surface of the cooling pipe body (81), respectively.

8. The automotive ABS sealing gasket manufacturing equipment according to claim 7, characterized in that, A lifting drive (10) is provided at the bottom of the mixing tube (71), and the bottom of the conical guide block (73) is connected to the lifting drive (10) via a shaft (11).

9. The automotive ABS sealing gasket manufacturing equipment according to claim 7, characterized in that, A piston disc (12) is provided inside the mixing tube (71), and a pressure chamber is formed between the bottom of the piston disc (12) and the inner wall of the mixing tube (71). The pressure chamber is connected to an external air pressure device.

10. The automotive ABS sealing gasket manufacturing equipment according to claim 7, characterized in that, The extrusion column (6) includes a frustum base (61), a split nut (62) is provided at the bottom of the frustum base (61), an actuating rod (63) is provided in the middle of the split nut (62), a pneumatic drive unit is provided inside the frustum base (61), the top of the actuating rod (63) extends into the interior of the frustum base (61) and connects to the output end of the pneumatic drive unit, the pneumatic drive unit is used to drive the actuating rod (63) to move axially along the frustum base (61) so that the actuating rod (63) opens the split nut (62).

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