An extrusion molding device for filter production

Abstract

The present invention provides an extrusion molding device for filter production, which relates to the technical field of plastic extrusion molding, including: the lower mold as a whole is composed of a molding sleeve and a load-bearing stress ring welded to the top of the molding sleeve, and the flange at the top of the filter housing is extruded and molded at the top of the load-bearing stress ring; three rectangular installation grooves are arranged around the load-bearing stress ring; a rectangular stripping block is rotatably installed inside each of the rectangular installation grooves, and a margin space is maintained between the two ends of each rectangular stripping block and the two ends of the corresponding rectangular installation groove for the rectangular stripping block to swing up and down. When the rectangular stripping block filter housing swings up and down, the end away from the flange can be separated from the flange, and the stripping operation of its body and the flange can be completed at the same time, which saves the trouble of additional manual effort to perform secondary stripping of the flange and the rectangular stripping block filter housing, and the operation is convenient and quick.

Description

Technical Field

[0001] The invention relates to the technical field of plastic extrusion molding, in particular to an extrusion molding device for filter production. Background Art

[0002] The filter is generally composed of a plastic shell and a filter element inserted into the plastic shell. The plastic shell of the filter needs to be manufactured by an extrusion molding device for filter production. The extrusion molding device for filter production is a mechanical equipment that is used to extrude heated plastic raw materials to form a filter shell with a certain shape and size.

[0003] The top of the filter housing is often provided with a flange for connecting and fixing with the plugging cover. After extrusion molding, the flange is likely to adhere to the mold for molding it. In order to facilitate the disassembly and unloading of the formed flange and the filter housing as a whole, the existing extrusion molding device generally has a stripping mechanism on the mold for separating and disassembling the flange. There is generally a certain contact area between the stripping mechanism and the flange, which may cause the stripping mechanism and the flange to adhere to each other. As a result, after the stripping mechanism strips the flange from the mold, the flange may be adhered and fixed to the top of the stripping mechanism, and additional manual effort is required to strip the flange and the stripping mechanism, which results in the need to strip the flange again, which is cumbersome and inconvenient to operate, indirectly reducing the efficiency of disassembly and unloading of the filter housing after molding and the overall practicality of the extrusion molding device. Summary of the invention

[0004] In view of this, the present invention provides an extrusion molding device for filter production to solve the problem that the flange needs to be peeled off again, which is troublesome and inconvenient to operate and use, and indirectly reduces the efficiency of disassembly and unloading of the filter housing after molding.

[0005] The technical solution proposed by the present invention is: an extrusion molding device for filter production, specifically comprising: a platen, a lower die and an upper die, wherein the upper die is used to slide downward and be plugged into the lower die to perform extrusion molding on the plastic raw material placed in the lower die for producing the filter housing;

[0006] The lower mold as a whole is composed of a forming sleeve and a load-bearing force ring welded to the top of the forming sleeve, and the flange at the top of the filter housing is extruded and formed at the top of the load-bearing force ring; three rectangular mounting grooves are arranged around the load-bearing force ring; a rectangular stripping block is rotatably installed inside each of the rectangular mounting grooves, and a margin space is maintained between the two ends of each rectangular stripping block and the two ends of the corresponding rectangular mounting groove for the rectangular stripping block to swing up and down, and an inverted L-shaped blocking plate is slidably installed inside each margin space through spring pushing; rectangular plate grooves are connected to the two ends of the top of each of the rectangular mounting grooves, and a filling plate of a shape and size adapted to the shape and size is rotatably installed in each of the rectangular plate grooves;

[0007] The head end of the filling plate and the head end of the L-shaped blocking plate are in mutually facing oblique sections, and the head end inclined surface of each filling plate abuts against the head end inclined surface of the L-shaped blocking plate at the corresponding position; the two ends of each rectangular stripping block abut against the two L-shaped blocking plates at the corresponding position respectively;

[0008] The rectangular stripping block is used to swing up and down to strip the flange and the load-bearing ring at the top of the filter housing.

[0009] Furthermore,

[0010] Two rotating shafts are symmetrically welded at the middle position of each rectangular stripping block, and the outer rotating shaft of each rectangular stripping block is extended and rotated through the side wall of the corresponding side of the rectangular installation groove at the corresponding position, and a swing rod is welded at the head end of the outer rotating shaft of each rectangular stripping block, and the tail end of each swing rod is rotatably connected to an L-shaped connecting rod;

[0011] A synchronous driving ring is mounted on the circumferential outer wall of the lower die through a spring-pushing sliding sleeve, and the tail end of each L-shaped connecting rod is rotatably connected to the synchronous driving ring.

[0012] Furthermore,

[0013] During the extrusion process, the rectangular stripping block is limited to a horizontal state and abuts against the flange at the top end of the filter housing.

[0014] Furthermore,

[0015] During the extrusion molding process, the top horizontal portion of the L-shaped blocking plate covers the top opening of the margin space, and the filling plate is horizontally closed in the rectangular mounting groove.

[0016] Furthermore,

[0017] The vertical part of each L-shaped blocking plate is symmetrically welded with two horizontal sliding shafts, and each of the two symmetrically arranged horizontal sliding shafts is slidably plugged with the short side walls on the corresponding sides of the rectangular installation groove at the corresponding position;

[0018] A horizontal positioning shaft is welded to the middle position of the bottom of each L-shaped blocking plate, and a horizontal positioning shaft is welded and hoisted at the bottom of the load-bearing ring near each rectangular mounting groove. Each horizontal positioning shaft is pushed by a spring and slides through the positioning ear block at the corresponding position.

