Extrusion equipment capable of radially shrinking in axial movement

Abstract

The utility model discloses extrusion equipment capable of radially shrinking in axial movement, which comprises an extrusion device and a support device, the extrusion device comprises a shell, the interior of the shell is hollow, one end of the shell is provided with a port, and the center of the port is provided with a positioning seat; a telescopic mechanism is arranged in the shell, the telescopic end of the telescopic mechanism is annularly and uniformly connected with a plurality of mold bases, extrusion molds are detachably mounted on the inner circumferential sides of the mold bases, and a space circle formed by the multiple extrusion molds is coaxial with the positioning base; the peripheral surface of the mold seat is in sliding fit with the inner wall of the shell, and a conical reducing section is arranged at the position, close to the outlet, of the shell and used for guiding the mold seat to radially contract when the mold seat axially approaches the port; the supporting device is used for supporting the filter element from the outside of the port of the extrusion device so as to ensure that the filter element is coaxially matched with the positioning seat; and when the plurality of extrusion dies shrink in the radial direction, the extrusion dies are matched with the positioning seat to extrude the ends of the filter elements. According to the utility model, a plurality of extrusion dies are synchronously driven by one telescopic mechanism, the structure is simple, and the efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of filter element processing, in particular to an extrusion device which contracts radially during axial movement. Background Art

[0002] Filter element end caps seal the ends of the filter media and provide support. They are typically made from sheet steel, stamped into the desired shape. When the filter element is installed in a vehicle and engine, the vibrations generated by mechanical movement put significant stress on the air filter. The end caps enhance the filter media's load-bearing capacity.

[0003] At present, the assembly process of the filter element end head relies on extrusion equipment. However, the extrusion equipment in the prior art has the following technical defects: First, the multiple extrusion heads in the extrusion device need to be radially contracted from the circumferential side of the filter element end head for extrusion, so each extrusion head needs to be connected to a separate drive mechanism, resulting in a complex structure of the extrusion device; second, different extrusion heads are required for filter element end heads of different signal types. The extrusion head is difficult to process as a mold and has high cost. Utility Model Content

[0004] The purpose of the utility model is to provide an extrusion device that contracts radially during axial movement, so as to solve the above-mentioned technical problems existing in the prior art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an extrusion device that radially contracts during axial movement, used for extrusion processing of a filter element end head, comprising an extrusion device and a supporting device, wherein the extrusion device comprises a shell, the interior of the shell is hollow, one end of the shell is open, and a positioning seat is provided in the center of the port; a telescopic mechanism is provided in the shell, the telescopic mechanism has a telescopic end that is coaxial with the positioning seat, the telescopic end is circumferentially and evenly connected to a plurality of mold seats, the inner circumferential side of the mold seat is detachably mounted with an extrusion mold, and the space circle formed by the plurality of extrusion molds is coaxial with the positioning seat; the outer circumferential surface of the mold seat is slidably matched with the inner wall of the shell, and the shell is provided with a tapered diameter reduction section near the outlet position, which is used to guide the radial contraction of the mold seat when the mold seat is axially close to the port; the supporting device is used to support the filter element from the outside of the port of the extrusion device to ensure that the filter element is coaxially matched with the positioning seat; when the plurality of extrusion dies are radially contracted to, they cooperate with the positioning seat to extrude the filter element end head.

[0006] In one possible embodiment, the telescopic end of the telescopic mechanism is fixedly connected to a push plate 1, and a number of push rods are evenly connected to the push plate 1 in a circumferential direction. The end of the push rod away from the telescopic end is fixedly connected to a push plate 2, and the spatial circle formed by each of the push plates 2 is coaxial with the positioning seat, and each of the push plates 2 is radially slidably connected to the mold seat along its spatial circle.

[0007] In a possible embodiment, a permanent magnet is provided on a surface of each mold base close to the shell, and the inner wall of the shell is made of a magnetic metal material.

[0008] In a possible embodiment, a fine-tuning device is installed on the operating side end face of the extrusion device, and one end of the fine-tuning device entering the housing abuts against the mold base to limit the end point of the axial movement of the mold base.

