Extruder

Abstract

The utility model discloses an extruder, which belongs to the technical field of extruders, and comprises a mold locking module, a core mold assembly body, a charging barrel, a guide pillar slide block assembly body, a hydraulic cylinder and a bearing frame, an outer mold base is arranged in the mold locking module and corresponds to a feeding hole of the charging barrel, the core mold assembly body is arranged at the top of the charging barrel and is positioned in the outer mold base, and the guide pillar slide block assembly body is arranged on the outer mold base. The charging barrel is arranged at the bottom of the mold locking module, the guide column sliding block assembly body is arranged at the bottom of the charging barrel, the hydraulic cylinder is arranged at the bottom of the guide column sliding block assembly body, and the bearing frame is installed on the outer side of the hydraulic cylinder. When the extruder extrudes a Teflon pipe, firstly, a blank is installed in the charging barrel, then the blank is locked through the mold locking module, finally, the piston rod of the hydraulic cylinder drives the push rod arranged in the middle of the guide column sliding block assembly to do reciprocating motion, the upper end of the push rod extends into the charging barrel, the blank is continuously extruded out of the core mold assembly, and the Teflon pipe is formed. And heating the Teflon pipe through a tunnel furnace to form a finished product, and finally, winding and forming.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic cylinders, in particular to an extruder. Background Art

[0002] Extruder, also known as extruder, is a device mainly used for extrusion of communication cables, power cables, radio frequency cables, Teflon tubes, corrugated tubes, solid wires, etc.

[0003] The clamping module of the extruder is a mechanism used to lock the clamping plate. Most of the existing clamping modules of the extruder adopt manual rotation of the clamping plate to rotate and fix it in the clamping plate base. Since the manual clamping force of the staff is limited, the clamping plate is easy to loosen during extrusion, affecting the quality of the output material.

[0004] When processing and forming Teflon tubes, the inner hole size of the tube is determined by the core mold, and the bottom of the core mold must be fixed and pulled to ensure that the core mold will not be extruded together with the tube product. Most of the hydraulic cylinders used in the existing extruders for extruding Teflon tubes are double hydraulic cylinders, which may cause problems such as asynchrony, cylinder drag, and large pressure fluctuations, resulting in unstable product quality and low yield of the extruded Teflon tubes. Utility Model Content

[0005] The purpose of the utility model is to provide an extruder to solve the technical problems in the prior art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an extruder, comprising a locking die set, a core die assembly, a barrel, a guide column slider assembly, a hydraulic cylinder and a load-bearing frame, wherein an outer die base is arranged inside the locking die set, corresponding to the feed port of the barrel, the core die assembly is installed at the top of the barrel and is located inside the outer die base, the barrel is arranged at the bottom of the locking die set, the guide column slider assembly is arranged at the bottom of the barrel, the hydraulic cylinder is arranged at the bottom of the guide column slider assembly, and the load-bearing frame is installed on the outside of the hydraulic cylinder.

[0007] Preferably, the clamping die set comprises a mounting plate, a clamping assembly arranged on the mounting plate, a cylinder arranged at the bottom of the mounting plate, a positioning rod arranged at one side of the cylinder, and a movable plate connecting the top of the positioning rod, the top of the telescopic rod of the cylinder and the top of the clamping assembly, the clamping assembly comprises a screw rod, a rotating universal head, a zipper chain and a collar connected in sequence, the screw rod is arranged on the mounting plate, the clamping assembly further comprises a clamping plate base and a clamping plate, the clamping plate base is fixed on the mounting plate, the clamping plate is screwed to the clamping plate base, a connecting rod is arranged on the side of the clamping plate, and the collar is sleeved on the connecting rod;

[0008] The mounting plate is an "L"-shaped structure, and two screw holes are arranged on its side. One end of the screw rod is inserted into the screw hole and extends into the interior of the mounting plate. An air valve fixing plate and a manual air valve are arranged at the bottom of the mounting plate. The manual air valve is installed on the air valve fixing plate, and the manual air valve is connected to the air cylinder.

[0009] The side ring array of the locking plate has a plurality of sockets, and two connecting rods are provided, and the two connecting rods are inserted into the sockets on the opposite sides; the movable plate is provided with a support rod, a U-shaped frame and a guide wheel on the side close to the locking assembly, the U-shaped frame is arranged at the top of the support rod, and the guide wheel is arranged in the U-shaped frame; the locking plate is connected to the movable plate through an outer mold, and the locking plate can rotate relative to the outer mold.

[0010] Preferably, the core mold assembly comprises a core mold base, a shaping pin and a fastener, wherein the fastener fixes the shaping pin in the core mold base, a first through hole for the shaping pin to pass through is provided at the front end of the core mold base, a second through hole for the fastener to pass through is provided at the rear end of the core mold base, the first through hole is connected to the second through hole, and the inner diameter of the second through hole is larger than the inner diameter of the first through hole, and a limiting column is provided at the rear end of the shaping pin, the limiting column is provided in the second through hole and fixed by the fastener;

[0011] The front end of the core mold base is conical and the rear end is cylindrical. The outer wall surface of the rear end of the core mold base is provided with an external thread, and the inner wall surface is provided with an internal thread. The diameter of the limiting column is larger than the diameter of the shaping needle, and larger than the inner diameter of the first through hole, and smaller than the inner diameter of the second through hole.