[0019] Furthermore,

[0020] The outer circumference of the synchronous drive ring is welded with three rod sleeves, and the outer circumference of the lower mold is welded with three vertical positioning rods, each rod sleeve is slidably matched with the vertical positioning rod at the corresponding position, and the tail end of the L-shaped connecting rod is rotatably connected with the rod sleeve at the corresponding position;

[0021] Two springs are symmetrically mounted on each vertical positioning rod, and opposite ends of the two springs are respectively in contact with the upper and lower ends of the rod sleeve.

[0022] Furthermore,

[0023] An L-shaped mounting rod is welded on the outer circumferential wall of the lower die near a vertical positioning rod, and a plug shaft is slidably mounted on the bottom side of the vertical rod section of the L-shaped mounting rod through a spring push, and a square sliding sleeve is slidably mounted on the top side of the vertical rod section of the L-shaped mounting rod, and an inclined connecting rod is connected between the square sliding sleeve and the plug shaft;

[0024] A horizontal force transmission plate is welded on one side of the square sliding sleeve facing the lower die.

[0025] Furthermore,

[0026] A positioning sleeve is welded on the ring body of the synchronous drive ring, and the head end of the plug shaft is inserted and matched with the positioning sleeve.

[0027] Furthermore,

[0028] The upper die is composed of an extrusion column arranged vertically and an annular pressure plate welded to the top of the extrusion column, wherein a circle of vertically arranged opening shafts is welded around the outer edge of the bottom of the annular pressure plate, and when the upper die slides downward, each opening shaft is inserted and matched with the load-bearing force ring;

[0029] The hole-opening shaft 403 is extended and hollow in structure, and a top shaft 4031 is installed inside the hole-opening shaft 403 through a spring push-pull mechanism. When the hole-opening shaft 403 is inserted and matched with the load-bearing force ring 205, the bottom end of the top shaft 4031 abuts against the horizontal force transmission plate 2044.

[0030] A vertical lead screw is fastened with bolts at the top center position of the annular pressure plate, and two vertical sliding shafts fastened with bolts are symmetrically arranged at the top end of the annular pressure plate on both sides of the vertical sliding shaft, and each vertical sliding shaft is slidably matched with the top side rod of the U-shaped support frame.

[0031] Furthermore,

[0032] The lower die is fastened to the center position of the top of the table plate by bolts, and an inverted U-shaped support frame is welded to the two short sides of the top of the table plate. The top side rod of the U-shaped support frame is offsetly installed with a threaded sleeve that is rotatably arranged therethrough. A sprocket and a limit ring are respectively welded to the upper and lower ends of the threaded sleeve, and the sprocket and the limit ring are respectively in contact with the upper and lower sides of the top side rod of the U-shaped support frame.

[0033] A driving device is fastened to the bottom of one end of the top side rod of the U-shaped support frame by bolts, a rotating shaft of the driving device is fitted through the top side rod of the U-shaped support frame and a sprocket is mounted on the top, and chains are tensioned and installed on the two sprockets;

[0034] The threaded sleeve is inserted and matched with the vertical lead screw.

[0035] The present invention provides an extrusion molding device for filter production, which has the following beneficial effects:

[0036] 1. When the rectangular stripping block filter housing swings up and down, the end away from the flange can be separated from the flange, and the stripping operation of its body and the flange can be completed at the same time. Compared with the existing technology, it avoids the trouble of additional manual effort to perform secondary stripping of the flange and the rectangular stripping block filter housing after the flange and the lower mold filter housing are pushed and stripped. The operation is convenient and quick, which is beneficial to indirectly improve the disassembly and unloading efficiency of the filter housing after molding and the overall practicality of the extrusion molding device.

[0037] 2. The L-shaped plugging plate filter housing can block the excess space to prevent the plastic material squeezed and diffused on the top of the load-bearing force ring filter housing from directly leaking and wasting through the excess space during the extrusion molding process, thereby affecting the molding quality of the flange. The sliding and vacant position of the L-shaped plugging plate filter housing is driven by the up and down swing driving force of the rectangular stripping block filter housing, and the return action is driven by the spring on the horizontal positioning shaft filter housing. This saves the trouble of additional manual operation of the L-shaped plugging plate filter housing for sliding and resetting before and after the rectangular stripping block filter housing is operated to strip the flange, which helps to further simplify the flange stripping operation steps and further improve the efficiency of disassembling and unloading the filter housing after molding.

[0038] 3. When the L-shaped plugging plate filter housing is pushed into an empty position by the rectangular stripping block filter housing, the filling plate filter housing can be swung upward to open and vacate the rectangular installation slot filter housing for the sliding of the top horizontal part of the L-shaped plugging plate filter housing; through the guiding principle of the inclined surface at the first end of the L-shaped plugging plate filter housing and the inclined surface at the first end of the filling plate filter housing, the L-shaped plugging plate filter housing can be pushed and driven to swing upward when it is pushed to an empty position, thereby opening and vacating the rectangular installation slot filter housing for the sliding of the top horizontal part of the L-shaped plugging plate filter housing; when the top horizontal part of the L-shaped plugging plate filter housing is slid and separated from the filling plate filter housing, the filling plate filter housing in the inclined and lifted state can rely on its gravity to swing downward and reset itself, thus eliminating the trouble of manually driving the filling plate filter housing to slide and reset before and after operating the rectangular stripping block filter housing to perform the stripping operation on the flange, which helps to simplify the flange stripping operation steps and further improve the efficiency of disassembling and unloading the filter housing after molding.