[0009] In one possible embodiment, a baffle is provided in the shell between the telescopic mechanism and the positioning seat, a positioning seat connecting shaft is fixedly connected to the baffle, the positioning seat is fixed to one end of the positioning seat connecting shaft extending toward the shell port, and a through hole is opened on the baffle to accommodate the push rod to pass freely.

[0010] In one possible embodiment, a wedge block is fixed to the inner circumferential surface of each mold seat, and a guide sliding seat that cooperates with the wedge block is protruded on the circumferential side of the positioning seat connecting shaft to guide the radial expansion of each mold seat when it is reset.

[0011] In a possible embodiment, at least one reset spring is provided between two adjacent extrusion dies, and the reset spring provides power for resetting each extrusion die.

[0012] In one possible embodiment, the extrusion mold includes a mold body, a mold slider is integrally formed in the first direction of the mold body, the mold slider is used to cooperate with the mold base, one end of the mold body has an extrusion head, and the second direction of the extrusion head has an extrusion end, and the second direction is opposite to the first direction.

[0013] In one possible embodiment, the extrusion equipment of the present invention that radially contracts during axial movement also includes a processing platform, on which a first support is installed. The extrusion device is detachably installed on the first support, and the installation direction of the extrusion device and the first support is adjustable.

[0014] In one possible embodiment, the support device includes a second support fixedly connected to the processing platform, two support plates detachably fixed to the second support, the two support plates are arranged at intervals, two support rods are connected between the two support plates along the width direction, and at least two support seats are detachably installed between the two support rods, and the support seats are provided with a limiting groove adapted to the outer diameter of the filter element.

[0015] In a possible implementation manner, the positioning seat is detachably mounted on the end of the positioning seat connecting shaft.

[0016] In a possible embodiment, eight mold seats are provided, and one mold body is mounted on each mold seat. When the eight mold bodies are closed, a complete circle is formed.

[0017] The utility model discloses the following technical effects:

[0018] This new extrusion die system uses a telescopic mechanism to synchronously drive multiple extrusion dies, converting axial motion into radial contraction and extrusion. This simplifies the structure of traditional extrusion devices, improves extrusion efficiency, and enhances product consistency. Furthermore, the extrusion dies of this new system are driven by multiple die holders, making them easy to replace, reducing die processing difficulty and cost, and extending die life. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. 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 these drawings without paying any creative work.

[0020] Figure 1 This is the front view of the device of the utility model;

[0021] Figure 2 It is a right side view of the device of the utility model;

[0022] Figure 3 It is a top view of the device of the utility model;

[0023] Figure 4 It is an axonometric drawing of the equipment of the present utility model;

[0024] Figure 5 This is an enlarged view of the extrusion device in the utility model;

[0025] Figure 6 This is a schematic structural diagram of the support device in the utility model;

[0026] Figure 7 This is a schematic diagram of the structure of the extrusion assembly in the device of the utility model;

[0027] Figure 8 This is a schematic structural diagram of the extrusion die in the device of the utility model;

[0028] Figure 9 It is a cross-sectional view of the housing of the device of the present utility model;

[0029] Figure 10 This is a cross-sectional view of an extrusion device in one embodiment of the present invention. Figure 1 ;

[0030] Figure 11 This is a cross-sectional view of an extrusion device in one embodiment of the present invention. Figure 2 ;

[0031] Figure 12 A cross-sectional view of an extrusion device in another embodiment of the present invention Figure 1 ;

[0032] Figure 13 A cross-sectional view of an extrusion device in another embodiment of the present invention Figure 2 ;

[0033] Figure 14 This is a schematic structural diagram of an extrusion assembly in another embodiment of the present invention.

[0034] In the figure: 1. Processing platform; 2. First support; 3. Extrusion device; 30. Connecting terminal; 31. Shell; 32. Baffle; 33. Through hole; 34. Reduced diameter section; 35. Positioning seat connecting shaft; 36. Guide sliding seat; 4. Compressed gas pipeline; 5. Air compressor; 6. Support device; 61. Second support; 62. Groove 1; 63. Groove 2; 64. Support plate 1; 65. Support plate 2; 66. Support rod; 67. Support seat; 68. Limiting groove; 7. Extrusion assembly; 71. Extrusion die; 711. Die body; 712. Extrusion head; 713. Die slider; 714. Extrusion end; 72. Return spring; 8. Positioning seat; 9. Telescopic cylinder; 10. Push plate 1; 11. Push rod; 12. Push plate 2; 13. Die seat; 14. Permanent magnet; 15. Wedge block; 16. Fine-tuning device. DETAILED DESCRIPTION

