Table tennis ball thermoplastic forming machine

Abstract

The present invention relates to the field of molding facilities, and in particular to a table tennis thermoplastic molding machine, comprising a base, a propulsion member is installed at the front of the upper end of the base, a carrier frame is arranged above the base, the carrier frame is connected to the propulsion member, a guide bucket is obliquely extended at the upper edge of the rear end of the carrier frame, a plurality of through grooves are opened in a linear array at the upper rear edge of the guide bucket, a lower mold is installed at the middle of the upper end of the base, an upper mold is fitted at the upper end of the lower mold, a lifting member is arranged at the rear end of the base, and the upper mold is connected to the lifting member. The present invention reduces the labor intensity of workers, ensures the smooth demoulding of the molded table tennis balls, and also ensures the normal progress of the collection operation.

Description

Technical Field

[0001] The invention relates to the field of molding facilities, in particular to a table tennis ball thermoplastic molding machine. Background Art

[0002] When processing table tennis balls, melted table tennis ball raw materials need to be injected into a mold, which is cooled and formed in the mold to form a semicircular table tennis ball body. Subsequently, two semicircular table tennis balls are combined to obtain a finished table tennis ball. However, when the formed semicircular table tennis balls are taken out of the mold for collection, workers usually take them out manually for collection, and the operation process greatly increases the labor intensity of the workers. Summary of the invention

[0003] The purpose of the present invention is to solve the shortcomings of the background technology and to propose a table tennis ball thermoplastic forming machine.

[0004] In order to achieve the above purpose, the technical solution adopted by the present invention is: a table tennis thermoplastic molding machine, including a base, a propulsion member is installed at the front upper end of the base, a carrier frame is arranged above the base, the carrier frame is connected to the propulsion member, a guide bucket is obliquely extended at the upper edge of the rear end of the carrier frame, a plurality of through grooves are opened in a linear array at the upper rear edge of the guide bucket, a lower mold is installed in the middle of the upper end of the base, an upper mold is fitted on the upper end of the lower mold, a lifting member is arranged at the rear end of the base, and the upper mold is connected to the lifting member.

[0005] Preferably, support frames are fixedly installed on both sides of the lower mold, and the lower end of the support frame is fixed to the base, a plurality of cavities are opened in a linear array on the upper end surface of the lower mold, a plurality of lower push rods are installed through the linear array on the lower end of the lower mold, and the lower push rods are slidably matched with the lower mold, and a plurality of lower push claws extend in a circular array at the upper edge of the outer surface of the lower push rod.

[0006] Preferably, a No. 1 groove is provided on the inner bottom surface of the cavity, the lower top claw fits inside the No. 1 groove, the upper end surface of the lower top claw and the upper end surface of the lower push rod are coplanar with the inner surface of the cavity, a plurality of mold cores are extended in a linear array on the lower end surface of the upper mold, the mold cores are adapted to the cavity, a plurality of upper push rods are installed through the upper end linear array of the upper mold, and the upper push rods are slidably matched with the upper mold.

[0007] Preferably, a plurality of upper push claws are fixedly installed in a circular array at the lower edge of the outer surface of the upper push rod, a No. 2 groove is provided on the lower end surface of the mold core, the upper push claw fits inside the No. 2 groove, and the lower end surface of the upper push claw and the lower end surface of the upper push rod are coplanar with the outer surface of the mold core.

[0008] Preferably, a lower frame is embedded between the lower ends of the plurality of lower push rods, a lower spring is wound around the outer side of the lower push rod, the upper end of the lower spring is fixed to the lower end of the lower mold, and the lower end of the lower spring is fixed to the upper end of the lower frame, an upper carrier is embedded between the upper ends of the plurality of upper push rods, an upper spring is wound around the outer side of the upper push rod, the lower end of the upper spring is fixed to the upper end of the upper mold, and the upper end of the upper spring is fixed to the lower end of the upper carrier, a material receiving frame is placed in close contact with the interior of the carrier frame, and a handle is connected to the upper end of the material receiving frame.