[0012] Preferably, the guide post and slider assembly comprises a mounting seat, a guide post, a slider and a magnetostrictive displacement sensor, the mounting seat comprises an upper seat and a lower seat, the guide post is arranged between the upper seat and the lower seat, the slider is arranged on the guide post, the displacement sensor is arranged on the outer side of the upper seat, a limit switch is arranged on the upper seat on one side of the displacement sensor, a mounting bracket is arranged on one side of the slider, a magnetic ring corresponding to the magnetostrictive displacement sensor is arranged at the front end of the mounting bracket, and a limit slider adapted to the limit switch is arranged on the side of the mounting bracket;

[0013] The magnetostrictive displacement sensor is vertically arranged on the upper seat, and its lower end extends to the surface of the mounting seat. The upper part of the magnetostrictive displacement sensor is mounted on the upper seat by a first fixing fixture, and the lower part of the magnetostrictive displacement sensor is mounted on the mounting seat by a second fixing fixture and a first L-shaped bracket. The bottom surface of the first L-shaped bracket is connected to the surface of the lower seat, and the side surface is connected to the second fixing fixture;

[0014] The mounting bracket is "L"-shaped, including a side bar and a cross bar, the magnetic ring is installed on the cross bar, the magnetic ring is a semicircular magnetic ring, the inner side of which corresponds to the magnetostrictive displacement sensor, the side bar is provided with a through slot, and the through slot is provided with a plurality of screws, some of the screws fix the mounting bracket on the slider, and the other part of the screws are used to fix the bracket for installing the limit slider;

[0015] There are four guide pillars, and four first oil-free copper sleeves are arranged on the slider. The first oil-free copper sleeves are arranged on the guide pillars and fixed on the slider. The upper seat, the lower seat and the middle of the slider are provided with round holes and positioning grooves for the piston rod of the hydraulic cylinder to pass through.

[0016] Preferably, the hydraulic cylinder comprises a cylinder body, a cylinder bottom is provided at the bottom of the cylinder body, a guide sleeve is provided at the top, a piston assembly is provided in the cylinder body, a first center rod is provided in the piston assembly, the first center rod is a hollow center rod, a drain hole is provided on the side and is communicated with the center hole of the first center rod, the rear end of the first center rod is fixedly connected to the cylinder bottom by a hollow bolt, the front end of the first center rod is fixed in the piston assembly by a second oil-free copper sleeve, and the second oil-free copper sleeve has a plurality of third through holes in an annular array in the circumferential direction;

[0017] The piston assembly includes a piston rod, a first piston and a second piston arranged at the bottom of the piston rod, the first piston sleeve is outside the second piston, the second piston sleeve is outside the first center rod, the piston rod is a hollow piston rod, the inner wall surface of the piston rod is in contact with the outer wall surface of the second oil-free copper sleeve, the side surface of the guide sleeve is provided with a first oil port, and the side surface of the cylinder bottom is provided with a second oil port.

[0018] Preferably, a second center rod is provided in the barrel, the upper end of the second center rod is connected to the core mold base, and the lower end of the second center rod is connected to the front end of the first center rod of the hydraulic cylinder.

[0019] Preferably, a core mold mounting hole adapted to the core mold base is provided inside the outer mold base, and the core mold mounting hole is a conical structure.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] The extruder mainly includes a clamping die set, a core die assembly, a barrel, a guide column and slider assembly, a hydraulic cylinder, a load-bearing frame and an outer die base; the clamping die set is used to lock the outer die base on it to facilitate the extrusion of the Teflon tube; the core die assembly is used to process and shape the Teflon tube; the barrel is used to place the semi-finished blank; the slider of the guide column and slider assembly is connected to the piston rod of the hydraulic cylinder to push the center rod to move so that the blank is extruded to form the Teflon tube; the hydraulic cylinder provides power for the extruder to ensure that the blank can be continuously extruded; the load-bearing frame plays a supporting role and is installed on the ground; the outer die base is used to install the core die assembly;

[0022] By setting up the clamping module, the clamping plate is driven to rise and fall, which is convenient for clamping. At the same time, the clamping plate is stable during the lifting process and will not affect the quality of the extruded material.

[0023] The core mold base and the shaping pin of the core mold assembly are set as a split structure, which facilitates the replacement of the shaping pin; the shaping pin is inserted into the core mold base to ensure that the inner hole of the processed product is not easily eccentric or deviated from the wall, and the yield rate is high;

[0024] By setting up the guide column slider assembly, the various components on it cooperate with each other to ensure the stability of the piston rod of the hydraulic cylinder during extension and retraction, and the high degree of integration reduces the volume and weight of the equipment, ensuring the stability of the quality of the extruded product and a high yield rate;

[0025] By setting a single-cylinder hydraulic cylinder, the center rod is set as a hollow structure, and a drain hole is set on its side so that the hydraulic oil can flow out from the center hole. A through hole is set on the copper sleeve of the center rod to ensure that the piston rod of the hydraulic cylinder will not generate back pressure when it reciprocates, the air inside it can pass through, and the extrusion effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0027] Figure 1 This is a schematic diagram of the main structure of an extruder of the utility model;