[0035] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0036] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0037] Reference Figures 1 to 9As shown, the present invention provides an extrusion device that contracts radially during axial movement, which is used to squeeze and fix the filter element end head to the end of the filter element. The filter element referred to in the present invention is a tubular filter element. The end of the filter element needs to be connected to the filter element end head to play the role of protecting the filter element and facilitating the connection with the use device. The extrusion device that contracts radially during axial movement of the present invention includes an extrusion device 3 and a support device 6. The extrusion device 3 is a main component for pressing the filter element end head against one end of the filter element. The support device 6 is an auxiliary component that provides support and positioning for the filter element when the extrusion device 3 is working. Specifically, the extrusion device 3 includes a housing 31, an extrusion assembly 7 located within the extrusion housing 31, a positioning seat 8 and a telescopic mechanism. The extrusion assembly 7 and the positioning seat 8 cooperate to squeeze the filter element end head. The positioning seat 8 is used to fix the filter element end head from the inside. The extrusion assembly 7 squeezes the filter element end head to the filter screen through radial extrusion force, and the support device 6 supports and positions the filter element on which the filter element end head needs to be installed outside the extrusion device 3.

[0038] The shell 31 is hollow inside, with an open end and a connection terminal 30 for connecting to the compressed gas pipeline 4 extending from the top. Figure 5 As shown. Figures 9 to 11 As shown, a positioning seat 8 is provided at the center of the port of the shell 31, and the positioning seat 8 is fixed in the shell 31 through the positioning seat connecting shaft 35; a telescopic mechanism is provided in the shell 31, and the telescopic mechanism has a telescopic end coaxial with the positioning seat 8, which is used to drive the extrusion assembly to move axially; a number of die seats 13 are evenly connected to the telescopic end in an annular direction, and each die seat 13 is used to install an extrusion die 71. The inner circumference of the die seat 13 is detachably installed with an extrusion die 71. Multiple extrusion dies 71 together constitute an extrusion assembly 7, and the space circle where the extrusion assembly 7 is located is coaxial with the positioning seat 8. Specifically, in this embodiment, 8 extrusion dies 71 are provided, as shown in FIG. Figure 7 As shown, Figure 7 (a) is a three-dimensional structural diagram of the extrusion assembly 7, Figure 7 Middle (b) is a front view of the extrusion assembly 7; the outer peripheral surface of the mold base 13 is slidably matched with the inner wall of the shell 31, and the shell 31 is provided with a tapered diameter reduction section 34 near the outlet position, which is used to convert the axial movement part of the mold base 13 into radial contraction movement, thereby achieving the effect of axial and radial synchronous movement. The diameter reduction section 34 at the port of the shell 31 can guide each extrusion mold 71 to radially contract when the mold base 13 is axially close to the port; the support device 6 is used to support the filter element from the outside of the port of the extrusion device 3 to ensure that the filter element is coaxially matched with the positioning seat 8; when multiple extrusion molds 71 ​​are radially contracted, they cooperate with the positioning seat 8 to extrude the end of the filter element.

[0039] The working principle of the extrusion equipment that radially contracts during axial movement disclosed in the above embodiment is: the telescopic mechanism drives the mold base 13 to move axially, and the extrusion dies 71 installed on the inner circumferential side of each mold base 13 are evenly distributed circumferentially, and under the guidance of the diameter reduction section 34 of the shell 31, the axial movement is changed into a radial synchronous contraction movement. The purpose is to achieve the synchronous radial contraction operation of 8 extrusion dies 71 through one motion unit (telescopic mechanism). Compared with the prior art that requires 8 different motion units to be set from the outer circumferential side of 8 extrusion dies 71, the structure of the utility model is simpler, and the driving of the 8 extrusion dies 71 is more synchronous, which not only solves the problem of the complex structure of the prior art, but also achieves the beneficial effect of consistent extrusion action and force.

