A screw plastic-lined die-casting device

Abstract

A screw plastic-lined die pressing device, the present invention relates to the technical field of die pressing devices, including a bottom die and an upper die installed at the upper end of the bottom die. A receiving groove is provided in the bottom die, and a die core is fixedly installed in the receiving groove. A sliding groove is provided on the side surface of the bottom die, and a rectangular groove is provided on the bottom surface of the bottom die. Insert slots are provided on both inner wall surfaces of the receiving groove. By moving the push block downward, a thrust will be exerted on the two contact blocks, causing the two contact blocks to move towards each other. By moving the two contact blocks away from each other, the two sliding rods will be driven to move away from each other. By moving the two sliding rods away from each other, the two protective shells will be driven to move away from each other, causing the gap formed between the two protective shells to expand, that is, the forming cavity expands. At this time, both sides of the formed part will be separated from the inner walls of the two protective shells, and the user can take out the formed part from the receiving groove, making the demolding more convenient and the operation more convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of die pressing devices, and in particular to a screw lining die pressing device. Background Art

[0002] A mold is a variety of tools used in industrial production to obtain the required products by means of injection molding, blow molding, extrusion, die casting or forging, smelting, stamping, etc. In short, a mold is a tool for making formed articles. Such a tool is composed of various parts, and different molds are composed of different parts. It mainly realizes the processing of the outer shape of the article by changing the physical state of the formed material. It has the title of "mother of industry".

[0003] Currently, in the actual use process of the screw lining die pressing device on the market, it is not convenient to take out the formed parts in the forming cavity, and the demoulding is relatively inconvenient, which reduces the production efficiency of the screw lining. Therefore, there is an urgent need for a screw lining die pressing device. Summary of the Invention

[0004] In order to overcome the deficiencies of the prior art, the present invention provides a screw lining die pressing device.

[0005] To solve the above technical problems, the present invention provides the following technical solution: A screw lining die pressing device includes a bottom die and an upper die installed at the upper end of the bottom die. A receiving groove is provided in the bottom die, and a die core is fixedly installed in the receiving groove. A sliding groove is provided on the side surface of the bottom die, and a rectangular groove is provided on the bottom surface of the bottom die. Insertion slots are provided on both inner wall surfaces of the two sides of the receiving groove. Two protective shells are movably arranged in the receiving groove, and the two protective shells are respectively arranged on both sides of the die core. At the upper and lower ends of each protective shell, insertion blocks are fixedly installed, and each insertion block is respectively movably inserted into the insertion slot. The two protective shells form a forming cavity. A shaking structure is provided on the bottom die, and the shaking structure includes a motor, a rotating shaft and a pushing block. The rotating shaft is rotatably installed on the bottom die, and the output shaft of the motor is fixedly connected to the end of the rotating shaft. A convex block is fixedly installed on the rotating shaft, and a first bevel gear is fixedly installed on the rotating shaft. A sphere is fixedly installed at the upper end of the pushing block, and the pushing block is arranged below the convex block. The bottom surface of the convex block is in contact with the top surface of the sphere. A jacking structure is provided on the bottom die, and the jacking structure includes a jacking rod and a first rotating rod. A pushing ring is movably installed in the receiving groove, and the pushing ring is movably sleeved on the die core. The jacking rod is U-shaped, and the jacking rod is slidably arranged in the rectangular groove. The two ends on the upper side of the jacking rod are respectively movably inserted into the receiving groove, and there is a certain gap between the two ends on the upper side of the rectangular groove and the bottom surface of the pushing ring.

[0006] Preferably, sliding rods are fixedly installed at both ends of the two protective shells facing away from each other. The two sliding rods both pass through the bottom die movably. Circular plates are fixedly installed on the two sliding rods. First springs are fixedly installed on the two circular plates. The two circular plates are fixedly connected to the outer ends of the bottom die through the circular plates respectively.

[0007] Preferably, contact blocks are fixedly installed at both ends of the two protective shells facing each other. The two contact blocks and the push block are all trapezoidal. The push block is movably inserted between the two contact blocks. The two side surfaces of the push block are respectively attached to the surfaces of the two contact blocks.

[0008] Preferably, a slider is fixedly installed at the end of the push block. A second spring is fixedly installed at the bottom end of the slider. The slider is movably inserted into the chute. The slider is fixedly connected to the bottom surface of the inner wall of the chute through the second spring.