[0028] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure of the middle BB;

[0029] Figure 3 This is a structural schematic diagram of a clamping module of an extruder of the utility model;

[0030] Figure 4 It is a structural schematic diagram of a clamping module of an extruder of the utility model from another perspective;

[0031] Figure 5 It is a structural schematic diagram of a core mold assembly of an extruder of the utility model;

[0032] Figure 6 This is a schematic cross-sectional structure diagram of a core mold base of an extruder of the utility model;

[0033] Figure 7 This is a structural schematic diagram of a guide post and slider assembly of an extruder of the utility model;

[0034] Figure 8 for Figure 7 A schematic diagram of the enlarged structure at A in the middle;

[0035] Fig. 9for Figure 7 A schematic diagram of the enlarged structure at B in the middle;

[0036] Fig.10 This is a schematic diagram of the split structure of a hydraulic cylinder of an extruder of the utility model;

[0037] Fig.11 This is a schematic diagram of the overall structure of a hydraulic cylinder of an extruder of the utility model;

[0038] Fig.12 This is a schematic structural diagram of a first center rod of an extruder of the utility model;

[0039] Fig.13 The utility model is a structural schematic diagram of a piston assembly of an extruder.

[0040] Description of reference numerals:

[0041] 1. Clamping mold assembly; 11. Mounting plate; 12. Clamping mold assembly; 121. Screw; 122. Rotating universal head; 123. Zipper chain; 124. Ring; 125. Clamping plate base; 126. Clamping plate; 1261. Socket; 127. Connecting rod; 13. Cylinder; 14. Positioning rod; 15. Movable plate; 151. Support rod; 152. U-shaped frame; 153. Guide wheel; 16. Valve fixing plate; 17. Manual valve; 18. Outer mold base; 181. Core mold mounting hole;

[0042] 2. core mold assembly; 21. core mold base; 211. first through hole; 212. second through hole; 213. external thread; 22. shaping needle; 221. limiting column; 23. fastener.

[0043] 3. barrel; 31. second center rod; 40. push rod;

[0044] 4. Guide column and slider assembly; 41. Mounting seat; 411. Upper seat; 412. Lower seat; 413. Round hole; 42. Guide column; 43. Slider; 431. Copper sleeve; 44. Magnetostrictive displacement sensor; 45. Limit switch; 46. Mounting bracket; 461. Side bar; 4611. Through slot; 4612. Screw; 462. Cross bar; 463. Bracket; 47. Magnetic ring; 48. Limit slider; 49. First fixing fixture; 410. Second fixing fixture; 413. First L-shaped bracket;

[0045] 5. Hydraulic cylinder; 51. Cylinder body; 52. Cylinder bottom; 521. Second oil port; 53. Guide sleeve; 531. First oil port; 54. Piston assembly; 541. Piston rod; 542. First piston; 543. Second piston; 55. First center rod; 551. Drain hole; 56. Hollow bolt; 57. Second oil-free copper sleeve; 571. Third through hole;

[0046] 6. Load-bearing frame. DETAILED DESCRIPTION

[0047] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0048] See also Figure 1-13 The utility model provides a technical solution: an extruder, including a locking module 1, a core mold assembly 2, a barrel 3, a guide column slider assembly 4, a hydraulic cylinder 5 and a load-bearing frame 6. The locking module 1 is provided with an outer mold base 7, corresponding to the feed port of the barrel 3. The core mold assembly 2 is installed on the top of the barrel 3 and is located in the outer mold base 7. The barrel 3 is arranged at the bottom of the locking module 1, the guide column slider assembly 4 is arranged at the bottom of the barrel 3, the hydraulic cylinder 5 is arranged at the bottom of the guide column slider assembly 4, and the load-bearing frame 6 is installed on the outside of the hydraulic cylinder 5.

[0049] The extruder of the utility model is a vertical extruder, which is installed between multiple floors when in use. The extruder mainly includes a locking die set 1, a core die assembly 2, a barrel 3, a guide column slider assembly 4, a hydraulic cylinder 5, a load-bearing frame and an outer die base 7 and other components. The locking die set 1 is used to lock the outer die base 7 thereon to facilitate the extrusion of the Teflon tube; the core die assembly 2 is used to process and shape the Teflon tube; the barrel 3 is used to place the semi-finished blank; the slider of the guide column slider assembly 4 is connected to the piston rod of the hydraulic cylinder 5, and the center rod is pushed to move so that the blank is extruded to form the Teflon tube; the hydraulic cylinder 5 provides power for the extruder to ensure that the blank can be continuously extruded; the load-bearing frame 6 plays a supporting role and is installed on the ground; the outer die base 7 is used to install the core die assembly 2.

