A metal casting rapid demoulding device

Abstract

The present invention relates to the technical field of metal processing, and discloses a metal casting rapid demoulding device, comprising a base plate, on which a plurality of groups of molds are arranged, each group of molds is divided into two half molds, a plurality of support plates are fixedly installed on the base plate, a cylinder is fixedly installed on the front of each support plate, the output shaft of each cylinder movably penetrates each support plate, a square box is fixedly installed on each half-mold in each group of molds, and the two corresponding square boxes can be respectively sleeved on two round blocks by moving the two half molds in the mold from top to bottom, and then the half mold in the front can be driven to move backward by the cylinder, so that the two half molds can be merged, so that the user can inject molten metal into the mold cavity of the mold, and when the metal is cooled, the half mold in the front can be driven to move forward by the cylinder, so that the two half molds can be quickly separated, so that it is convenient for the user to perform demoulding.

Description

Technical Field

[0001] The invention relates to the technical field of metal processing, in particular to a metal casting rapid demoulding device. Background Art

[0002] A mold is a tool that uses a specific shape to shape a blank (solid or liquid) into a product with a certain shape and size under the action of an external force. The mold is extremely widely used in forging, stamping, powder metallurgy pressing, pressure casting, and compression and injection molding of engineering plastics, rubber, ceramics and other products. The mold is generally divided into two parts, which are divided into a movable mold and a fixed mold according to the state of motion, and divided into a concave mold and a convex mold according to the shape. The types of molds include steel molds, iron molds, tin molds, wooden molds, plaster molds, mud molds, etc., and some metal devices need to be cast and formed using molds during production. However, most of the existing molds have two half molds fixed with bolts and other fixings, which makes installation and demoulding more cumbersome and affects work efficiency. Summary of the invention

[0003] In view of the shortcomings of the prior art, the present invention provides a metal casting rapid demolding device, which has the advantages of being able to quickly separate two half-molds, thereby facilitating demolding for users, etc., and solves the problem that some metal devices need to be cast and formed using molds during production, but the two half-molds of most existing molds are fixed with bolts and other fixings, which makes installation and demolding more cumbersome and affects work efficiency.

[0004] In order to achieve the above-mentioned purpose of quickly separating the two half molds, thereby facilitating the demolding process for users, the present invention provides the following technical solutions: a metal casting rapid demolding device, comprising a base plate, a plurality of groups of molds are arranged on the base plate, each group of molds is divided into two half molds, a plurality of support plates are fixedly installed on the base plate, a cylinder is fixedly installed on the front side of each support plate, the output shaft of each cylinder movably penetrates each support plate, a square box is fixedly installed on each half film in each group of molds, each square box has no lower wall, each square box side wall is provided with a vertical groove, a round block is arranged in each square box, a connecting block is fixedly installed on each round block, a plurality of connecting blocks in the front of the plurality of connecting blocks are respectively fixedly connected to the rear end of the output shaft of each cylinder, a plurality of groups of support bars are fixedly installed on the upper side of the base plate, a square plate is fixedly installed on each group of support bars, and each square plate is respectively connected to a plurality of connecting blocks in the rear of the plurality of connecting blocks.

[0005] Preferably, a circular groove is provided on each half membrane in each group of the molds, an annular wall groove is provided on the inner wall of each circular groove, a metal ring is movably connected in each annular wall groove, a blocking rod is fixedly installed on each metal ring, each blocking rod is movably connected to each circular groove, a connecting plate is fixedly installed on the output shaft of each cylinder, a group of long strips is fixedly installed on each connecting plate, each support strip is provided with a notch, each long strip is movably connected to each notch, an extrusion strip is fixedly installed on each group of long strips, an extrusion rod is slidably penetrated on each extrusion strip, a group of limiting rings is fixedly installed on each extrusion rod, each extrusion strip is respectively arranged between each group of limiting rings, and a magnet a is fixedly sleeved on each extrusion rod.

[0006] Preferably, each of the connecting plates is provided with a slot on the lower side, a telescopic round box is movably connected in each slot, a fixed tube is movably connected in each telescopic round box, each fixed tube is fixedly connected to each support plate, a pressure spring a is movably connected in each fixed tube, the rear end of each pressure spring a is fixedly connected to the rear inner wall of each telescopic round box, the front end of each pressure spring a is fixedly connected to the rear side of the support plate, a magnet b is fixedly installed on the rear end of each telescopic round box, and two air grooves are provided on the inner wall of each telescopic round box.