[0009] Preferably, a housing is fixedly installed at the bottom end of the bottom die. Three limiting rods are fixedly installed on the housing. Each limiting rod is respectively movably inserted into the two contact blocks and the push block.

[0010] Preferably, the first rotating rod is rotatably installed on the housing. A second bevel gear is fixedly installed at the upper end of the first rotating rod. The first bevel gear meshes with the second bevel gear. A first gear is fixedly installed at the bottom end of the first rotating rod.

[0011] Preferably, a second rotating rod and a third rotating rod are rotatably installed at the bottom end of the bottom die. A second gear is fixedly installed on the second rotating rod. A third gear is fixedly installed on the third rotating rod. The first gear, the second gear and the third gear are all arranged inside the housing.

[0012] Preferably, the third rotating rod is arranged in a rectangular groove. The third rotating rod penetrates through the top rod and is threadedly connected to the top rod.

[0013] Preferably, the first gear meshes with the second gear. The third gear meshes with the second gear. The motor is fixedly installed on the housing.

[0014] Preferably, the two protective shells are both arc-shaped. Magnet blocks one are fixedly installed at both ends of the upper side of the top rod. Magnet blocks two adapted to the magnet blocks one are fixedly installed at the bottom end of the push ring.

[0015] Compared with the prior art, the beneficial effects that the present invention can achieve are:

[0016] First, when the pushing block moves downward, a thrust will be exerted on the two contact blocks, causing the two contact blocks to move towards each other. When the two contact blocks move away from each other, they will drive the two sliding rods to move away from each other. When the two sliding rods move away from each other, they will drive the two protective shells to move away from each other, expanding the gap formed between the two protective shells, that is, expanding the forming cavity. At this time, both sides of the formed part will disengage from the inner walls of the two protective shells, and the user can take out the formed part from the receiving groove, making the demolding more convenient and the operation more convenient.

[0017] Second, the continuous rotation of the rotating shaft and the convex block will cause the two protective shells to move closer to and away from each other, making it easier for the formed part in the receiving groove to disengage from the two protective shells. When demolding is not required, the two protective shells close to form a seal. The device has a reasonable structural design and is more convenient to use.

[0018] Third, since the third rotating rod is threadedly connected to the ejector rod, the rotation of the third rotating rod will drive the ejector rod to move upward. When the ejector rod moves upward, it will push the pushing ring, causing the pushing ring to move in the receiving groove. The movement of the pushing ring will push the formed part in the receiving groove, making it easier for the formed part to disengage from the receiving groove, making the demolding more convenient and improving the demolding efficiency of the die-casting device.

[0019] Fourth, when the pushing ring needs to be reset, since a second magnet block is fixedly installed at the bottom end of the pushing ring, and first magnet blocks are fixedly installed at both ends on the upper side of the first rotating rod, when the output shaft of the motor reverses, the ejector rod can drive the pushing ring to move upward, and the pushing ring can be reset, avoiding movement interference and ensuring the stable operation of the shaking structure and the pushing structure. The die-casting device has a reasonable structural design and high practicality.

[0020] Fifth, plug blocks are fixedly installed at both ends of the protective shell, and the two plug blocks are respectively slidably arranged in the slots, which plays a role in limiting the position of the protective shell, avoiding the situation of position deviation of the two protective shells, enabling the two protective shells to close and seal, and ensuring the stable use of the die-casting device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of the die-casting device of the present invention;

[0022] Figure 2 is a schematic structural diagram of the contact block of the present invention;

[0023] Figure 3 is a schematic structural diagram of the bottom die cut open of the present invention;

[0024] Figure 4 is a schematic structural diagram of the protective shell of the present invention;

[0025] Figure 5 is a schematic structural diagram of the first rotating rod of the present invention;

[0026] Figure 6 This is a schematic structural diagram of the pushing block of the present invention;

[0027] Figure 7 For the present invention Figure 1 A magnified schematic structural diagram at position A in the figure.