[0009] Preferably, the lifting member includes a stand fixedly mounted on the rear upper end of the base platform, a servo motor is fixedly mounted at the upper edge of the front end of the stand, a threaded rod is fixedly mounted on the output end of the servo motor, the outer side of the threaded rod is threadedly connected to a threaded seat, a lifting platform is fixedly mounted on the front end of the threaded seat, an extension frame is fixedly mounted on the middle part of the front end of the lifting platform, a connecting frame is fixedly mounted on the upper part of the front end of the extension frame, the end of the connecting frame is fixed to the upper mold, and a bracket is fixedly mounted on the lower end of the extension frame.

[0010] Preferably, a carrier is rotatably mounted on both ends of the threaded rod, the carrier is fixed to the front end of the platform, guide rods are provided on both sides of the threaded rod, fixing blocks are inlaid on both ends of the guide rod, the fixing blocks are fixed to the front end of the platform, a guide seat is fitted on the outer surface of the guide rod, the front end of the guide seat is fixed to the rear end of the lifting platform, fixing frames are fixedly mounted on the upper parts of both sides of the platform, a pressure seat extends from the middle part of the front end of the fixing frame, a reinforcement frame is obliquely fixedly mounted on the upper end of the fixing frame, and the end of the reinforcement frame is fixed to the platform.

[0011] Preferably, the propulsion member includes two fixed seats symmetrically fixedly installed on the front part of the upper end of the base, a servo push cylinder is fixedly installed between the two fixed seats, the output end of the servo push cylinder is fixed to the carrier frame, the upper end of the fixed seat is inlaid with a guide column, the outer surface of the guide column is fitted with a guide ring, and the guide ring is fixed to the lower edge of the side of the carrier frame.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The servo push cylinder can be used to drive the carrier frame to move backward. At this time, the guide ring slides on the guide column to assist the carrier frame to move backward, so that the guide bucket on the carrier frame can move to the top of the lower mold to receive multiple demolded ping-pong balls, so that the ping-pong balls can fall along the inclined surface of the guide bucket into the receiving frame in the carrier frame and be collected uniformly. The process does not require workers to pick up and collect them one by one, thereby effectively reducing the labor intensity of workers.

[0014] 2. When the lifting platform moves upward and drives the upper mold to move away, the support seat just fits on the download frame, and then the lifting platform continues to move upward, so that the support seat can push the download frame to move up, thereby driving the lower ejector rod and the lower ejector claw to move upward to eject the ping-pong ball adsorbed in the cavity from the cavity. At this time, the upper carrier fits on the pressure seat, and then the lifting platform continues to move upward to allow the upper mold to continue to move upward. At this time, the upper ejector claw and the upper ejector rod remain stationary under the support of the pressure seat to push the ping-pong ball adsorbed on the mold core off the mold core and fall on the lower ejector claw below, thereby ensuring the smooth demolding of the molded ping-pong ball.

[0015] 3. With the help of the through grooves provided on the guide bucket, the lower ejector rod and the lower ejector claw can smoothly pass through the guide bucket, so that the table tennis balls ejected from the lower ejector claws can normally fall on the guide bucket and be received and collected without any mutual obstruction, thereby ensuring the normal progress of the collection operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a table tennis ball thermoplastic forming machine of the present invention;

[0017] Figure 2 A table tennis ball thermoplastic forming machine according to the present invention Figure 1 A magnified view of middle;

[0018] Figure 3 It is a schematic diagram of a table tennis ball thermoplastic forming machine of the present invention;

[0019] Figure 4 It is a schematic diagram of an upper mold of a table tennis ball thermoplastic molding machine of the present invention;

[0020] Figure 5 It is a schematic diagram of the lower mold of a table tennis ball thermoplastic molding machine of the present invention;

[0021] Figure 6 It is a schematic diagram of another perspective of a table tennis ball thermoplastic forming machine of the present invention;

[0022] Figure 7 A table tennis ball thermoplastic forming machine according to the present invention Figure 6 Enlarged view of middle B;

[0023] Figure 8 The present invention is an exploded view of a frame of a table tennis ball thermoplastic molding machine.