[0050] Specifically, the core mold assembly 2 is installed on the top of the barrel 3 and is located in the clamping mold 1. The barrel 3 is set at the bottom of the clamping mold 1. The guide column slider assembly 4 is set at the bottom of the barrel 3. The hydraulic cylinder 5 is set at the bottom of the guide column slider assembly 4, and the load-bearing frame 6 is installed on the outside of the hydraulic cylinder 5. When extruding the Teflon tube, the blank is first installed inside the barrel, and then the blank is locked by the clamping mold 1. Finally, the piston rod of the hydraulic cylinder 5 drives the push rod 40 set in the middle of the guide column slider assembly 4 to reciprocate. The upper end of the push rod 40 extends into the barrel 3 and continuously extrude the blank from the core mold assembly 2 to form a Teflon tube. Then the Teflon tube is heated in a tunnel furnace to form a finished product, and finally, it is wound and formed.

[0051] In a preferred embodiment, referring to Figure 3 and Figure 4The clamping module 1 of the extruder includes a mounting plate 11, a clamping assembly 12 arranged on the mounting plate, a cylinder 13 arranged at the bottom of the mounting plate, a positioning rod 14 arranged on one side of the cylinder, and a movable plate 15 connecting the top of the positioning rod, the top of the telescopic rod of the cylinder and the top of the clamping assembly. The clamping assembly 12 includes a screw 121, a rotating universal head 123, a zipper chain 123 and a collar 124 connected in sequence. The screw 121 is arranged on the mounting plate 11. The clamping assembly 12 also includes a clamping plate base 125 and a clamping plate 126. The clamping plate base 16 is fixed on the mounting plate 11. The clamping plate 126 is screwed to the clamping plate base 125. A connecting rod 127 is provided on the side of the clamping plate 126, and the collar 124 is sleeved on the connecting rod 127.

[0052] Specifically, the mounting plate 11 plays a role of stable support, and various components are arranged on it, among which the locking assembly 12 is used to lock the upper mold to facilitate the extrusion of the Teflon tube; the cylinder 13 is used to separate and close the locking plate 126 and the locking plate base 125, which is further convenient for locking the upper mold; the positioning rod 14 is arranged on the side of the telescopic rod of the cylinder 13, and is used to assist in supporting the upper mold and the locking plate 126 on the movable plate 15, and can also play a guiding role; the movable plate 15 is connected to the positioning rod 14, the telescopic rod of the cylinder 13 and the top of the locking plate 126, to ensure that the cylinder 13 can drive the locking plate 126 to rise and fall, to facilitate locking, and at the same time, to ensure that the locking plate is stable during the lifting process to avoid affecting the quality of the extruded material.

[0053] Furthermore, the mold locking assembly 12 includes a screw 121, a rotating universal head 122, a zipper chain 123, a collar 124, a mold locking plate base 125 and a mold locking plate 126. The screw 121 is mounted on the side plate of the mounting plate 11, with one end of the screw 121 facing outward and the other end facing inward to connect to the rotating universal head 122. The other end of the rotating universal head 122 is connected to the zipper chain 123, and the other end of the zipper chain 123 is connected to the collar 124. When in use, the collar 124 is sleeved on the mold locking plate 126. The connecting rod 127 on the side is used for locking and opening the mold; when locking the mold is required, the lower screw 121 is screwed outwards, and the upper screw 121 is screwed inwards, and during the rotation of the two screws 121, the connecting rod 127 connected thereto is driven to rotate clockwise to achieve the locking operation; when opening the mold is required, the upper screw 121 is screwed outwards, and the lower screw 121 is screwed inwards, and during the rotation of the two screws 121, the connecting rod 127 connected thereto is driven to rotate counterclockwise to achieve the opening operation.

[0054] In a preferred embodiment, referring to Figure 3The mounting plate 11 of the locking die assembly mechanism of the extruder is an "L"-shaped structure, and two screw holes 111 are provided on its side, and one end of the screw 121 is inserted into the screw hole 111 and extends to the inside of the mounting plate 11; the mounting plate 11 is set to be "L"-shaped, including a side plate and a bottom plate, wherein the locking die assembly 12 is arranged on the side plate, and the cylinder 13, the positioning rod 14, the movable plate 15, the locking die plate base 125 and the locking die plate 126 are arranged on the bottom plate. By arranging two screw holes 111 on the side plate of the mounting plate, the screw 121 passes through, ensuring that the screw 121 can move left and right on the mounting plate 11 to achieve locking and opening of the mold; in addition, the front end of the screw 121 is connected to an external tool, and manual and automatic driving methods can be adopted to realize the rotation of the screw.

[0055] An air valve fixing plate 16 and a manual air valve 17 are provided at the bottom of the mounting plate 11. The manual air valve 17 is installed on the air valve fixing plate 16 and connected to the air cylinder 13. The manual air valve 17 is connected to the air cylinder 13 to control the descending stroke of the telescopic rod of the air cylinder 13, that is, to control the descending stroke of the movable plate connected thereto, and further control the descending stroke of the locking plate 126 connected to the movable plate, so as to facilitate the control of the locking plate 126 to merge with the locking plate base 125, and further facilitate the locking of the mold.