[0039] 4. When the L-shaped plugging plate filter housing is pushed into the empty space by the rectangular stripping block filter housing, the top horizontal part of the L-shaped plugging plate filter housing slides toward the inside of the rectangular mounting groove filter housing, and the rectangular mounting groove filter housing can provide the redundant space required for the sliding of the top horizontal part of the L-shaped plugging plate filter housing, thereby ensuring the normal and effective implementation of the sliding empty space function of the L-shaped plugging plate filter housing; the filling plate filter housing is used to fill and seal the rectangular mounting groove filter housing, so as to avoid the rectangular mounting groove filter housing being directly exposed and opened due to lack of shielding during the extrusion molding process, resulting in the internal compression filling of plastic material, causing the compressed plastic material to finally be formed and solidified and protrude from the bottom side of the flange, affecting the standard shape of the flange. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0041] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0042] In the attached picture:

[0043] Figure 1 The overall structural diagram of the present invention is shown;

[0044] Figure 2 A schematic diagram showing the plug-in matching state of the upper die and the lower die of the present invention is shown;

[0045] Figure 3 A schematic diagram of the bottom side structure of the lower mold of the present invention is shown;

[0046] Figure 4 A schematic diagram showing the separation state of the upper mold and the lower mold of the present invention is shown;

[0047] Figure 5 A schematic diagram of a half-section structure of an upper mold of the present invention is shown;

[0048] Figure 6 A schematic diagram showing a disassembled state of the synchronous drive ring of the present invention is shown;

[0049] Figure 7 A schematic diagram of the structure of the synchronous drive ring of the present invention is shown;

[0050] Figure 8 A schematic diagram showing the installation position of the rectangular stripping block of the present invention is shown;

[0051] Fig. 9 A schematic diagram of the inner side structure of a half-section of a rectangular installation groove of the present invention is shown;

[0052] Fig.10 A schematic diagram of the filter housing structure of the present invention is shown.

[0053] List of reference numerals:

[0054] 1. Tabletop; 101. U-shaped support frame;

[0055] 2. Lower die; 201. Flange forming ring; 202. Vertical positioning rod; 203. Synchronous driving ring; 2031. Positioning sleeve; 2032. Rod sleeve; 204. L-shaped mounting rod; 2041. Insert shaft; 2042. Square sliding sleeve; 2043. Connecting rod; 2044. Horizontal force transmission plate; 205. Load-bearing force ring; 2051. Positioning ear block; 206. Rectangular mounting groove; 2061. Rectangular plate groove; 207. Filling plate;

[0056] 3. Threaded sleeve;

[0057] 4. Upper die; 401. Vertical lead screw; 402. Vertical slide shaft; 403. Opening shaft; 4031. Top shaft;

[0058] 5. Rectangular stripping block; 501. Swing rod; 502. L-shaped connecting rod; 6. L-shaped blocking plate; 601. Horizontal sliding shaft; 602. Horizontal positioning shaft;

[0059] 7. Driving device;

[0060] 8. Filter housing. DETAILED DESCRIPTION

[0061] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0062] The following is an embodiment of the present invention, please refer to Figures 1 to 10 :

[0063] The present invention provides an extrusion molding device for filter production, comprising: a platen 1, a lower die 2 and an upper die 4, wherein the upper die 4 is used to slide downward and be plugged into the lower die 2 to perform extrusion molding on a plastic raw material placed in the lower die 2 for producing a filter housing 8;

[0064] The lower mold 2 is composed of a forming sleeve and a load-bearing force ring 205 welded to the top of the forming sleeve. The flange at the top of the filter housing 8 is extruded and formed at the top of the load-bearing force ring 205. Three rectangular mounting grooves 206 are arranged around the load-bearing force ring 205. A rectangular stripping block 5 is rotatably installed inside each rectangular mounting groove 206. A residual space is maintained between the two ends of each rectangular stripping block 5 and the two ends of the corresponding rectangular mounting groove 206 for the rectangular stripping block 5 to swing up and down. An inverted L-shaped plugging plate 6 is installed inside each residual space through a spring push-pushing and sliding mechanism. The two ends of the top of each rectangular mounting groove 206 are connected to each other. A rectangular plate groove 2061 is provided, and a filling plate 207 of a corresponding shape and size is rotatably installed in each rectangular plate groove 2061; the head end of the filling plate 207 and the head end of the L-shaped blocking plate 6 are in opposing oblique sections, and the head end inclined surface of each filling plate 207 is in contact with the head end inclined surface of the L-shaped blocking plate 6 at the corresponding position; the two ends of each rectangular stripping block 5 are respectively in contact with the two L-shaped blocking plates 6 at the corresponding positions; the rectangular stripping block 5 is used to swing up and down to strip the flange at the top of the filter housing 8 and the load-bearing force ring 205; the flange at the top of the filter housing 8 is likely to adhere to the top of the load-bearing force ring 205 after molding.

[0065] Preferably,

[0066] Two rotating shafts are symmetrically welded at the middle position of each rectangular stripping block 5, and the outer rotating shaft of each rectangular stripping block 5 is extended and rotatably cooperates with the side wall of the corresponding side of the rectangular mounting groove 206 at the corresponding position. A rocker arm 501 is welded at the head end of the outer rotating shaft of each rectangular stripping block 5, and the tail end of each rocker arm 501 is rotatably connected to an L-shaped connecting rod 502; a synchronous driving ring 203 is slidably sleeved on the circumferential outer wall of the lower mold 2 through a spring push, and the tail end of each L-shaped connecting rod 502 is rotatably connected to the synchronous driving ring 203.