[0007] Preferably, a soft ring b is fixedly mounted on the rear side of each magnet b, a soft ring a is fixedly mounted on the front end of each magnet a, and each soft ring a is fixedly sleeved on the extrusion rod.

[0008] Preferably, each of the metal rings has an annular groove on its outer wall, each annular groove has a connecting tube movably connected therein, each annular wall groove has a threaded groove on its inner wall, each connecting tube is threadedly connected to each threaded groove, and each connecting tube has a hexagonal block fixedly sleeved thereon.

[0009] Preferably, each of the square plates is provided with four slide grooves, each of which is movably connected to a limit strip, a mounting plate is provided in front of each square plate, each mounting plate is respectively fixedly connected to each limit strip, and the front of each mounting plate is respectively fixedly connected to several connecting blocks at the rear among the several connecting blocks.

[0010] Preferably, a plurality of pressure springs b are fixedly installed on the rear side of each mounting plate, each pressure spring b is fixedly connected to each square plate, each pressure spring b is movably connected with a stabilizing rod, each stabilizing rod is fixedly connected to the rear side of each mounting plate, and each stabilizing rod movably passes through each square plate.

[0011] Preferably, a square frame is fixedly passed through the bottom plate, a trapezoidal box is fixedly installed on the lower side of the square frame, and a discharge trough is provided on the lower wall of the trapezoidal box.

[0012] Compared with the prior art, the present invention provides a metal casting rapid demoulding device, which has the following beneficial effects:

[0013] The metal casting rapid demoulding device can respectively sleeve the two corresponding square boxes on the two round blocks by moving the two half molds in the mold from top to bottom, and then drive the half mold in the front to move backward through the cylinder, so that the two half molds can be merged, so that the user can inject molten metal into the mold cavity of the mold, and when the metal is cooled, the half mold in the front can be driven by the cylinder to move forward, so that the two half molds can be quickly separated, so that the user can conveniently perform demoulding.

[0014] The metal casting rapid demoulding device can drive the front half mold forward by the cylinder, and at the same time drive the connecting plate forward, so that the long strip can move forward, thereby driving the extrusion bar to move forward, and thus driving the extrusion rod forward. When the extrusion rod moves to the blocking rod on the rear half mold and continues to move forward, it will drive the blocking rod forward to fall off the forming device attached to the rear, so that the mold can be demoulded quickly and automatically.

[0015] The metal casting quick demoulding device drives the front half mold to move forward through the cylinder, which squeezes the telescopic round box to move backward. When the telescopic round box moves backward and squeezes the fixed pipe, it stops moving. The half mold continues to move forward, which causes the blocking rod in the front to generate pressure through the squeezing of the telescopic round box. In this way, when the metal device is attached to the front half mold, it can be squeezed down, so that it can be demoulded quickly and automatically.

[0016] The metal casting rapid demoulding device can make magnets a and magnet b approach corresponding metal rings respectively by placing two half molds and driving the cylinder to extend and retract back and forth, so that magnets a and magnet b can adsorb corresponding metal rings respectively, and thus corresponding blocking rods can be restored to their original positions by making magnets a and magnet b cooperate with the extrusion rod and the pulling of the telescopic round box respectively to avoid affecting metal forming.

[0017] The metal casting rapid demoulding device can prevent the metal ring from being damaged by excessive impact force generated by the metal ring approaching too fast when the magnet a absorbs the corresponding metal ring, and can prevent the metal ring from being damaged by excessive impact force generated by the metal ring approaching too fast when the magnet b absorbs the corresponding metal ring, through the soft ring b.

[0018] The metal casting quick demoulding device can fix the connecting pipe through the threaded groove to prevent the corresponding metal ring from moving too much and causing the metal ring and the blocking rod to fall off. The hexagonal block can facilitate the user to use tools to rotate the connecting pipe back and forth, so that the user can easily disassemble and install the connecting pipe.