[0040] In order to further solve the problem of difficulty in mold processing in the prior art, the utility model provides a mold base 13 outside each extrusion mold 71, and the mold base 13 is slidably matched with the inner wall of the shell 31. An inclined surface matching the locking section is provided on the mold base 13, thereby realizing the standardization of the structure of the extrusion device 3. When it is necessary to process products with different limit numbers, it is only necessary to replace the extrusion mold 71, and the extrusion mold 71 does not need to be provided with an inclined surface matching the diameter reduction section 34, thereby reducing the difficulty of mold processing.

[0041] In this embodiment, the telescopic mechanism is a telescopic cylinder 9, which is fixed to the inner bottom of the shell 31. The telescopic cylinder 9 has a telescopic end facing the port of the shell 31, and the telescopic end is fixedly connected to a push plate 10. The side of the push plate 10 facing away from the telescopic end (the side facing the port of the shell 31) is evenly distributed with 8 push rods 11 in the circumference, and the end of the 8 push rods 11 away from the push plate 10 is fixedly connected to a push plate 2 12. Each push plate 2 12 is radially slidably connected to a mold seat 13. The sliding connection between the push plate 2 12 and the mold seat 13 can not only transmit the axial driving force of the telescopic cylinder 9 to the mold seat 13, but also realize the radial contraction movement of the mold seat 13. The mold seat 13 and the outer peripheral surface are slidably matched with the inner wall of the shell 31. The outer peripheral surface of the end of the mold seat 13 close to the port has an inclined surface that matches the diameter reduction section 34, and the inner peripheral surface of the end of the mold seat 13 close to the port can be detachably installed with the extrusion mold 71.

[0042] In order to enable the mold base 13 to be radially reset when it is retracted inward with the telescopic cylinder 9, a permanent magnet 14 is embedded in the outer peripheral surface of the mold base 13 of this embodiment. At the same time, the inner wall of the shell 31 is made of magnetic metal. When the mold base 13 moves axially toward the telescopic cylinder 9, under the action of the magnetic force, the mold base 13 automatically approaches the inner wall of the shell 31. It should be understood that the magnetic attraction force of the permanent magnet 14 should be greater than the radial sliding force between the mold base 13 and the push plate 2 12, and the magnetic attraction force of the permanent magnet 14 should be less than the thrust / pull force of the telescopic cylinder 9.

[0043] In this embodiment, in order to provide an operating space for the telescopic cylinder 9 that drives the extrusion assembly to move axially, a partition plate 32 is provided inside the housing 31. The partition plate 32 is located between the telescopic mechanism and the positioning seat 8. The partition plate 32 is used to provide an installation point for the positioning seat 8. A positioning seat connecting shaft 35 is fixedly connected to the center of the partition plate 32. The positioning seat 8 is fixedly connected to one end of the positioning seat connecting shaft 35 extending towards the port of the housing 31. Eight through holes 33 are formed in the partition plate 32 for eight push rods 11 to freely pass through. A certain distance should be left between the partition plate 32 and the telescopic cylinder 9 to ensure the axial stroke of the telescopic cylinder 9.

[0044] As Figure 7 , the extrusion assembly 7 includes eight independent extrusion dies 71. The eight extrusion dies 71 have the same structure and are circularly distributed. When the respective extrusion dies 71 are radially closed, the sides of the extrusion dies 71 abut against each other to jointly form a complete circular assembly. The structure of a single extrusion die 71 is as Figure 8 shown, including a die body 711. A die slider 713 is integrally formed on the first direction (the outer peripheral side of the circular assembly) of the die body 711. The die slider 713 is used to cooperate with the die seat 13. One end of the die body 711 has an extrusion head 712. The extrusion head 712 has an extrusion end 714 in the second direction (the outer peripheral side of the circular assembly). The second direction is opposite to the first direction.

[0045] As Figures 1 to 4 shown, the extrusion device that radially contracts during axial movement in this embodiment further includes a processing platform 1. The processing platform 1 can be a box structure. A first support 2 is installed on the upper surface of the processing platform 1. The extrusion device 3 is detachably installed on the first support 2. For example, as Figure 5 shown, the first support 2 can be a U-shaped structure with an upward opening. The extrusion device 3 is fixedly installed between two vertical frames through fastening bolts on both sides. The extrusion device 3 can be horizontally installed or vertically installed, and only needs to be fastened and angle-adjusted according to the needs of the processed product. Therefore, the installation direction of the extrusion device 3 and the first support 2 is adjustable.