[0067] Preferably,

[0068] During the extrusion process, the rectangular stripping block 5 is limited to a horizontal state and abuts against the flange at the top of the filter housing 8;

[0069] When the rectangular stripping block 5 is limited to the horizontal position, the rectangular installation groove 206 can be filled and blocked to prevent the plastic material squeezed and diffused on the top of the load-bearing ring 205 from leaking directly through the rectangular installation groove 206 in large quantities during the extrusion molding process, causing waste;

[0070] When the three rectangular stripping blocks 5 swing up and down synchronously, the part protruding from the top of the load-bearing force ring 205 will push and drive the flange to slide upward, so as to control the flange to separate from the load-bearing force ring 205 and the lower mold 2, and then strip the flange. After the flange is stripped, the filter housing 8 can be taken out of the lower mold 2 for unloading;

[0071] When the rectangular stripping block 5 swings up and down, the end away from the flange can be separated from the flange, and the stripping operation of its main body and the flange can be completed at the same time. Compared with the prior art, it avoids the trouble of additional manual effort to perform secondary stripping of the flange and the rectangular stripping block 5 after the flange and the lower mold 2 are pushed and stripped. The operation is convenient and quick, which is beneficial to indirectly improve the disassembly and unloading efficiency of the filter housing 8 after molding and the overall practicality of the extrusion molding device.

[0072] Preferably,

[0073] During the extrusion process, the top horizontal portion of the L-shaped blocking plate 6 covers the top opening of the margin space, and the filling plate 207 is horizontally closed in the rectangular mounting groove 206;

[0074] The L-shaped plugging plate 6 can block the residual space, so as to prevent the plastic raw material squeezed and diffused on the top of the load-bearing ring 205 from directly leaking and wasting through the residual space during the extrusion molding process, thereby affecting the molding quality of the flange. The L-shaped plugging plate 6 is set to block the residual space, so that the extrusion molding device can ensure that the rectangular stripping block 5 can swing up and down normally to strip the flange while taking into account the sealing of the plastic raw material, and has better practicality.

[0075] When the rectangular stripping block 5 swings up and down, its two ends can push and drive the L-shaped blocking plates 6 located at its two ends to slide away from each other, so as to leave two spare spaces at its two ends for its normal swinging up and down movement;

[0076] When the L-shaped plugging plate 6 is pushed into the empty position by the rectangular stripping block 5, the top horizontal portion thereof slides toward the inside of the rectangular mounting groove 206, and the rectangular mounting groove 206 can provide the redundant space required for the top horizontal portion of the L-shaped plugging plate 6 to slide, thereby ensuring the normal and effective implementation of the sliding empty position function of the L-shaped plugging plate 6;

[0077] The filling plate 207 is used to fill and block the rectangular installation groove 206, so as to prevent the rectangular installation groove 206 from being directly exposed and opened due to lack of shielding during the extrusion molding process, causing the inside to be filled with plastic material, so that the filled plastic material is finally formed and solidified and protrudes from the bottom side of the flange, affecting the standard molding of the flange;

[0078] When the L-shaped plugging plate 6 is pushed into an empty position by the rectangular stripping block 5, the filling plate 207 can be swung upward to open the empty rectangular installation groove 206 for the top horizontal part of the L-shaped plugging plate 6 to slide. Through the guiding principle of the inclined surface of the head end of the L-shaped plugging plate 6 and the inclined surface of the head end of the filling plate 207, the L-shaped plugging plate 6 can be pushed and driven to swing upward when it is pushed to slide into an empty position, thereby opening the empty rectangular installation groove 206 for the top horizontal part of the L-shaped plugging plate 6 to slide. After the top horizontal part of the L-shaped plugging plate 6 slides and separates from the filling plate 207, the filling plate 207 in the inclined and lifted state can swing downward and reset by itself by its gravity. In this way, the trouble of manually driving the filling plate 207 to slide and reset before and after operating the rectangular stripping block 5 to perform the stripping operation on the flange can be eliminated, which helps to simplify the stripping operation steps of the flange and further improve the efficiency of disassembling and unloading the filter housing 8 after molding.

[0079] It is worth noting that the top of the filling plate 207 in the horizontal closed state, the top of the horizontal part of the L-shaped blocking plate 6 and the top of the rectangular stripping block 5 in the horizontal state are located on the same horizontal plane as the top of the load-bearing ring 205 and remain flat during the extrusion molding process.

[0080] Preferably,

[0081] The vertical part of each L-shaped blocking plate 6 is symmetrically welded with two horizontal sliding shafts 601, and each of the two symmetrically arranged horizontal sliding shafts 601 is slidably plugged with the short side walls of the corresponding sides of the rectangular installation groove 206 at the corresponding position;

[0082] A horizontal positioning shaft 602 is welded at the middle of the bottom of each L-shaped plugging plate 6, and a horizontal positioning shaft 602 is welded and hoisted at the bottom of the load-bearing force ring 205 near each rectangular mounting groove 206. Each horizontal positioning shaft 602 is pushed by a spring to slide through and fit with the positioning ear block 2051 at the corresponding position;

[0083] When the rectangular stripping block 5 is reset and maintained in a horizontal state to prepare for the next extrusion molding operation, the spring on the horizontal positioning shaft 602 can rebound and push to drive the L-shaped blocking plate 6 to automatically slide and reset toward the rectangular stripping block 5; during the extrusion molding process, the L-shaped blocking plate 6 is pushed against one end of the rectangular stripping block 5 by the spring on the horizontal positioning shaft 602 and remains in the residual space, thereby implementing continuous and effective shielding and blocking of the residual space;

[0084] The sliding movement of the L-shaped plugging plate 6 is driven by the up and down swing driving force of the rectangular stripping block 5, and the return movement is driven by the spring on the horizontal positioning shaft 602. This saves the trouble of manually operating the L-shaped plugging plate 6 to slide and reset before and after the rectangular stripping block 5 is operated to strip the flange, which helps to further simplify the stripping operation steps of the flange and further improve the efficiency of disassembling and unloading the filter housing 8 after molding.