[0028] Wherein: 1, bottom die; 11, receiving groove; 12, sliding groove; 13, rectangular groove; 14, slot; 15, outer shell; 16, limiting rod; 2, upper die; 3, protective shell; 31, inserting block; 32, sliding rod; 33, circular plate; 34, first spring; 35, contact block; 4, motor; 5, rotating shaft; 51, convex block; 52, first bevel gear; 6, pushing block; 61, sphere; 62, slider; 63, second spring; 7, ejector rod; 71, pushing ring; 8, first rotating rod; 81, second bevel gear; 82, first gear; 83, second rotating rod; 84, second gear; 85, third rotating rod; 86, third gear. Specific embodiments

[0029] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments. However, the following embodiments are only the preferred embodiments of the present invention, not all of them. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative work all belong to the protection scope of the present invention. The experimental methods in the following embodiments are all conventional methods unless otherwise specified. The materials, reagents, etc. used in the following embodiments can all be obtained from commercial channels unless otherwise specified.

[0030] Such as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7As shown in the figure, a screw plastic-lined die pressing device includes a bottom die 1 and an upper die 2 installed at the upper end of the bottom die 1. A receiving groove 11 is provided in the bottom die 1, and a die core is fixedly installed in the receiving groove 11. A sliding groove 12 is formed on the side surface of the bottom die 1, and a rectangular groove 13 is formed on the bottom surface of the bottom die 1. Insertion slots 14 are formed on both inner wall surfaces of the two sides of the receiving groove 11. Two protective shells 3 are movably arranged in the receiving groove 11, and the two protective shells 3 are respectively arranged on both sides of the die core. Plug blocks 31 are fixedly installed at both the upper and lower ends of each protective shell 3, and each plug block 31 is respectively movably inserted into the insertion slot 14. A forming cavity is formed between the two protective shells 3. A shaking structure is arranged on the bottom die 1, and the shaking structure includes a motor 4, a rotating shaft 5, and a pushing block 6. The rotating shaft 5 is rotatably installed on the bottom die 1, and the output shaft of the motor 4 is fixedly connected to the end of the rotating shaft 5. A convex block 51 is fixedly installed on the rotating shaft 5, and a first bevel gear 52 is fixedly installed on the rotating shaft 5. A sphere 61 is fixedly installed at the upper end of the pushing block 6, and the pushing block 6 is arranged below the convex block 51. The bottom surface of the convex block 51 is in contact with the top surface of the sphere 61. A jacking structure is arranged on the bottom die 1, and the jacking structure includes a jacking rod 7 and a first rotating rod 8. A pushing ring 71 is movably installed in the receiving groove 11, and the pushing ring 71 is movably sleeved on the die core. The jacking rod 7 is U-shaped, and the jacking rod 7 is slidably arranged in the rectangular groove 13. Both ends of the upper side of the jacking rod 7 are movably inserted into the receiving groove 11. There is a certain gap between the upper side ends of the rectangular groove 13 and the bottom surface of the pushing ring 71. Slide rods 32 are fixedly installed at both ends of the two protective shells 3 facing away from each other, and the two slide rods 32 both movably penetrate through the bottom die 1. Circular plates 33 are fixedly installed on the two slide rods 32, and first springs 34 are fixedly installed on the two circular plates 33. The two circular plates 33 are respectively fixedly connected to the outer end of the bottom die 1 through the circular plates 33. Contact blocks 35 are fixedly installed at both ends of the two protective shells 3 facing each other. The two contact blocks 35 and the pushing block 6 are all trapezoidal. The pushing block 6 is movably inserted between the two contact blocks 35. The two side surfaces of the pushing block 6 are respectively in contact with the surfaces of the two contact blocks 35. A slider 62 is fixedly installed at the end of the pushing block 6, and a second spring 63 is fixedly installed at the bottom end of the slider 62. The slider 62 is movably inserted into the sliding groove 12, and the slider 62 is fixedly connected to the bottom surface of the inner wall of the sliding groove 12 through the second spring 63. An outer shell 15 is fixedly installed at the bottom end of the bottom die 1, and three limiting rods 16 are fixedly installed on the outer shell 15. Each limiting rod 16 is respectively movably inserted into the two contact blocks 35 and the pushing block 6. The first rotating rod 8 is rotatably installed on the outer shell 15, and a second bevel gear 81 is fixedly installed at the upper end of the first rotating rod 8. The first bevel gear 52 is meshed with the second bevel gear 81. A first gear 82 is fixedly installed at the bottom end of the first rotating rod 8. A second rotating rod 83 and