[0024] In the figure: 1. base; 2. stand; 3. servo motor; 4. threaded rod; 5. press seat; 6. lifting platform; 7. carrier frame; 8. guide bucket; 9. servo push cylinder; 10. fixed seat; 11. upper mold; 12. lower mold; 13. support frame; 14. upper carrier frame; 15. lower carrier frame; 16. connecting frame; 17. extension frame; 18. bracket; 19. cavity; 20. lower ejector rod; 21. lower ejector claw; 22. No. 1 groove; 23. upper ejector rod; 24. upper ejector claw; 25. No. 2 groove; 26. core; 27. guide column; 28. guide ring; 29. ​​lower spring; 30. upper spring; 31. carrier; 32. guide rod; 33. fixed frame; 34. reinforcement frame; 35. threaded seat; 36. guide seat; 37. fixed block; 38. receiving frame; 39. handle; 40. through groove. DETAILED DESCRIPTION

[0025] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0026] like Figure 1-Figure 8 The table tennis ball thermoplastic forming machine shown in the figure comprises a base 1, a propulsion member is installed at the front of the upper end of the base 1, a carrier frame 7 is arranged above the base 1, the carrier frame 7 serves to carry the material receiving frame 38, the carrier frame 7 is connected to the propulsion member, a guide bucket 8 is obliquely extended at the upper edge of the rear end of the carrier frame 7, the guide bucket 8 serves to receive the formed table tennis ball so that the table tennis ball can fall into the material receiving frame 38, a plurality of through grooves 40 are provided in a linear array at the rear edge of the upper end of the guide bucket 8, the through grooves 40 serve to allow the lower ejector rod 20 and the lower ejector claw 21 to pass through the guide bucket 8 smoothly, a lower mold 12 is installed at the middle of the upper end of the base 1, and the lower mold 12 is provided at the middle of the upper end of the base 1. The upper end of 12 is fitted with an upper mold 11. During molding, the melted table tennis ball raw material is injected between the upper mold 11 and the lower mold 12. After it is cooled and formed to form a semicircular table tennis ball, the servo motor 3 will work to drive the threaded rod 4 to rotate, so that the threaded seat 35 threadedly connected to the threaded rod 4 moves up, and then drives the lifting platform 6 to move up, thereby driving the upper mold 11 to move up and separate from the lower mold 12 for mold opening. Because injecting raw materials into the upper mold 11 and the lower mold 12 for cooling and molding is a prior art and has been widely used, it is not elaborated in detail here. A lifting member is provided at the rear of the upper end of the base 1, and the upper mold 11 is connected to the lifting member.

[0027] Support frames 13 are fixedly installed on both sides of the lower mold 12, and the support frames 13 play a role in supporting and fixing the lower mold 12. The lower end of the support frame 13 is fixed to the base 1, and a plurality of cavities 19 are opened in a linear array on the upper end surface of the lower mold 12. The cavities 19 and the mold core 26 cooperate to play a role in forming the raw materials. A plurality of lower ejector rods 20 are installed through the linear array at the lower end of the lower mold 12, and the lower ejector rods 20 are slidably matched with the lower mold 12. The lower ejector rods 20 play a role in ejecting the ping-pong ball adsorbed in the cavity 19. A plurality of lower ejector claws 21 extend in a circular array at the upper edge of the outer surface of the lower ejector rod 20, and the lower ejector claws 21 play a role in supporting the ejected ping-pong ball to prevent the ping-pong ball from falling.

[0028] A groove No. 1 22 is provided on the inner bottom surface of the cavity 19, and the lower push claw 21 fits inside the groove No. 1 22. The groove No. 1 22 serves to accommodate the lower push claw 21. The upper end surface of the lower push claw 21 and the upper end surface of the lower push rod 20 are coplanar with the inner surface of the cavity 19, which can avoid affecting the molding. A plurality of mold cores 26 are extended in a linear array on the lower end surface of the upper mold 11. The mold core 26 is adapted to the cavity 19. A plurality of upper push rods 23 are installed through the upper end linear array of the upper mold 11. The upper push rod 23 and the upper push claw 24 serve to push down the ping-pong ball adsorbed on the mold core 26, so that the ping-pong ball can fall on the lower push claw 21 and be supported, and the upper push rod 23 is slidably matched with the upper mold 11.