[0085] Preferably,

[0086] Three rod sleeves 2032 are welded around the circumference of the synchronous driving ring 203, and three vertical positioning rods 202 are welded around the circumference of the outer wall of the lower mold 2. Each rod sleeve 2032 is slidably matched with the vertical positioning rod 202 at the corresponding position, and the tail end of each L-shaped connecting rod 502 is rotatably connected with the rod sleeve 2032 at the corresponding position; two springs are symmetrically mounted on each vertical positioning rod 202, and the opposite ends of the two springs are respectively in contact with the upper and lower ends of the rod sleeve 2032;

[0087] The synchronous drive ring 203, three rocker rods 501, three L-shaped connecting rods 502 and three rectangular stripping blocks 5 are connected together to form three crank rocker mechanisms. Through these three crank rocker mechanisms, the up and down sliding synchronous drive ring 203 can drive the three rocker rods 501 and the three rectangular stripping blocks 5 to swing up and down synchronously to strip the flange.

[0088] Preferably,

[0089] An L-shaped mounting rod 204 is welded to a position near a vertical positioning rod 202 on the circumferential outer wall of the lower mold 2, and an insertion shaft 2041 is slidably installed on the bottom side of the vertical rod section of the L-shaped mounting rod 204 through a spring push, and a square sliding sleeve 2042 is slidably mounted on the top side of the vertical rod section of the L-shaped mounting rod 204, and an inclined connecting rod 2043 is connected between the square sliding sleeve 2042 and the insertion shaft 2041; a horizontal force transmission plate 2044 is welded on the side of the square sliding sleeve 2042 facing the lower mold 2.

[0090] Preferably,

[0091] A positioning sleeve 2031 is welded on the ring body of the synchronous driving ring 203, and the head end of the plug shaft 2041 penetrates and plugs into the positioning sleeve 2031;

[0092] The plug shaft 2041 can be plugged and fixed to the synchronous drive ring 203, and the three rectangular stripping blocks 5 are positioned and maintained in a horizontally supported state of use, so as to avoid the three rectangular stripping blocks 5 from lacking positioning during the extrusion molding process, and being pushed up and down by the plastic raw material extruded and diffused on the load-bearing ring 205, forming a separation gap in the three rectangular mounting grooves 206, causing the plastic raw material to leak and waste through the separation gap; the square sliding sleeve 2042, the plug shaft 2041 and the connecting rod 2043 are connected together to form a crank slider mechanism, through which the up and down sliding square sliding sleeve 2042 can drive the plug shaft 2041 to slide back and forth, control the plug shaft 2041 and the positioning sleeve 2031 to be separated or plugged in, and implement loosening and tightening of the synchronous drive ring 203 and the three rectangular stripping blocks 5; when driving the three rectangular stripping blocks 5 to swing up and down to implement stripping on the flange, it is necessary to first pull out the plug shaft 2041 and the positioning sleeve 2031 to loosen the three rectangular stripping blocks 5.

[0093] Preferably,

[0094] The upper die 4 is composed of an upright extrusion column and an annular pressure plate welded to the top of the extrusion column, wherein a circle of upright opening shafts 403 are welded around the bottom outer edge of the annular pressure plate. When the upper die 4 slides downward, each opening shaft 403 is inserted and matched with the load-bearing force ring 205; one opening shaft 403 is extended, and the opening shaft 403 is a hollow structure and a top shaft 4031 is installed inside by a spring push-pushing slide. When the opening shaft 403 is inserted and matched with the load-bearing force ring 205, The bottom end of the top shaft 4031 is in contact with the horizontal force transmission plate 2044; the top center position of the annular pressure plate is fastened with a vertical lead screw 401 by bolts, and the top of the annular pressure plate is symmetrically provided with two vertical sliding shafts 402 fastened by bolts at both sides of the vertical sliding shaft 402, and each vertical sliding shaft 402 is penetrated and slidably matched with the top side rod of the U-shaped support frame 101; the circumferential outer edge of the top of the load-bearing ring 205 is welded with a flange forming ring 201, and when the upper mold 4 slides downward, the annular pressure plate is plugged and matched with the flange forming ring 201;

[0095] The plastic raw material that is pressurized and diffused to the top of the load-bearing stress ring 205 is squeezed into the flat annular space formed by the load-bearing stress ring 205, the flange forming ring 201, the annular pressure plate on the upper mold 4, and the extrusion forming column, and is extruded in the flat annular space to form the flange of the filter housing 8. A circle of opening shafts 403 can generate a circle of positioning holes on the flange through its penetration effect, thereby finally completing the forming of the flange of the filter housing 8.