a third rotating rod 85 are rotatably installed at the bottom end of the bottom die 1. A second gear 84 is fixedly installed on the second rotating rod 83, and a third gear 86 is fixedly installed on the third rotating rod 85. Fix the upper die 2 to the bottom die 1 with bolts, and then convey the raw material from the injection hole on the upper die 2 to the receiving groove 11. After the formed part in the receiving groove 11 is cooled and solidified,The user removes the upper mold 2, then starts the motor 4 to make the rotating shaft 5 rotate. The rotation of the rotating shaft 5 drives the cam 51 to rotate. When the protruding part of the cam 51 contacts the top surface of the sphere 61, a force is applied to the sphere 61, causing the push block 6 to move downward. The downward movement of the push block 6 applies a thrust to the two contact blocks 35, causing the two contact blocks 35 to move away from each other. The mutual movement of the two contact blocks 35 away from each other drives the two sliding rods 32 to move away from each other. The mutual movement of the two sliding rods 32 away from each other drives the two protective shells 3 to move away from each other, expanding the gap formed between the two protective shells 3, that is, expanding the molding cavity. At this time, both sides of the molded part will be separated from the inner walls of the two protective shells 3, and the user can take out the molded part from the receiving groove 11, making the demolding more convenient and the operation more convenient. When the protruding part of the cam 51 does not contact the top surface of the sphere 61, the push block 6 is reset by the elastic reset action of the second spring 63, and the two contact blocks 35 are reset by the elastic reset action of the first spring 34. The continuous rotation of the rotating shaft 5 and the cam 51 makes the two protective shells 3 move closer to and away from each other, making it easier for the molded part in the receiving groove 11 to be separated from the two protective shells 3. When demolding is not required, the two protective shells 3 are closed to form a seal. The structure of this device is reasonably designed and more convenient to use. During the demolding process, the rotating shaft 5 continues to rotate. While the rotating shaft 5 rotates, it drives the first bevel gear 52 to rotate. Since the first bevel gear 52 meshes with the second bevel gear 81, the first rotating rod 8 rotates. The rotation of the first rotating rod 8 drives the first gear 82, the second rotating rod 83, the second gear 84, and the third gear 86 to rotate. The rotation of the third gear 86 drives the third rotating rod 85 to rotate. Since the third rotating rod 85 is threadedly connected to the ejector rod 7, the rotation of the third rotating rod 85 drives the ejector rod 7 to move upward. The upward movement of the ejector rod 7 pushes the push ring 71, causing the push ring 71 to move in the receiving groove 11. The movement of the push ring 71 pushes the molded part in the receiving groove 11, making it easier for the molded part to be separated from the receiving groove 11, making the demolding more convenient and improving the demolding efficiency of this die pressing device. Since there is a certain gap between the two ends of the upper side of the ejector rod 7 and the push ring 71, after the two protective shells 3 are separated from the molded part, the push ring 71 will push the molded part upward. When the push ring 71 needs to be reset, since a magnet block two is fixedly installed at the bottom end of the push ring 71 and magnet blocks one are fixedly installed at the two ends of the upper side of the first rotating rod 8, the output shaft of the motor 4 rotates in reverse, and the ejector rod 7 can drive the push ring 71 to move upward, enabling the push ring 71 to be reset, avoiding movement interference and ensuring the stable operation of this shaking structure and pushing structure. The structure of this die pressing device is reasonably designed and highly practical. The two ends of the protective shell 3 are fixedly installed with insertion blocks 31, and the two insertion blocks 31 are respectively slidably arranged in the insertion slots 14, which plays a role in limiting the position of the protective shell 3 and preventing the two protective shells 3 from shifting in position.The two protective shells 3 can be closed and sealed, ensuring the stable use of the die pressing device. The first gear 82, the second gear 84, and the third gear 86 are all arranged inside the outer shell 15. The third rotating rod 85 is arranged inside the rectangular groove 13. The third rotating rod 85 penetrates through the ejector rod 7 and is threadedly connected to the ejector rod 7. The first gear 82 meshes with the second gear 84, and the third gear 86 meshes with the second gear 84. The motor 4 is fixedly installed on the outer shell 15. The two protective shells 3 are both arc-shaped. Magnets 1 are fixedly installed at both upper ends of the ejector rod 7. A magnet 2 adapted to the magnet 1 is fixedly installed at the bottom end of the push ring 71.