[0029] A plurality of upper claws 24 are fixedly installed in an annular array at the lower edge of the outer surface of the upper ejector rod 23. A second groove 25 is provided on the lower end surface of the mold core 26. The upper claw 24 fits inside the second groove 25. The second groove 25 serves to accommodate the upper claw 24. The lifting platform 6 moves upward, so that the bracket 18 can push the download frame 15, so that the download frame 15 can move upward, thereby driving the lower ejector rod 20 and the lower claw 21 to move upward, so as to absorb the mold cavity 19. The ping-pong ball inside is ejected from the cavity 19. At this time, the upper carrier 14 is attached to the pressure seat 5, and then the lifting platform 6 continues to move upward, allowing the upper mold 11 to continue to move upward. At this time, the upper ejector claw 24 and the upper ejector rod 23 remain stationary under the support of the pressure seat 5, so as to push the ping-pong ball adsorbed on the mold core 26 off the mold core 26 and fall on the lower ejector claw 21 below. The lower end surface of the upper ejector claw 24 and the lower end surface of the upper ejector rod 23 are coplanar with the outer surface of the mold core 26, which can avoid affecting the molding.

[0030] A download frame 15 is embedded between the lower ends of the plurality of lower ejector rods 20, and a lower spring 29 is wound around the outer side of the lower ejector rod 20. The download frame 15 is pushed by the lower spring 29 and the bracket 18. The upper end of the lower spring 29 is fixed to the lower end of the lower die 12, and the lower spring 29 pushes the lower ejector rod 20 so that the lower ejector rod 20 can be reset. The lower end of the lower spring 29 is fixed to the upper end of the download frame 15. An upper carrier 14 is embedded between the upper ends of the plurality of upper ejector rods 23, and the upper carrier 14 is pushed and pressed by the upper spring 30. The seat 5 is used for clamping and limiting. The outer side of the upper push rod 23 is wrapped with an upper spring 30. The lower end of the upper spring 30 is fixed to the upper end of the upper mold 11. The upper spring 30 pushes the upper push rod 23 so that the upper push rod 23 can be reset. The upper end of the upper spring 30 is fixed to the lower end of the upper carrier 14. A material receiving frame 38 is placed in a close fit inside the carrier frame 7. The material receiving frame 38 facilitates the removal of the collected ping-pong balls. The upper end of the material receiving frame 38 is connected to a handle 39. The handle 39 facilitates the holding of the material receiving frame 38.

[0031] The lifting member includes a stand 2 fixedly installed at the upper rear part of the base 1, a servo motor 3 is fixedly installed at the upper edge of the front end of the stand 2, the stand 2 plays a role in supporting the servo motor 3, a threaded rod 4 is fixedly installed at the output end of the servo motor 3, the servo motor 3 plays a role in driving the threaded rod 4 to rotate, the threaded rod 4 plays a role in driving the threaded seat 35 to move, the outer side of the threaded rod 4 is threadedly connected with a threaded seat 35, the threaded seat 35 plays a role in driving the lifting platform 6 to move, the front end of the threaded seat 35 is fixedly installed with the lifting platform 6, the middle part of the front end of the lifting platform 6 is fixedly installed with an extension frame 17, the extension frame 17 plays a role in fixing the bracket 18, the upper part of the front end of the extension frame 17 is fixedly installed with a connecting frame 16, the connecting frame 16 plays a role in fixing the extension frame 17 and the upper mold 11 together, the end of the connecting frame 16 is fixed to the upper mold 11, and the lower end of the extension frame 17 is fixedly installed with a bracket 18.