[0046] As Figure 6 shown, the support device 6 includes a second support 61 fixedly connected to the processing platform 1 and two support plates detachably fixed to the second support 61. The two support plates are arranged at intervals. Two support rods 66 are connected between the two support plates in the width direction. At least two support seats 67 are detachably installed between the two support rods 66. A limiting groove 68 adapted to the outer diameter of the filter element is formed in the support seat 67. Specifically, a groove one 61 and a groove two 62 are provided above the second support 61. A support plate one 64 is supported and installed in the groove one 61 through bolts, and a support plate two 65 is supported and installed in the groove two 62 through bolts. During actual use, different height support plates can be replaced according to the required support height.

[0047] In some embodiments, the positioning seat 8 is detachably mounted on the end of the positioning seat connecting shaft 35 , and the processing requirements of filter elements with different inner diameters can be met by replacing the positioning seat 8 .

[0048] like Figure 10 As shown, Figure 10 The diagram shows the state of the extrusion device 3 in the initial position. At this time, the telescopic cylinder 9 is in a compressed state, and the die holder 13 is located inside the housing 31 and contacts the inner wall, in a radially open state.

[0049] like Figure 11 As shown, Figure 11 The diagram shows the state of the extrusion device 3 in the working position. At this time, the telescopic cylinder 9 is in the extended state, the mold base 13 moves axially to the port position of the shell 31, and is in the same axial position as the positioning base 8. The inclined surface of the mold base 13 contacts the reduced diameter section 34 of the shell 31, and the mold base 13 is in a radially contracted state.

[0050] In other embodiments, specifically Figure 12 and Figure 13 As shown, a reduced diameter section 34 for guiding the mold seat 13 to shrink inward is provided on the inner side of the shell 31, and a guide sliding seat 36 for guiding the mold seat 13 to expand outward is provided on the outer peripheral side of the positioning seat connecting shaft 35. The guide sliding seat 36 has a conical surface facing the mold seat 13. Correspondingly, a wedge block 15 is provided on the inner peripheral surface of the mold seat 13 to cooperate with the guide sliding seat 36. When the mold seat 13 moves axially inward under the drive of the telescopic mechanism, each mold seat 13 is stretched open under the guidance of the guide sliding seat 36, thereby achieving the same technical effect as radially expanding each mold seat 13 by magnetic attraction in the above embodiment.

[0051] In some other embodiments, at least one return spring 72 is provided between two adjacent extrusion dies 71, and the return spring 72 provides power for opening and returning each extrusion die 71. Figure 14 As shown, Figure 14 (a) is a three-dimensional structural diagram of the extrusion assembly 7, Figure 14 Middle (b) is a front view of the extruded assembly 7.

[0052] It is understandable that there are many devices or structures that can guide the mold base 13 to reset, such as setting a return spring, setting a magnetic ring in the shell 31, etc. The present invention only provides two structures that can achieve the above functions, and other structures are no longer given as examples in the present invention.

[0053] When the extrusion die 71 contracts radially, it squeezes the end of the filter element. It can be designed so that when multiple extrusion dies 71 contract radially to be completely closed, a preset extrusion stroke is achieved. Alternatively, the radial stroke of the extrusion die 71 can be limited by setting a limit point. In some embodiments, this function can be achieved by setting an axial motion limit point. In order to accurately control the stroke of the extrusion die 71, a fine-tuning device 16 is installed on the operating side end face of the extrusion device 3. The end of the fine-tuning device 16 that enters the housing 31 abuts against the die seat 13 to limit the axial motion end point of the die seat 13. The fine-tuning device 16 is threadedly connected to the extrusion device 3, and the length of the fine-tuning device 16 entering the interior of the extrusion device 3 is adjusted by rotation, thereby achieving adjustment of the axial limit point.

[0054] It should be understood that in actual applications, the telescopic mechanism can also be other driving structures or mechanical devices that can realize linear motion functions / rotational motion / telescopic motion. For example, it can be a telescopic motor, hydraulic cylinder, electric cylinder, etc.