[0019] 7. The metal casting quick demoulding device uses the elastic force of the pressure spring b, so that after the front half mold is moved backward by the cylinder to contact the rear half mold, the front half mold can be continuously moved. In this way, the two half molds can be tightly fitted together by the pressure continuously applied by the pressure spring b. In this way, the two half molds can be fixed while avoiding damage caused by excessive hard contact pressure. The falling metal device can be caught by the square frame, and then the metal device will be moved to the trapezoidal box. Finally, the metal device will slide along the inclined surface of the trapezoidal box and move downward through the discharge chute, so as to facilitate the user to collect the metal device later. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the front three-dimensional structure of the present invention;

[0021] Figure 2 For the present invention Figure 1 Schematic diagram of the three-dimensional structure of the middle support plate;

[0022] Figure 3 For the present invention Figure 1 Schematic diagram of the three-dimensional structure of the middle connecting plate;

[0023] Figure 4 For the present invention Figure 1 Schematic diagram of the three-dimensional structure of the middle mold;

[0024] Figure 5 For the present invention Figure 1 A schematic diagram of the three-dimensional structure of the support bar;

[0025] Figure 6 For the present invention Figure 2 A schematic diagram of the cross-sectional three-dimensional structure of the middle telescopic round box;

[0026] Figure 7 For the present invention Figure 1 A schematic diagram of the cross-sectional three-dimensional structure of the middle mold;

[0027] Figure 8 For the present invention Figure 1 Schematic diagram of the cross-sectional three-dimensional structure of the square frame.