[0096] Through the power transmission of the top shaft 4031, when the upper mold 4 slides downward to perform the extrusion molding operation, it can push and drive the horizontal force transmission plate 2044 and the square sliding sleeve 2042 to slide downward, drive and control the plug shaft 2041 to slide toward the lower mold 2 and plug and cooperate with the positioning shaft sleeve 2031, and automatically complete the positioning of the three rectangular stripping blocks 5. When an extrusion molding operation is completed, the upper mold 4 slides upward to reset. When the flange is stripped, the top shaft 4031 follows the upper mold 4 to slide upward and separate from the horizontal force transmission plate 2044. At this time, the plug shaft 2041 loses the push holding force from the upper mold 4 and is rebounded by the spring on it. The push-driven upper mold 2 slides away from the lower mold 2, and is automatically separated from the positioning sleeve 2031, thereby loosening the three rectangular stripping blocks 5. In this way, the top shaft 4031 and the horizontal force transmission plate 2044 are used together with the spring on the plug shaft 2041 through power transmission, and the plug shaft 2041 can use the driving force of the upper mold 4 to drive the plug-in and slide, and automatically loosen and tighten the three rectangular stripping blocks 5. This saves the trouble of manually pulling and inserting the plug shaft 2041 before and after each extrusion molding operation to loosen and tighten the three rectangular stripping blocks 5, which helps to simplify the operation steps of the extrusion molding operation and improve the production and processing efficiency of the extrusion molding device.

[0097] Since the top shaft 4031 is arranged on the extended hole-opening shaft 403 and is pushed downward to protrude from the hole-opening shaft 403 under normal conditions, the top shaft 4031 protrudes below a circle of the hole-opening shaft 403 under normal conditions. This allows the top shaft 4031 to be in contact with the horizontal force transmission plate 2044 in advance when the extrusion molding column of the upper mold 4 has not yet been extended to the bottom space of the molding sleeve of the lower mold 2 and the plastic raw material has not been squeezed and spread to the top of the load-bearing force ring 205 during the process of sliding the upper mold 4 downward to perform the extrusion molding operation, and the top shaft 4031 can be pushed and driven to contact the horizontal force transmission plate 2044 and the positioning sleeve 2031 plug-in fit, pre-positioning the three rectangular stripping blocks 5, avoiding the plastic material being squeezed and diffused to the top of the load-bearing force ring 205 when the three rectangular stripping blocks 5 are not positioned or not stably positioned, and pre-pushing the three unpositioned rectangular stripping blocks 5, causing the three rectangular stripping blocks 5 to be pushed and swung to form separation gaps between the three rectangular installation grooves 206, causing the plastic material to leak directly through the pre-formed separation gaps, which helps to ensure that the sealing and anti-leakage function of the rectangular stripping blocks 5 on the rectangular installation grooves 206 is normally and effectively implemented;

[0098] After the top shaft 4031 is in contact with the horizontal force transmission plate 2044 in advance and the top-pushing driving plug shaft 2041 completes the positioning of the three rectangular stripping blocks 5, since the extrusion molding column of the upper mold 4 has not yet been inserted into the bottommost space of the molding sleeve of the lower mold 2, the upper mold 4 needs to continue to slide down to complete the final extrusion molding operation and continue to push the horizontal force transmission plate 2044 through the top shaft 4031. At this time, the top shaft 4031 can be pressed against the horizontal force transmission plate 2044 to compress the spring thereon and slide toward the inner space of the opening shaft 403. The continuous thrust force applied to the horizontal force transmission plate 2044 is converted to the spring accumulated thereon, and the continuous thrust force is buffered and unloaded to avoid the continuous thrust force being directly and rigidly applied to the horizontal force transmission plate 2044, and the horizontal force transmission plate 2044, the plug shaft 2041 or the connecting rod 2043 are pushed and broken, which helps to ensure the integrity of the automatic positioning mechanism composed of the horizontal force transmission plate 2044, the plug shaft 2041, the connecting rod 2043 and the square sliding sleeve 2042, and implements better breakage protection for the automatic positioning mechanism;

[0099] It is worth noting that: the upper mold 4 actually transmits the downward sliding thrust to the top shaft 4031 through the spring arranged inside the extended hole-opening shaft 403. The elastic thrust of the spring inside the extended hole-opening shaft 403 should be much greater than the elastic thrust of the spring on the insertion shaft 2041.

[0100] After the flange is peeled off and the filter housing 8 is disassembled after molding, when the three synchronous drive rings 203 are in an idle state, the six springs symmetrically arranged on the three vertical positioning rods 202 can automatically push and hold the synchronous drive ring 203 in the middle of the three vertical positioning rods 202, so that the positioning sleeve 2031 is kept in a state of being aligned with the insertion shaft 2041 at the same height, so as to prepare for the reinsertion and mating of the insertion shaft 2041 and the positioning sleeve 2031 when the extrusion molding operation is performed again, which helps to ensure the normal and effective implementation of the automatic insertion and tightening function of the insertion shaft 2041;

[0101] The centering holding effect produced by the automatic pushing of the above six springs can save the trouble of manually sliding the synchronous drive ring 203 and calibrating the positioning sleeve 2031 and the plug-in shaft 2041 each time the three rectangular stripping blocks 5 are positioned, which helps to further improve the production and processing efficiency of the extrusion molding device.

[0102] Preferably,

[0103] The lower die 2 is fastened to the top center position of the table plate 1 by bolts, and an inverted U-shaped support frame 101 is welded to the two short sides of the top of the table plate 1. The top side rod of the U-shaped support frame 101 is offsetly installed with a threaded sleeve 3 that is rotatably arranged therethrough. A sprocket and a limit ring are respectively welded to the upper and lower ends of the threaded sleeve 3, and the sprocket and the limit ring are respectively in contact with the upper and lower sides of the top side rod of the U-shaped support frame 101; a driving device 7 is fastened to the bottom side of one end portion of the top side rod of the U-shaped support frame 101 by bolts, and the rotating shaft of the driving device 7 is fitted with the top side rod of the U-shaped support frame 101 and a sprocket is mounted on the top, and chains are tensionedly installed on the two sprockets; the threaded sleeve 3 is screwed and inserted into the vertical lead screw 401;

[0104] The forward and reverse rotation of the threaded sleeve 3 can drive the vertical screw 401 and the upper mold 4 to slide up and down, providing the upper mold 4 with a driving force for the extrusion molding operation. Through the chain, the driving device 7 can drive the threaded sleeve 3 to rotate forward and reverse.