[0056] In a preferred embodiment, referring to Figure 3 and Figure 4 The locking die assembly mechanism of the extruder has a plurality of holes 1261 in a circular array on the side of the locking die plate, and two connecting rods 127 are provided, and the two connecting rods 127 are inserted into the holes 1261 on the opposite side; by setting a plurality of holes 1261 in a circular array on the side of the locking die plate 126, the two connecting rods 127 are inserted into the holes 1261 on the opposite side, the holes 1261 are blind holes, and the connecting rod 127 is a "T"-shaped structure. After the connecting rod 127 is inserted into the hole 1261, its front end is exposed outside the locking die plate 126, ensuring that the ring is sleeved on the exposed connecting rod 127, so that the screw 121 drives the connecting rod 127 to move, so that the locking die plate 126 is locked.

[0057] On the movable plate 15, a support rod 151, a U-shaped frame 152 and a guide wheel 153 are provided on one side close to the mold clamping assembly 12. The U-shaped frame 152 is provided at the top of the support rod 151, and the guide wheel 153 is provided inside the U-shaped frame 152. By providing the guide wheel 153 on the movable plate 15, the Teflon tube extruded from the outer mold is guided by the guide wheel 153, ensuring that when the material is discharged, as the guide wheel 153 rotates, the product will not have friction, thereby ensuring the smoothness of the product. The mold clamping plate 126 is connected to the movable plate 15, and the mold clamping plate 126 can rotate relative to the outer mold. The movable plate 15 is provided with a through hole for connecting the outer mold. The outer mold is also provided with a locking bolt to connect the locking plate 126 to the movable plate 15. When locking the mold, the locking plate 126 will move upward and approach the bottom of the movable plate 15. When loosening the mold, the locking plate 126 will move downward a certain distance, so that the locking plate 126 can rotate freely with the outer mold as the center, ensuring that the locking plate 126 is in a loosened state.

[0058] In a preferred embodiment, referring to Figure 5 and Figure 6 The core mold assembly 2 of the extruder includes a core mold base 21, a shaping needle 22 and a fastener 23. The fastener 3 fixes the shaping needle 2 in the core mold base 1. The front end of the core mold base 21 is provided with a first through hole 211 for the shaping needle 22 to pass through. The rear end of the core mold base 21 is provided with a second through hole 212 for the fastener 23 to pass through. The first through hole 211 is connected to the second through hole 212, and the inner diameter of the second through hole 212 is larger than the inner diameter of the first through hole 211. The rear end of the shaping needle 22 is provided with a limiting column 221, which is arranged in the second through hole 212 and fixed by the fastener 23.

[0059] Specifically, the core mold assembly of the extruder mainly includes a core mold base 21, a shaping needle 22 and a fastener 23. The core mold assembly as a whole 2 is installed on the upper part of the barrel 3 of the extruder, wherein the core mold base 21 plays a fixing role, and the shaping needle 22 is installed in the core mold base 21 through the fastener 23. The shaping needle 22 is used to process the inner hole of the Teflon tube. The fastener 23 is a screw, a screw or other accessories that play a fastening role, which is used to lock and fix the shaping needle 22; by setting the core mold base 21 and the shaping needle 22 as a split structure, it is convenient to replace the shaping needle 22; further, when the shaping needle 22 needs to be replaced, the shaping needle can be directly screwed out without wasting materials.

[0060] The traditional core mold assembly is a welded one-piece structure. When replacement is needed, the core mold base 21 and the shaping needle 22 need to be replaced together, which wastes materials. In addition, the shaping needle 22 is directly welded to the core mold base 21, which is prone to eccentricity when processing extruded products. The rear end of the shaping needle 22 of the present application is inserted into the interior of the core mold base 21, so it is not easy to be eccentric or deviate from the wall when extruding products.

[0061] In a preferred embodiment, referring to Figure 5 and Figure 6 The front end of the core mold base 21 of the extruder is conical, and the rear end is cylindrical. The outer wall surface of the rear end of the core mold base 21 is provided with an external thread 213, and the inner wall surface is provided with an internal thread. The front end of the core mold base 21 is set to be conical, which is compatible with the front end of the barrel. When in use, the rear end is screwed and fixed in the barrel through the external thread 213, and the inner wall surface of the rear end of the core mold base 21 is provided with an internal thread to facilitate the fastener 23 to be screwed into the second through hole 212.

[0062] The diameter of the limiting column 221 is larger than the diameter of the shaping pin 22, and larger than the inner diameter of the first through hole 211, and smaller than the inner diameter of the second through hole 212. The limiting column 221 defines the installation position of the shaping pin 22, ensuring that it is fixed in the second through hole 212 and does not pass through the first through hole 211. At the same time, it is also convenient for installation, disassembly, and replacement.

[0063] The shaping pin of the core mold assembly is made of plastic material, which is TORLON 4203. The shaping pin is made of plastic material, but its hardness can reach the level of steel. The diameter of the shaping pin determines the diameter of the inner hole of the pipe.