[0028] In the figure: 1, bottom plate; 2, extrusion strip; 3, support strip; 4, square plate; 5, square box; 6, cylinder; 7, support plate; 8, trapezoidal box; 9, square frame; 10, mold; 11, long strip; 12, extrusion rod; 13, limit ring; 14, magnet a; 15, soft ring a; 16, round block; 18, telescopic round box; 19, notch; 20, connecting plate; 21, stabilizing rod; 22, pressure spring b; 2 3. Slide groove; 24. Limiting strip; 26. Notch; 27. Fixed pipe; 28. Mounting plate; 29. ​​Connecting block; 30. Vertical groove; 31. Discharge chute; 32. Blocking rod; 33. Metal ring; 34. Connecting pipe; 35. Hexagonal block; 36. Annular groove; 37. Threaded groove; 38. Magnet b; 39. Soft ring b; 40. Pressure spring a; 41. Air groove; 42. Circular groove; 43. Annular wall groove. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below in conjunction with the accompanying drawings, wherein the same components are represented by the same figure numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower", "bottom surface" and "top surface" used in the following description refer to directions in the drawings, and the words "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figure 1-Figure 8The present invention provides a technical solution: a metal casting rapid demoulding device, comprising a bottom plate 1, a plurality of groups of molds 10 are arranged on the bottom plate 1, each group of molds 10 is divided into two half molds, a plurality of support plates 7 are fixedly installed on the bottom plate 1, a cylinder 6 is fixedly installed on the front of each support plate 7, the output shaft of each cylinder 6 movably penetrates each support plate 7, a square box 5 is fixedly installed on each half mold in each group of molds 10, each square box 5 has no lower wall, and a vertical groove 30 is opened on the side wall of each square box 5, a round block 16 is arranged in each square box 5, and a connecting block 29 is fixedly installed on each round block 16, and a plurality of connecting blocks 29 in the front of the plurality of connecting blocks 29 are respectively fixedly connected to the rear end of the output shaft of each cylinder 6, and a plurality of connecting blocks 29 in the front of the plurality of connecting blocks 29 are respectively fixedly connected to the rear end of the output shaft of each cylinder 6, and a plurality of connecting blocks 29 in the upper side of the bottom plate 1 are fixedly installed on the bottom plate 1. Several groups of support bars 3 are fixedly installed, and each group of support bars 3 is fixedly installed with a square plate 4, each square plate 4 is respectively connected to several connecting blocks 29 at the rear among several connecting blocks 29, and the two corresponding square boxes 5 can be respectively sleeved on the two round blocks 16 by moving the two half molds in the mold 10 from top to bottom, and then the half mold in the front can be driven to move backward by the cylinder 6, so that the two half molds can be merged, so that the user can inject molten metal into the mold cavity of the mold 10, and when the metal is cooled, the half mold in the front can be driven to move forward by the cylinder 6, so that the two half molds can be quickly separated, so that it is convenient for the user to perform demoulding. A circular groove 42 is opened on each half film in each group of molds 10, and each The inner wall of each circular groove 42 is provided with an annular wall groove 43, each annular wall groove 43 is movably connected with a metal ring 33, each metal ring 33 is fixedly mounted with a blocking rod 32, each blocking rod 32 is movably connected with each circular groove 42, a connecting plate 20 is fixedly mounted on the output shaft of each cylinder 6, a group of long strips 11 is fixedly mounted on each connecting plate 20, each support strip 3 is provided with a notch 26, each long strip 11 is movably connected with each notch 26, an extrusion strip 2 is fixedly mounted on each group of long strips 11, an extrusion rod 12 is slidably penetrated on each extrusion strip 2, a group of limiting rings 13 is fixedly mounted on each extrusion rod 12, each extrusion strip 2 is respectively arranged between each group of limiting rings 13, and each extrusion rod 12 A magnet a14 is fixedly sleeved on each of the connecting plates 20. When the front half mold is driven forward by the cylinder 6, the connecting plate 20 can be driven forward at the same time, so that the long strip 11 can be moved forward, thereby the extrusion strip 2 can be moved forward, and the extrusion rod 12 can be driven forward. When the extrusion rod 12 moves to the blocking rod 32 on the rear half mold and continues to move forward, the blocking rod 32 can be driven forward to remove the forming device attached to the rear, so that the mold can be demoulded quickly and automatically. A notch 19 is provided on the lower side of each connecting plate 20, and a telescopic round box 18 is movably connected in each notch 19, and a fixed tube 27 is movably connected in each telescopic round box 18. Each fixed tube 27 is fixedly connected to each support plate 7, respectively.A pressure spring a40 is movably connected in each fixed tube 27, and the rear end of each pressure spring a40 is fixedly connected to the rear inner wall of each telescopic round box 18, and the front end of each pressure spring a40 is fixedly connected to the rear side of the support plate 7. A magnet b38 is fixedly installed at the rear end of each telescopic round box 18. Two air grooves 41 are provided on the inner wall of each telescopic round box 18. When the front half mold is driven forward by the cylinder 6, the telescopic round box 18 is squeezed to move backward. When the telescopic round box 18 moves backward and squeezes the fixed tube 27, it stops moving. If the half mold continues to move forward, the squeezing of the telescopic round box 18 will cause the blocking rod 32 in the front to generate pressure, so that the metal device can be squeezed down when it is attached to the front half mold. Thereby, the mold can be demoulded quickly and automatically. After the two half molds are placed, the cylinder 6 is driven to extend and retract back and forth, so that the magnet a14 and the magnet b38 can be close to the corresponding metal ring 33 respectively, so that the magnet a14 and the magnet b38 can absorb the corresponding metal ring 33 respectively. In this way, the corresponding blocking rod 32 can be restored to its original position by making the magnet a14 and the magnet b38 cooperate with the extrusion rod 12 and the telescopic round box 18 to pull, so as to avoid affecting the metal forming. A soft ring b39 is fixedly installed on the rear side of each magnet b38, and a soft ring a15 is fixedly installed on the front end of each magnet a14. Each soft ring a15 is fixedly sleeved on the extrusion rod 12 respectively. The soft ring a15 can avoid the metal ring when the magnet a14 absorbs the corresponding metal ring 33. 33 approaches too fast and the impact force generated is too large to damage the magnet a14. The soft ring b39 can prevent the metal ring 33 from approaching too fast and the impact force generated is too large to damage the magnet b38 when the magnet b38 adsorbs the corresponding metal ring 33. The outer wall of each metal ring 33 is provided with an annular groove 36, and a connecting tube 34 is movably connected in each annular groove 36. The inner wall of each annular wall groove 43 is provided with a threaded groove 37, and each connecting tube 34 is threadedly connected to each threaded groove 37 respectively. A hexagonal block 35 is fixedly sleeved on each connecting tube 34. After the connecting tube 34 is fixed by the threaded groove 37, the corresponding metal ring 33 can be prevented from moving too much and causing the metal ring 33 to fall off from the blocking rod 32. The hexagonal block 35 can It is convenient for users to use tools to rotate the connecting tube 34 back and forth, so that it is convenient for users to disassemble and install the connecting tube 34. Four slide grooves 23 are opened on each square plate 4, and each slide groove 23 is movably connected to the limit strip 24. A mounting plate 28 is arranged in front of each square plate 4, and each mounting plate 28 is respectively fixedly connected to each limit strip 24. The front of each mounting plate 28 is respectively fixedly connected to several connecting blocks 29 at the rear among several connecting blocks 29. Several pressure springs b22 are fixedly installed on the rear side of each mounting plate 28, and the rear of each pressure spring b22 is respectively fixedly connected to each square plate 4. A stabilizing rod 21 is movably connected in each pressure spring b22, and each stabilizing rod 21 is respectively fixedly connected to the rear side of each mounting plate 28.Each stabilizing rod 21 is movable and penetrates each square plate 4, and a square frame 9 is fixedly penetrated on the bottom plate 1. A trapezoidal box 8 is fixedly installed on the lower side of the square frame 9. A discharge chute 31 is provided on the lower wall of the trapezoidal box 8. Through the elastic force of the pressure spring b22, the front half mold can be moved backward by the cylinder 6 to contact the rear half mold, and then the front half mold can be moved continuously. In this way, the pressure continuously applied by the pressure spring b22 can make the two half molds fit tightly together. In this way, the two half molds can be fixed while avoiding damage caused by excessive hard contact pressure. The falling metal device can be caught by the square frame 9, and then the metal device will be moved into the trapezoidal box 8. Finally, the metal device will slide along the inclined surface of the trapezoidal box 8 and move downward through the discharge chute 31, so that it is convenient for users to collect the metal devices later.