[0105] The working principle of this embodiment is as follows: the upper die 4 is used to slide downward and plug into the lower die 2 to perform extrusion molding on the plastic raw material placed in the lower die 2 for producing the filter housing 8; the threaded sleeve 3 is rotated forward and reversely to drive the vertical screw 401 and the upper die 4 to slide up and down, providing the upper die 4 with a driving force for the extrusion molding operation, and the driving device 7 can perform forward and reverse rotation driving on the threaded sleeve 3 through the chain;

[0106] When the rectangular stripping block 5 is limited to the horizontal position, the rectangular installation groove 206 can be filled and blocked to prevent the plastic material squeezed and diffused on the top of the load-bearing ring 205 from leaking directly through the rectangular installation groove 206 in large quantities during the extrusion molding process, causing waste;

[0107] When the three rectangular stripping blocks 5 swing up and down synchronously, the part protruding from the top of the load-bearing force ring 205 will push and drive the flange to slide upward, so as to control the flange to separate from the load-bearing force ring 205 and the lower mold 2, and then strip the flange. After the flange is stripped, the filter housing 8 can be taken out of the lower mold 2 for unloading; when the rectangular stripping block 5 swings up and down, the end away from the flange can be separated from the flange, and the stripping operation between the body and the flange is completed at the same time.

[0108] The synchronous driving ring 203, three swing rods 501, three L-shaped connecting rods 502 and three rectangular stripping blocks 5 are connected together to form three crank rocker mechanisms. Through the three crank rocker mechanisms, the synchronous driving ring 203 can be slid up and down to drive the three swing rods 501 and the three rectangular stripping blocks 5 to swing up and down synchronously, so as to strip the flange.

[0109] The plug shaft 2041 can be plugged and fixed to the synchronous drive ring 203, so that the three rectangular stripping blocks 5 are positioned and maintained in a horizontal support state. The square sleeve 2042, the plug shaft 2041 and the connecting rod 2043 are connected together to form a crank slider mechanism. Through this crank slider mechanism, the square sleeve 2042 can be slid up and down to drive the plug shaft 2041 to slide back and forth, and the plug shaft 2041 and the positioning sleeve 2031 can be controlled to be separated or plugged in, so as to tighten the synchronous drive ring 203 and the three rectangular stripping blocks 5.

[0110] Through the power transmission of the extended hole-opening shaft 403, when the upper mold 4 slides downward to perform the extrusion molding operation, it can push and drive the horizontal force transmission plate 2044 and the square sliding sleeve 2042 to slide downward, drive and control the plug shaft 2041 to slide toward the lower mold 2 and plug and match with the positioning shaft sleeve 2031, and automatically complete the positioning of the three rectangular stripping blocks 5. When an extrusion molding operation is completed, the upper mold 4 slides upward to reset. When the flange is stripped, the extended hole-opening shaft 403 and the horizontal force transmission plate 2 044 is separated, at this time the plug-in shaft 2041 loses the pushing and holding force from the upper mold 4, and is pushed and driven by the spring rebound thereon to slide away from the lower mold 2, automatically withdrawn from the positioning sleeve 2031, and the three rectangular stripping blocks 5 are loosened. In this way, through the power transmission of the extended perforated shaft 403 and the horizontal force transmission plate 2044 and used together with the spring on the plug-in shaft 2041, the plug-in shaft 2041 can use the driving force of the lifting and sliding of the upper mold 4 to drive the insertion and sliding, and automatically loosen or tighten the three rectangular stripping blocks 5.

[0111] In this article, there are a few points to note:

[0112] 1. The drawings of the embodiments of the present invention only involve structures related to the embodiments of the present invention, and other structures can refer to the general design.

[0113] 2. In the absence of conflict, the embodiments of the present invention and the features therein may be combined with each other to obtain new embodiments.