[0064] In a preferred embodiment, referring to Figure 7-9 The guide post and slider assembly 4 of the extruder includes a mounting seat 41, a guide post 42, a slider 43 and a magnetostrictive displacement sensor 44. The mounting seat 41 includes an upper seat 411 and a lower seat 412. The guide post 42 is arranged between the upper seat 411 and the lower seat 412. The slider 43 is arranged on the guide post 42. The magnetostrictive displacement sensor 44 is arranged on the outer side of the upper seat 411, on one side of the magnetostrictive displacement sensor 44, a limit switch 45 is arranged on the upper seat 411, and a mounting bracket 46 is arranged on one side of the slider 43. A magnetic ring 47 corresponding to the magnetostrictive displacement sensor 44 is arranged at the front end of the mounting bracket 46, and a limit slider 48 adapted to the limit switch 45 is arranged on the side of the mounting bracket 46.

[0065] The guide post and slider assembly of the extruder mainly includes a mounting seat 41, a guide post 42, a slider 43 and a magnetostrictive displacement sensor 44. The mounting seat 41 includes an upper seat 411 and a lower seat 412. The guide post 42 is arranged between the upper seat 411 and the lower seat 412. The slider 43 is arranged on the guide post 42. The magnetostrictive displacement sensor 44 is arranged on the outer side of the upper seat 411. The magnetostrictive displacement sensor 44 is used to sense and measure the distance of the slider displacement. The limit switch 45 is arranged on the upper seat 411 to sense the position of the limit slider 48 on the slider to prevent the slider 48 from colliding with the upper seat 411 when it rises to the highest point, affecting the use. The magnetic ring 47 is installed on the slider 43 through the mounting bracket 46, and corresponds to the magnetostrictive displacement sensor 44. The two are used together to sense the position of the slider. When in use, the top of the hydraulic cylinder is installed on the lower seat 412, and the piston rod inside the hydraulic cylinder is connected to the slider 43. The slider 43 moves with the movement of the piston rod of the hydraulic cylinder. By arranging the guide column slider assembly of the present application on the top of the hydraulic cylinder, the stability of the hydraulic cylinder piston rod during extension and retraction is ensured, and the stability of the quality of the extruded product is ensured.

[0066] In a preferred embodiment, referring to Figure 7 and 9 The magnetostrictive displacement sensor 44 of the guide column slider assembly 4 of the extruder is vertically arranged on the upper seat 411, and its lower end extends to the surface of the mounting seat 41. The upper part of the magnetostrictive displacement sensor 44 is mounted on the upper seat 411 through the first fixing fixture 49, and the lower part of the magnetostrictive displacement sensor 44 is mounted on the mounting seat 41 through the second fixing fixture 410 and the first L-shaped bracket 413. The bottom surface of the first L-shaped bracket 410 is connected to the surface of the lower seat 412, and the side surface is connected to the second fixing fixture 410. The first fixing fixture 49 and the second fixing fixture 410 are mainly used to fix the magnetostrictive displacement sensor 4 to ensure the installation stability of the displacement sensor.

[0067] In a preferred embodiment, referring to Figure 7 and 9The mounting bracket 46 of the guide column slider assembly 4 of the extruder is "L"-shaped, including a side bar 461 and a cross bar 462. The magnetic ring 47 is mounted on the cross bar 462. The magnetic ring 47 is a semicircular magnetic ring, and its inner side corresponds to the magnetostrictive displacement sensor 44. The side bar 461 is provided with a through groove 4611, and a plurality of screws 4612 are provided in the through groove 4611. Some of the screws fix the mounting bracket 46 on the slider 43, and the other part of the screws are used to fix the bracket 463 for mounting the limit slider 48. The magnetic ring 47 is semicircular, and its inner side corresponds to the magnetostrictive displacement sensor 44, and is used to sense the position of the slider. An elongated through slot 4611 is provided on the side rod of the mounting bracket 46, and a screw 4612 is provided inside the through slot 4611. During installation, the mounting bracket 46 is directly placed on the slider, and the screw is passed through the through slot 4611. When the screw is turned downward, the mounting bracket 46 is locked so that the mounting bracket is fixed on the slider 43, which facilitates installation and disassembly. An L-shaped bracket 463 is also provided on the side of the side rod 461, and the bracket 463 is used to fix the side limit slider 48.

[0068] In a preferred embodiment, referring to Figure 7 and 9 The guide post and slider assembly 4 of the extruder has four guide posts 42, and the slider 43 has four first oil-free copper sleeves 431, which are sleeved on the guide posts 42 and fixed on the slider 43. The upper seat 411, the lower seat 412 and the middle of the slider 43 are provided with a round hole 413 and a positioning groove for the piston rod of the hydraulic cylinder to pass through. By arranging the copper sleeves on the guide posts 42, the wear resistance of the slider is increased and it is not easy to wear.

[0069] In a preferred embodiment, referring to Figure 10-13 The hydraulic cylinder 5 of the extruder includes a cylinder body 51, a cylinder bottom 52 is provided at the bottom of the cylinder body, a guide sleeve 53 is provided at the top, a piston assembly 54 is provided in the cylinder body 51, a first center rod 55 is provided in the piston assembly 54, the first center rod 55 is a hollow center rod, a drain hole 551 is provided on the side, and is communicated with the center hole of the first center rod 55, the rear end of the first center rod 55 is fixedly connected to the cylinder bottom 52 by a hollow bolt 56, the front end of the first center rod 55 is fixed in the piston assembly 54 by a second oil-free copper sleeve 57, and the second oil-free copper sleeve 57 has a plurality of third through holes 571 in a circumferential annular array.