[0055] The present invention also provides an extrusion method for radial contraction during axial movement, using any of the above-mentioned extrusion devices for radial contraction during axial movement. The extrusion method includes the following steps:

[0056] Step S1, equipment installation: Select an appropriate extrusion die 71 and a positioning seat 8 according to the size of the filter element and the filter element end to be processed, and install them in the extrusion device 3; and select an appropriate support device 6 according to the size of the filter element and the filter element end to be processed; ensure that the extrusion device 3 and the support device 6 are properly installed on the processing platform 1, so that the center of the limiting groove 68 above the support device 6 is on the same axis as the positioning seat 8 and the center of each extrusion die 71;

[0057] Step S2, placing the filter element: placing the filter element to be processed on the supporting device 6, ensuring that the filter element is coaxially matched with the positioning seat 8;

[0058] Step S3, start the extrusion device 3: start the telescopic mechanism (such as the telescopic cylinder 9), so that its telescopic end pushes the push plate 10, and then pushes the push rod 11 and the push plate 2 12, so that the mold base 13 moves axially;

[0059] Step S4, converting axial movement into radial contraction: When the mold base 13 moves axially to the exit position of the housing 31, the outer peripheral surface of the mold base 13 slides with the inner wall of the housing 31 and is guided by the diameter-reducing section 34 to achieve radial contraction;

[0060] Step S5, extrusion molding: As the die seat 13 contracts radially, the extrusion die 71 cooperates with the positioning seat 8 to extrude the filter element end until the extrusion die 71 extrude the filter element end onto the end of the filter element;

[0061] Step S6, reset stage: After the extrusion is completed, the telescopic mechanism moves in the reverse direction to return the mold base 13 to the initial position, ready for the next extrusion operation; auxiliary devices such as the permanent magnet 14 or the reset spring 72 are used to help the mold base 13 reset;

[0062] Step S7, taking out the finished product: After the extrusion is completed, take out the processed filter element end and check its quality to ensure that the extrusion molding meets the requirements.

[0063] Compared with the prior art, the extrusion device that radially contracts during axial movement disclosed in the embodiment of the present invention has at least the following beneficial effects:

[0064] 1. Simple structure: By using a telescopic mechanism to synchronously drive multiple extrusion dies 71, the complex structure of the traditional extrusion device 3 in which each extrusion head 712 requires a separate driving mechanism is simplified.

[0065] 2. High working efficiency: Since the telescopic mechanism can synchronously drive multiple extrusion dies 71, the consistency of the extrusion action and the consistency of the force are improved, thereby improving working efficiency.

[0066] 3. Cost Reduction: The sliding fit between the die base 13 and the inner wall of the housing 31, as well as the matching inclined surface of the locking section on the die base 13, achieve a standardized structure for the extrusion device 3. Thus, when different product models need to be processed, only the extrusion die 71 needs to be replaced, reducing the difficulty and cost of die manufacturing.

[0067] 4. Easy to replace the mold: the extrusion mold 71 can be detachably mounted on the mold base 13, making it easy and quick to replace the extrusion mold 71 of different models.

[0068] 5. Improve the service life of the mold: Since the mold base 13 and the inner wall of the shell 31 are slidably matched, the friction between the mold and the shell 31 is reduced, which helps to improve the service life of the mold.

[0069] 6. Strong adaptability: Through the detachable positioning seat 8, it can adapt to the processing requirements of filter elements with different inner diameters, enhancing the adaptability and flexibility of the equipment.

[0070] 7. Easy operation: The extrusion device 3 can be installed on the first support 2 on the processing platform 1, and the installation direction is adjustable, so that the equipment can be quickly adjusted according to the needs of the processed products.

[0071] 8. Stable support: The support device 6 provides stable support and positioning for the filter element, ensuring the coaxial fit between the filter element and the positioning seat 8, improving the processing accuracy, and solving the error problem caused by manual support.

[0072] 9. Magnetic force assisted reset: A permanent magnet 14 is embedded in the outer peripheral surface of the mold base 13, and the mold base 13 is reset by magnetic force, which simplifies the reset mechanism of the mold base 13.

[0073] 10. Multiple reset methods: In addition to magnetic-assisted reset, other possible reset methods are also provided, such as setting a return spring, setting a magnetic ring in the housing 31, etc., which increases the design flexibility of the device.

[0074] The parts not described in detail in the present invention are conventional technical means well known to those skilled in the art.