[0031] During use, the upper die 2 is fixedly connected to the lower die 1 through bolts. Then, the raw material is conveyed into the accommodating groove 11 through the injection hole on the upper die 2. After the molded part in the accommodating groove 11 is cooled and solidified, the user removes the upper die 2. Then, the motor 4 is started to make the rotating shaft 5 rotate. The rotation of the rotating shaft 5 will drive the convex block 51 to rotate. When the protruding part of the convex block 51 contacts the top surface of the sphere 61, a force will be applied to the sphere 61, causing the push block 6 to move downward. The downward movement of the push block 6 will apply a thrust to the two contact blocks 35, causing the two contact blocks 35 to move away from each other. The mutual movement of the two contact blocks 35 away from each other will drive the two sliding rods 32 to move away from each other. The mutual movement of the two sliding rods 32 away from each other will drive the two protective shells 3 to move away from each other, expanding the gap formed between the two protective shells 3, that is, expanding the molding cavity. At this time, both sides of the molded part will be separated from the inner walls of the two protective shells 3, and the user can take out the molded part from the accommodating groove 11. The demolding is more convenient and the operation is more convenient.

[0032] When the protruding part of the convex block 51 does not contact the top surface of the sphere 61, the push block 6 is reset by the elastic reset function of the second spring 63, and the two contact blocks 35 are reset by the elastic reset function of the first spring 34. The continuous rotation of the rotating shaft 5 and the convex block 51 will cause the two protective shells 3 to move closer to and away from each other, making it easier for the molded part in the accommodating groove 11 to be separated from the two protective shells 3. When demolding is not required, the two protective shells 3 are closed to form a seal. The device has a reasonable structural design and is more convenient to use.

[0033] During the demoulding process, the rotating shaft 5 continues to rotate, and the rotating shaft 5 rotates while the first bevel gear 52 is mobilized to rotate. Since the first bevel gear 52 is meshed with the second bevel gear 81, the first rotating rod 8 is rotated, and the rotation of the first rotating rod 8 drives the first gear 82, the second rotating rod 83, the second gear 84 and the third gear 86 to rotate. The rotation of the third gear 86 drives the third rotating rod 85 to rotate. Since the third rotating rod 85 is threadedly connected with the ejector rod 7, the rotation of the third rotating rod 85 drives the ejector rod 7 to move upward. The upward movement of the ejector rod 7 drives the push ring 71, so that the push ring 71 moves in the receiving groove 11. The movement of the push ring 71 drives the molded part in the receiving groove 11, so that the molded part is easier to separate from the receiving groove 11, making demoulding more convenient and improving the demoulding efficiency of the die pressing device.

[0034] Because there is a certain gap between the two ends of the upper side of the push rod 7 and the push ring 71, the push ring 71 will push the molded part upward after the two protective shells 3 are separated from the molded part. When the push ring 71 needs to be reset, since the bottom end of the push ring 71 is fixedly installed with magnet block 2, and the two ends of the upper side of the first rotating rod 8 are fixedly installed with magnet block 1, the output shaft of the motor 4 is reversed, the push rod 7 can drive the push ring 71 to move upward, and the push ring 71 can be reset, thus avoiding motion interference and ensuring the stable operation of the shaking structure and the pushing structure. The structural design of the molding device is reasonable and practical.

[0035] Insert blocks 31 are fixedly installed at both ends of the protective shell 3. The two insert blocks 31 are respectively slidably set in the slots 14, which limit the position of the protective shell 3 and avoid the position displacement of the two protective shells 3, so that the two protective shells 3 can be closed and sealed, ensuring the stable use of the molding device.