[0070] When in use, the hydraulic cylinder 5 is vertically installed at the bottom of the extruder, and the servo hydraulic station provides power for the extruder. Specifically, it includes a cylinder body 51, a cylinder bottom 52 is provided at the bottom of the cylinder body 51, a guide sleeve 53 is provided at the top, a piston assembly 54 is installed inside the cylinder body 51, a first center rod 55 is provided inside the piston assembly 54, the rear end of the first center rod 55 is fixedly connected to the cylinder bottom 52 by a hollow bolt 56, a second oil-free copper sleeve 57 is provided at the front end of the first center rod 55, and the front end of the first center rod 55 is fixedly locked by the second oil-free copper sleeve 57. The front end of the center rod 55 is in close contact with the inner hole wall of the piston assembly 54 through the second oil-free copper sleeve 57, so that when the piston assembly 54 reciprocates, the first center rod 55 does not move or deflect with it, ensuring that the first center rod 55 is centered in the piston assembly 54 of the hydraulic cylinder; the second oil-free copper sleeve 57 has a plurality of through holes 571 in a circular array in the circumferential direction, and when the piston assembly 54 of the hydraulic cylinder reciprocates up and down, the air inside it can pass through, and no back pressure is generated, and the leaked hydraulic oil and the liquid in the piston rod cavity can flow out from the center hole of the center rod. By setting the first center rod 55 as a hollow structure, the first center rod 55 plays the role of fixing, pulling and supporting the core mold rod, and the drainage hole 551 is set at its front end to discharge and collect excess propellant. When the propellant flows into the inner cavity of the hollow piston rod, the reciprocating motion of the piston rod causes the propellant to flow out through the drainage hole 551 on the first center rod 55.

[0071] In a preferred embodiment, referring to Figure 9-12 The piston assembly 54 of the hydraulic cylinder 5 of the extruder includes a piston rod 541, a first piston 542 and a second piston 543 arranged at the bottom of the piston rod, the first piston 542 is sleeved on the outside of the second piston 543, the second piston 543 is sleeved on the outside of the first center rod 55, the piston rod 541 is a hollow piston rod, the inner wall surface of the piston rod 541 contacts the outer wall surface of the second oil-free copper sleeve 57, a first oil port 531 is provided on the side of the guide sleeve 53, and a second oil port 521 is provided on the side of the cylinder bottom 52.

[0072] Specifically, the piston assembly 54 includes a piston rod 541, a first piston 542 and a second piston 543, wherein the first piston 542 is sleeved on the outside of the second piston 543, and the second piston 543 is sleeved on the outside of the first center rod 55. The bottom end of the piston rod 541 is connected to the first piston 542, and the top end is connected to the extruder slider push rod 40, which is used to push out the Teflon tube; wherein the inner wall surface of the piston rod 541 contacts the outer wall surface of the second oil-free copper sleeve 57, and the piston rod 541 and the first center rod 55 are hollow piston rods. When reciprocating, the excess propellant will flow into the hollow piston rod 541 and flow into the first center rod through the drain hole 551 on the first center rod 55, and then flow out through the bottom of the hydraulic cylinder 52. The first oil port 531 and the second oil port 521 are used to introduce hydraulic oil into the hydraulic cylinder, and the reciprocating motion of the piston assembly 54 is realized by the action of the hydraulic oil.

[0073] In a preferred embodiment, referring to Figure 1 and Figure 2 The barrel 3 of the extruder is provided with a second center rod 31, the upper end of the second center rod 31 is connected to the core mold base 21, and the lower end is connected to the front end of the first center rod 55 of the hydraulic cylinder 5. The locking plate 126 is provided with an outer mold base 7, and the outer mold base 7 is provided with a core mold mounting hole 71 adapted to the core mold base 21. The core mold base 21 is screwed to the front end of the first center rod 55 and fixedly installed in the core mold mounting hole 71 to facilitate the extrusion of the blank.

[0074] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. An extruder, Features: It includes a locking module, a core mold assembly, a barrel, a guide column slider assembly, a hydraulic cylinder and a load-bearing frame. The locking module is provided with an outer mold base corresponding to the feed port of the barrel. The core mold assembly is installed on the top of the barrel and is located in the outer mold base. The barrel is arranged at the bottom of the locking module, the guide column slider assembly is arranged at the bottom of the barrel, the hydraulic cylinder is arranged at the bottom of the guide column slider assembly, and the load-bearing frame is installed on the outside of the hydraulic cylinder.