[0114] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An extrusion molding device for filter production, comprising: A table plate (1), a lower die (2) and an upper die (4), wherein the upper die (4) is used to slide downwards and be plugged into the lower die (2) to perform extrusion molding on a plastic raw material placed in the lower die (2) for producing a filter housing (8); The invention is characterized in that the lower mold (2) is composed of a molding sleeve and a load-bearing force ring (205) welded to the top of the molding sleeve, and the flange at the top of the filter housing (8) is extruded and formed at the top of the load-bearing force ring (205); three rectangular mounting grooves (206) are arranged around the load-bearing force ring (205); a rectangular stripping block (5) is rotatably installed inside each of the rectangular mounting grooves (206), and a residual space for the rectangular stripping block (5) to swing up and down is maintained between the two ends of each rectangular stripping block (5) and the two ends of the corresponding rectangular mounting groove (206), and an inverted L-shaped blocking plate (6) is slidably installed inside each residual space through spring pushing; a rectangular plate groove (2061) is connected to the two ends of the top of each of the rectangular mounting grooves (206), and a filling plate (207) of suitable shape and size is rotatably installed in each of the rectangular plate grooves (2061); The head end of the filling plate (207) and the head end of the L-shaped blocking plate (6) are in mutually inclined sections, and the inclined surface of the head end of each filling plate (207) abuts against the inclined surface of the head end of the L-shaped blocking plate (6) at the corresponding position; the two ends of each rectangular stripping block (5) respectively abut against the two L-shaped blocking plates (6) at the corresponding position; The rectangular stripping block (5) is used to swing up and down to strip the flange and the load-bearing ring (205) at the top of the filter housing (8); Two rotating shafts are symmetrically welded at the middle position of each rectangular stripping block (5); the outer rotating shaft of each rectangular stripping block (5) is extended and rotates through the side wall of the corresponding side of the rectangular mounting groove (206) at the corresponding position; a swing rod (501) is welded at the head end of the outer rotating shaft of each rectangular stripping block (5); and the tail end of each swing rod (501) is rotatably connected to an L-shaped connecting rod (502); A synchronous driving ring (203) is mounted on the circumferential outer wall of the lower die (2) via a spring-pushing sliding sleeve, and the tail end of each L-shaped connecting rod (502) is rotatably connected to the synchronous driving ring (203); The vertical portion of each L-shaped blocking plate (6) is symmetrically welded with two horizontal sliding shafts (601), and each of the two symmetrically arranged horizontal sliding shafts (601) is slidably plugged into the short side wall on the corresponding side of the rectangular installation groove (206) at the corresponding position; A horizontal positioning shaft (602) is welded to the middle of the bottom of each L-shaped blocking plate (6), and a horizontal positioning shaft (602) is welded and hoisted at the bottom of the load-bearing ring (205) near each rectangular mounting groove (206). Each horizontal positioning shaft (602) is pushed through and slidably matched with a positioning ear block (2051) at a corresponding position by a spring.

2. An extrusion molding device for filter production according to claim 1, characterized in that: During the extrusion process, the rectangular stripping block (5) is limited to a horizontal state and is in abutment contact with the flange at the top end of the filter housing (8).

3. An extrusion molding device for filter production according to claim 1, characterized in that: During the extrusion molding process, the top horizontal portion of the L-shaped blocking plate (6) covers the top opening of the margin space, and the filling plate (207) is horizontally closed in the rectangular installation groove (206).

4. The filter production extrusion molding device according to claim 1, characterized in that: The synchronous drive ring (203) is welded with three rod sleeves (2032) around the circumference of the outer ring, and the lower mold (2) is welded with three vertical positioning rods (202) around the circumference of the outer wall, each rod sleeve (2032) is slidably matched with the vertical positioning rod (202) at the corresponding position, and the tail end of each L-shaped connecting rod (502) is rotatably connected with the rod sleeve (2032) at the corresponding position; Two springs are symmetrically mounted on each upright positioning rod (202), and opposite ends of the two springs are in abutment contact with upper and lower ends of the rod sleeve (2032) respectively.

5. The filter production extrusion molding device according to claim 1, characterized in that: An L-shaped mounting rod (204) is welded on the circumferential outer wall of the lower die (2) at a position close to an upright positioning rod (202); an insert shaft (2041) is slidably mounted on the bottom side portion of the upright rod section of the L-shaped mounting rod (204) through a spring push, and a square sliding sleeve (2042) is slidably mounted on the top side portion of the upright rod section of the L-shaped mounting rod (204); an inclined connecting rod (2043) is connected between the square sliding sleeve (2042) and the insert shaft (2041); A horizontal force transmission plate (2044) is welded on one side of the square sliding sleeve (2042) facing the lower die (2).

6. An extrusion molding device for filter production according to claim 5, characterized in that: A positioning sleeve (2031) is welded on the ring body of the synchronous drive ring (203), and the head end portion of the insertion shaft (2041) is inserted and matched with the positioning sleeve (2031).

7. An extrusion molding device for filter production according to claim 5, characterized in that: The upper die (4) is composed of an extrusion-molding column arranged vertically and an annular pressure plate welded to the top of the extrusion-molding column, wherein a circle of vertically arranged opening shafts (403) are welded around the outer edge of the bottom of the annular pressure plate, and when the upper die (4) slides downward, each opening shaft (403) is inserted and matched with the load-bearing force ring (205); An opening shaft (403) is extended, and the opening shaft (403) is a hollow structure, and a top shaft (4031) is installed inside by sliding and pushing through the opening shaft (403) through a spring, and when the opening shaft (403) and the load-bearing force ring (205) are inserted and matched, the bottom end of the top shaft (4031) is in contact with the horizontal force transmission plate (2044); A vertical lead screw (401) is fastened with bolts at the top center of the annular pressure plate, and two vertical slide shafts (402) fastened with bolts are symmetrically arranged at the top of the annular pressure plate on both sides of the vertical slide shaft (402), each vertical slide shaft (402) being penetrated and slidably matched with the top side rod of the U-shaped support frame (101).

8. An extrusion molding device for filter production according to claim 7, characterized in that: The lower die (2) is fastened to the center position of the top end of the table plate (1) by means of bolts, and an inverted U-shaped support frame (101) is welded to the two short sides of the top end of the table plate (1), a threaded sleeve (3) is offsetly installed on the top side rod of the U-shaped support frame (101) and is rotatably arranged therethrough, a sprocket and a limit ring are respectively welded to the upper and lower ends of the threaded sleeve (3), and the sprocket and the limit ring are respectively in contact with the upper and lower sides of the top side rod of the U-shaped support frame (101); A driving device (7) is fastened to the bottom side of one end of the top side rod of the U-shaped support frame (101) by bolts, the rotating shaft of the driving device (7) penetrates and fits the top side rod of the U-shaped support frame (101) and a sprocket is mounted on the top end, and chains are tensioned and installed on the two sprockets; The threaded sleeve (3) is screwed and inserted into the vertical lead screw (401).

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