[0075] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0076] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements to the technical solutions of the present invention made by ordinary technicians in this field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. An extrusion device that contracts radially during axial movement, characterized in that: The invention comprises an extrusion device (3) and a support device (6), wherein the extrusion device (3) comprises a shell (31), the shell (31) is hollow inside, one end of the shell is open, and a positioning seat (8) is provided at the center of the port; a telescopic mechanism is provided inside the shell (31), the telescopic mechanism has a telescopic end coaxial with the positioning seat (8), the telescopic end is circumferentially and evenly connected to a plurality of die seats (13), an inner peripheral side of the die seat (13) is detachably mounted with an extrusion die (71), and a space circle formed by the plurality of extrusion dies (71) and the positioning seat (8) is formed. coaxial; the outer peripheral surface of the die seat (13) is slidably matched with the inner wall of the shell (31); the shell (31) is provided with a tapered diameter reduction section (34) near the outlet position, which is used to guide the radial contraction of the die seat (13) when it is axially close to the port; the supporting device (6) is used to support the filter element from the outside of the port of the extrusion device (3) to ensure that the filter element and the positioning seat (8) are coaxially matched; when the multiple extrusion dies (71) are radially contracted, they cooperate with the positioning seat (8) to extrude the end of the filter element.

2. The extrusion device that radially contracts during axial movement according to claim 1, characterized in that The telescopic end of the telescopic mechanism is fixedly connected to a push plate 1 (10), and a plurality of push rods (11) are evenly connected to the push plate 1 (10) in a circular direction. The end of the push rod (11) away from the telescopic end is fixedly connected to a push plate 2 (12), and the space circle formed by each push plate 2 (12) is coaxial with the positioning seat (8), and each push plate 2 (12) is connected to the mold seat (13) in a radially sliding manner along its space circle.

3. The extrusion device that radially contracts during axial movement according to claim 2, characterized in that A baffle plate (32) is provided in the shell (31) and is located between the telescopic mechanism and the positioning seat (8). A positioning seat connecting shaft (35) is fixedly connected to the baffle plate (32). The positioning seat (8) is fixedly connected to one end of the positioning seat connecting shaft (35) extending toward the port of the shell (31). A through hole (33) is provided on the baffle plate (32) to accommodate the push rod (11) to pass freely.

4. The extrusion device that radially contracts during axial movement according to claim 3, characterized in that: A wedge block (15) is fixedly connected to the inner circumferential surface of each mold seat (13), and a guide sliding seat (36) that cooperates with the wedge block (15) is protruded on the circumferential side of the positioning seat connecting shaft (35) and is used to guide the radial expansion of each mold seat (13) when it is reset.

5. The extrusion device that radially contracts during axial movement according to claim 3, characterized in that The positioning seat (8) is detachably mounted on the end of the positioning seat connecting shaft (35).

6. The extrusion device that radially contracts during axial movement according to claim 2, characterized in that: At least one reset spring (72) is provided between two adjacent extrusion dies (71), and the reset spring (72) provides power for resetting each extrusion die (71).

7. The extrusion device that radially contracts during axial movement according to claim 1, characterized in that The extrusion die (71) comprises a die body (711), a die slider (713) is integrally formed on the die body (711) in a first direction, the die slider (713) is used to cooperate with the die base (13), one end of the die body (711) has an extrusion head (712), and the second direction of the extrusion head (712) has an extrusion end (714), and the second direction is opposite to the first direction.

8. The extrusion device that radially contracts during axial movement according to claim 1, characterized in that: It also includes a processing platform (1), on which a first support (2) is installed, and the extrusion device (3) is detachably installed on the first support (2), and the installation direction of the extrusion device (3) and the first support (2) is adjustable.

9. The extrusion device that radially contracts during axial movement according to claim 8, characterized in that The support device (6) comprises a second support (61) fixedly connected to the processing platform (1), and two support plates detachably fixed to the second support (61), the two support plates being spaced apart, two support rods (66) being connected between the two support plates along the width direction, at least two support seats (67) being detachably mounted between the two support rods (66), and a limiting groove (68) adapted to the outer diameter of the filter element being provided on the support seat (67).

10. The extrusion device that radially contracts during axial movement according to claim 7, characterized in that: There are eight mold seats (13), each of which has a mold body (711) mounted thereon. The eight mold bodies (711) form a complete circle when closed.

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