[0032] When in use, the first step is: by moving the two half molds in the mold 10 from top to bottom, the corresponding two square boxes 5 can be respectively sleeved on the two round blocks 16, and then the cylinder 6 can be used to drive the half mold in the front to move backward, so that the two half molds can be merged, so that the user can inject molten metal into the mold cavity of the mold 10, and when the metal is cooled, the cylinder 6 can be used to drive the half mold in the front to move forward, so that the two half molds can be quickly separated, so that it is convenient for the user to perform demolding.

[0033] Step 2: When the front half mold is driven forward by the cylinder 6, the connecting plate 20 can be driven forward at the same time, so that the long strip 11 can be moved forward, thereby driving the extrusion strip 2 to move forward, so that the extrusion rod 12 can be driven forward. When the extrusion rod 12 moves to the blocking rod 32 on the rear half mold and continues to move forward, it will drive the blocking rod 32 to move forward and remove the molded device attached to the rear, so that it can be demolded quickly and automatically.

[0034] Step 3: When the front half mold is driven forward by the cylinder 6, the telescopic round box 18 will be squeezed to move backward. When the telescopic round box 18 moves backward and squeezes the fixed tube 27, it will stop moving. Continuing to move the half mold forward will cause pressure on the blocking rod 32 in the front through the squeezing of the telescopic round box 18, so that when the metal device is attached to the front half mold, it can be squeezed down, so that it can be quickly and automatically demolded. After placing the two half molds, the cylinder 6 can be driven to stretch back and forth to make the magnet a14 and the magnet b38 approach the corresponding metal ring 33 respectively, so that the magnet a14 and the magnet b38 can absorb the corresponding metal ring 33 respectively, so that the corresponding blocking rod 32 can be restored to its original position by making the magnet a14 and the magnet b38 cooperate with the pulling of the squeezing rod 12 and the telescopic round box 18 to avoid affecting the metal forming.

[0035] Step 4: The soft ring a15 can be used to prevent the metal ring 33 from approaching too quickly and causing excessive impact force to damage the magnet a14 when the magnet a14 absorbs the corresponding metal ring 33. The soft ring b39 can be used to prevent the metal ring 33 from approaching too quickly and causing excessive impact force to damage the magnet b38 when the magnet b38 absorbs the corresponding metal ring 33.

[0036] Step 5: After fixing the connecting tube 34 through the threaded groove 37, the corresponding metal ring 33 can be prevented from moving too much and causing the metal ring 33 and the blocking rod 32 to fall off. The hexagonal block 35 can facilitate the user to use tools to rotate the connecting tube 34 back and forth, so that the user can easily disassemble and install the connecting tube 34.