2. The extruder according to claim 1, Features: The clamping die set comprises a mounting plate, a clamping assembly arranged on the mounting plate, a cylinder arranged at the bottom of the mounting plate, a positioning rod arranged at one side of the cylinder, and a movable plate connecting the top of the positioning rod, the top of the telescopic rod of the cylinder and the top of the clamping assembly, the clamping assembly comprises a screw rod, a rotating universal head, a zipper chain and a collar connected in sequence, the screw rod is arranged on the mounting plate, the clamping assembly also comprises a clamping plate base and a clamping plate, the clamping plate base is fixed on the mounting plate, the clamping plate is screwed to the clamping plate base, a connecting rod is arranged on the side of the clamping plate, and the collar is sleeved on the connecting rod; The mounting plate is an "L"-shaped structure, and two screw holes are arranged on its side. One end of the screw rod is inserted into the screw hole and extends into the interior of the mounting plate. An air valve fixing plate and a manual air valve are arranged at the bottom of the mounting plate. The manual air valve is installed on the air valve fixing plate, and the manual air valve is connected to the air cylinder. The side ring array of the locking plate has a plurality of sockets, and two connecting rods are provided, and the two connecting rods are inserted into the sockets on the opposite sides; the movable plate is provided with a support rod, a U-shaped frame and a guide wheel on the side close to the locking assembly, the U-shaped frame is arranged at the top of the support rod, and the guide wheel is arranged in the U-shaped frame; the locking plate is connected to the movable plate through an outer mold, and the locking plate can rotate relative to the outer mold.

3. The extruder according to claim 1, Features: The core mold assembly comprises a core mold base, a shaping pin and a fastener, wherein the fastener fixes the shaping pin in the core mold base, a first through hole for the shaping pin to pass through is provided at the front end of the core mold base, a second through hole for the fastener to pass through is provided at the rear end of the core mold base, the first through hole is connected to the second through hole, and the inner diameter of the second through hole is larger than the inner diameter of the first through hole, and a limiting column is provided at the rear end of the shaping pin, the limiting column is provided in the second through hole and fixed by the fastener; The front end of the core mold base is conical and the rear end is cylindrical. The outer wall surface of the rear end of the core mold base is provided with an external thread, and the inner wall surface is provided with an internal thread. The diameter of the limiting column is larger than the diameter of the shaping needle, and larger than the inner diameter of the first through hole, and smaller than the inner diameter of the second through hole.

4. The extruder according to claim 1, Features: The guide post and slider assembly comprises a mounting seat, a guide post, a slider and a magnetostrictive displacement sensor, wherein the mounting seat comprises an upper seat and a lower seat, wherein the guide post is arranged between the upper seat and the lower seat, wherein the slider is arranged on the guide post, wherein the displacement sensor is arranged on the outer side of the upper seat, wherein a limit switch is arranged on the upper seat on one side of the displacement sensor, wherein a mounting bracket is arranged on one side of the slider, wherein a magnetic ring corresponding to the magnetostrictive displacement sensor is arranged at the front end of the mounting bracket, and a limit slider adapted to the limit switch is arranged on the side of the mounting bracket; The magnetostrictive displacement sensor is vertically arranged on the upper seat, and its lower end extends to the surface of the mounting seat. The upper part of the magnetostrictive displacement sensor is mounted on the upper seat by a first fixing fixture, and the lower part of the magnetostrictive displacement sensor is mounted on the mounting seat by a second fixing fixture and a first L-shaped bracket. The bottom surface of the first L-shaped bracket is connected to the surface of the lower seat, and the side surface is connected to the second fixing fixture; The mounting bracket is "L"-shaped, including a side bar and a cross bar, the magnetic ring is mounted on the cross bar, the magnetic ring is a semicircular magnetic ring, the inner side of which corresponds to the magnetostrictive displacement sensor, the side bar is provided with a through slot, the through slot is provided with a plurality of screws, some of the screws fix the mounting bracket on the slider, and the other part of the screws are used to fix the bracket for mounting the limit slider; There are four guide pillars, and four first oil-free copper sleeves are arranged on the slider. The first oil-free copper sleeves are arranged on the guide pillars and fixed on the slider. The upper seat, the lower seat and the middle of the slider are provided with round holes and positioning grooves for the piston rod of the hydraulic cylinder to pass through.

5. The extruder according to claim 1, Features: The hydraulic cylinder comprises a cylinder body, a cylinder bottom is provided at the bottom of the cylinder body, a guide sleeve is provided at the top, a piston assembly is provided in the cylinder body, a first center rod is provided in the piston assembly, the first center rod is a hollow center rod, a drainage hole is provided on the side, and the drainage hole is communicated with the center hole of the first center rod, the rear end of the first center rod is fixedly connected to the cylinder bottom by a hollow bolt, the front end of the first center rod is fixed in the piston assembly by a second oil-free copper sleeve, and the second oil-free copper sleeve has a plurality of third through holes in an annular array in the circumference direction; The piston assembly includes a piston rod, a first piston and a second piston arranged at the bottom of the piston rod, the first piston sleeve is outside the second piston, the second piston sleeve is outside the first center rod, the piston rod is a hollow piston rod, the inner wall surface of the piston rod is in contact with the outer wall surface of the second oil-free copper sleeve, the side surface of the guide sleeve is provided with a first oil port, and the side surface of the cylinder bottom is provided with a second oil port.

6. The extruder according to claim 1, Features: A second center rod is arranged in the barrel, the upper end of the second center rod is connected to the core mold base, and the lower end of the second center rod is connected to the front end of the first center rod of the hydraulic cylinder.

7. The extruder according to claim 1, Features: A core mold mounting hole matched with the core mold base is arranged inside the outer mold base, and the core mold mounting hole is a conical structure.

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