[0036] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A screw plastic-lined die pressing device, comprising a bottom die (1) and an upper die (2) installed at the upper end of the bottom die (1). Characterized in that a receiving groove (11) is provided in the bottom die (1), a die core is fixedly installed in the receiving groove (11), a sliding groove (12) is formed on the side surface of the bottom die (1), a rectangular groove (13) is formed on the bottom surface of the bottom die (1), inserting slots (14) are formed on both inner wall surfaces of the two sides of the receiving groove (11), two protective shells (3) are movably arranged in the receiving groove (11), the two protective shells (3) are respectively arranged on both sides of the die core, insertion blocks (31) are fixedly installed at both the upper and lower ends of each protective shell (3), each insertion block (31) is respectively movably inserted into the inserting slot (14), and a forming cavity is formed by the two protective shells (3); a shaking structure is arranged on the bottom die (1), the shaking structure comprises a motor (4), a rotating shaft (5) and a pushing block (6), the rotating shaft (5) is rotatably installed on the bottom die (1), the output shaft of the motor (4) is fixedly connected with the end of the rotating shaft (5), a convex block (51) is fixedly installed on the rotating shaft (5), a first bevel gear (52) is fixedly installed on the rotating shaft (5), a sphere (61) is fixedly installed at the upper end of the pushing block (6), the pushing block (6) is arranged below the convex block (51), and the bottom surface of the convex block (51) is attached to the top surface of the sphere (61); a jacking structure is arranged on the bottom die (1), the jacking structure comprises a jacking rod (7) and a first rotating rod (8), a pushing ring (71) is movably installed in the receiving groove (11), the pushing ring (71) is movably sleeved on the die core, the jacking rod (7) is U-shaped, the jacking rod (7) is slidably arranged in the rectangular groove (13), both ends of the upper side of the jacking rod (7) are movably inserted into the receiving groove (11), and there is a certain gap between both ends of the upper side of the rectangular groove (13) and the bottom surface of the pushing ring (71); slide rods (32) are fixedly installed at both opposite ends of the two protective shells (3), the two slide rods (32) both movably penetrate through the bottom die (1), circular plates (33) are fixedly installed on the two slide rods (32), first springs (34) are fixedly installed on the two circular plates (33), and the two circular plates (33) are respectively fixedly connected with the outer end of the bottom die (1) through the circular plates (33); contact blocks (35) are fixedly installed at both opposite ends of the two protective shells (3), the two contact blocks (35) and the pushing block (6) are all trapezoidal, the pushing block (6) is movably inserted between the two contact blocks (35), and the two side surfaces of the pushing block (6) are respectively attached to the surfaces of the two contact blocks (35); a slider (62) is fixedly installed at the end of the pushing block (6), a second spring (63) is fixedly installed at the bottom end of the slider (62), the slider (62) is movably inserted into the sliding groove (12), and the slider (62) is fixedly connected with the inner wall bottom surface of the sliding groove (12) through the second spring (63); The first rotating rod (8) is rotatably mounted on the outer shell (15). A second bevel gear (81) is fixedly mounted at the upper end of the first rotating rod (8). The first bevel gear (52) meshes with the second bevel gear (81). A first gear (82) is fixedly mounted at the bottom end of the first rotating rod (8).

2. A screw lining plastic pressing die device according to claim 1, characterized in that The bottom end of the bottom die (1) is fixedly mounted with an outer shell (15). Three limiting rods (16) are fixedly mounted on the outer shell (15). Each of the limiting rods (16) is respectively inserted into two contact blocks (35) and a pushing block (6) movably.

3. A screw lining plastic pressing die device according to claim 1, characterized in that The bottom end of the bottom die (1) is rotatably mounted with a second rotating rod (83) and a third rotating rod (85). A second gear (84) is fixedly mounted on the second rotating rod (83). A third gear (86) is fixedly mounted on the third rotating rod (85). The first gear (82), the second gear (84) and the third gear (86) are all arranged inside the outer shell (15).

4. A screw lining plastic pressing die device according to claim 3, characterized in that The third rotating rod (85) is arranged in a rectangular groove (13). The third rotating rod (85) penetrates through the ejector rod (7) and is threadedly connected with the ejector rod (7).

5. A screw lining plastic pressing die device according to claim 4, characterized in that, The first gear (82) meshes with the second gear (84). The third gear (86) meshes with the second gear (84). The motor (4) is fixedly mounted on the outer shell (15).

6. A screw lining plastic pressing die device according to claim 1, characterized in that Both of the protective shells (3) are arc-shaped. Magnet blocks one are fixedly mounted at both ends of the upper side of the ejector rod (7). Magnet blocks two adapted to the magnet blocks one are fixedly mounted at the bottom end of the pushing ring (71).

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