[0037] Step 6: Through the elastic force of the pressure spring b22, the front half mold can be moved backward by the cylinder 6 until the front half mold contacts the rear half mold, and then the front half mold can be moved. In this way, the pressure continuously applied by the pressure spring b22 can make the two half molds fit tightly. In this way, the two half molds can be fixed while avoiding damage caused by excessive hard contact pressure. The falling metal device can be caught by the square frame 9, and then the metal device will be moved to the trapezoidal box 8. Finally, the metal device will slide along the inclined surface of the trapezoidal box 8 and move downward through the discharge chute 31, so as to facilitate the user to collect the metal devices later.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A metal casting rapid demoulding device, comprising a base plate (1), on which a plurality of groups of molds (10) are arranged, each group of molds (10) being divided into two half molds, characterized in that: A plurality of support plates (7) are fixedly mounted on the bottom plate (1), a cylinder (6) is fixedly mounted on the front of each support plate (7), the output shaft of each cylinder (6) movably passes through each support plate (7), a square box (5) is fixedly mounted on each half mold in each group of molds (10), each square box (5) has no lower wall, a vertical groove (30) is provided on the side wall of each square box (5), a round block (16) is arranged in each square box (5), a connecting block (29) is fixedly mounted on each round block (16), a plurality of connecting blocks (29) located in the front of the plurality of connecting blocks (29) are respectively fixedly connected to the rear end of the output shaft of each cylinder (6), and a plurality of groups of support bars (3) are fixedly mounted on the upper side of the bottom plate (1), each group of A square plate (4) is fixedly mounted on each support bar (3), each square plate (4) is respectively connected to a plurality of connection blocks (29) located at the rear of the plurality of connection blocks (29), a circular groove (42) is opened on each half mold in each group of molds (10), an annular wall groove (43) is opened on the inner wall of each circular groove (42), a metal ring (33) is movably connected in each annular wall groove (43), a blocking rod (32) is fixedly mounted on each metal ring (33), each blocking rod (32) is movably connected to each circular groove (42), a connection plate (20) is fixedly mounted on the output shaft of each cylinder (6), a group of long strips (11) is fixedly mounted on each connection plate (20), and each support bar (3) is opened A notch (26) is provided, each long strip (11) is movably connected to each notch (26), each group of long strips (11) is fixedly mounted with an extrusion strip (2), each extrusion strip (2) is slidably penetrated with an extrusion rod (12), each extrusion rod (12) is fixedly mounted with a group of limiting rings (13), each extrusion strip (2) is respectively arranged between each group of limiting rings (13), each extrusion rod (12) is fixedly sleeved with a magnet a (14), each connecting plate (20) is provided with a notch (19) on the lower side, each notch (19) is movably connected with a telescopic round box (18), each telescopic round box (18) is movably connected with a fixed tube (27), each fixed tube (27) is respectively fixed to each support plate (7) and each supporting plate (7) is fixedly mounted with a telescopic round box (18). A pressure spring a (40) is movably connected in each fixed tube (27), a rear end of each pressure spring a (40) is fixedly connected to the rear inner wall of each telescopic round box (18), a front end of each pressure spring a (40) is fixedly connected to the rear side of the support plate (7), a magnet b (38) is fixedly installed at the rear end of each telescopic round box (18), two air grooves (41) are provided on the inner wall of each telescopic round box (18), a soft ring b (39) is fixedly installed on the rear side of each magnet b (38), a soft ring a (15) is fixedly installed on the front end of each magnet a (14), each soft ring a (15) is fixedly sleeved on the extrusion rod (12), and an annular groove (36) is provided on the outer wall of each metal ring (33).Each annular groove (36) is movably connected to a connecting tube (34), the inner wall of each annular wall groove (43) is provided with a threaded groove (37), each connecting tube (34) is threadedly connected to each threaded groove (37), each connecting tube (34) is fixedly sleeved with a hexagonal block (35), each square plate (4) is provided with four slide grooves (23), each slide groove (23) is movably connected to a limit bar (24), a mounting plate (28) is provided in front of each square plate (4), each mounting plate (28) is fixedly connected to each limit bar (24), and each mounting plate (28) is connected to a plurality of connecting blocks (25) on the front side. 9) are fixedly connected to a plurality of connecting blocks (29) at the rear of each mounting plate (28), a plurality of pressure springs b (22) are fixedly installed on the rear side of each mounting plate (28), the rear side of each pressure spring b (22) is fixedly connected to each square plate (4), a stabilizing rod (21) is movably connected inside each pressure spring b (22), each stabilizing rod (21) is fixedly connected to the rear side of each mounting plate (28), each stabilizing rod (21) movably penetrates each square plate (4), a square frame (9) is fixedly penetrated on the bottom plate (1), a trapezoidal box (8) is fixedly installed on the lower side of the square frame (9), and a discharge trough (31) is provided on the lower wall of the trapezoidal box (8).

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