[0032] The two ends of the threaded rod 4 are rotatably installed with a carrier 31, which plays a role in carrying the threaded rod 4. The carrier 31 is fixed to the front end of the platform 2. Guide rods 32 are arranged on both sides of the threaded rod 4. Fixed blocks 37 are inlaid on both ends of the guide rod 32. The guide rods 32 and the guide seats 36 play a role in guiding the lifting platform 6. The fixed blocks 37 are fixed to the front end of the platform 2. The outer surface of the guide rod 32 is fitted with a guide seat 36. The fixed block 37 plays a role in fixing the guide rod 32. The front end of the guide seat 36 is fixed to the rear end of the lifting platform 6. Fixed frames 33 are fixedly installed on the upper parts of both sides of the platform 2. A pressure seat 5 is extended from the middle part of the front end of the fixed frame 33. The fixed frame 33 plays a role in fixing the pressure seat 5. A reinforcement frame 34 is fixedly installed on the upper end of the fixed frame 33 at an angle. The reinforcement frame 34 plays a role in strengthening the connection between the fixed frame 33 and the platform 2, and the end of the reinforcement frame 34 is fixed to the platform 2.

[0033] The propulsion member includes two fixed seats 10 symmetrically fixedly installed on the front upper end of the base 1. The fixed seats 10 play a supporting role. A servo push cylinder 9 is fixedly installed between the two fixed seats 10. The output end of the servo push cylinder 9 is fixed to the carrier frame 7. The servo push cylinder 9 plays a role in driving the carrier frame 7 to move. A guide column 27 is inlaid on the upper end of the fixed seat 10. A guide ring 28 is fitted on the outer surface of the guide column 27. The guide column 27 and the guide ring 28 play a role in guiding the carrier frame 7. The servo push cylinder 9 drives the carrier frame 7 to move backward. At this time, the guide ring 28 slides on the guide column 27 to assist the carrier frame 7 to move backward, so that the guide bucket 8 on the carrier frame 7 can move to the top of the lower mold 12. At this time, the lower push rod 20 passes through the through groove 40 on the guide bucket 8, so that the table tennis ball supported by the lower push claw 21 is located directly above the guide bucket 8, and the guide ring 28 is fixed to the lower edge of the side of the carrier frame 7.

[0034] During molding, the melted ping-pong ball raw material is injected between the upper mold 11 and the lower mold 12. After it is cooled and formed to form a semicircular ping-pong ball, the servo motor 3 will work to drive the threaded rod 4 to rotate, so that the threaded seat 35 threadedly connected to the threaded rod 4 moves up, and then drives the lifting platform 6 to move up, thereby driving the upper mold 11 to move up and separate from the lower mold 12 to open the mold. After the mold is opened, the bracket 18 just fits on the download frame 15, and then the lifting platform 6 continues to move up, so that the bracket 18 can push the download frame 15, so that the download frame 15 can move up, and then drive the lower ejector rod 20 and the lower ejector claw 21 to move up, so as to eject the ping-pong ball adsorbed in the cavity 19 from the cavity 19. At this time, the upper carrier 14 fits on the pressure seat 5, and then the lifting platform 6 continues to move up, allowing the upper mold 11 to continue to move up. At this time, the upper ejector claw 24 and the upper ejector rod 23 remain stationary under the support of the pressure seat 5 to eject the ping-pong ball adsorbed on the mold core 26. The ball is pushed down from the mold core 26 and falls on the lower push claw 21 below. Then the servo push cylinder 9 works to drive the carrier frame 7 to move backward. At this time, the guide ring 28 slides on the guide column 27 to assist the carrier frame 7 to move backward, so that the guide bucket 8 on the carrier frame 7 can move to the top of the lower mold 12. At this time, the lower push rod 20 passes through the through groove 40 on the guide bucket 8, so that the table tennis ball carried by the lower push claw 21 is located directly above the guide bucket 8, and then the lifting platform 6 moves downward to drive the upper mold 11. The lower push rod 20 and the lower push claw 21 are moved downward to reset. At this time, the lower push rod 20 and the lower push claw 21 pass through the through groove 40 on the guide bucket 8, so that the ping-pong balls supported on the lower push rod 20 and the lower push claw 21 can be pushed down by the guide bucket 8, so that the ping-pong balls can fall along the inclined surface of the guide bucket 8 into the receiving frame 38 in the carrier frame 7 and be collected uniformly. Then, the receiving frame 38 can be taken out of the carrier frame 7 by pulling it upward to be sent to the next step for processing.

[0035] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A table tennis ball thermoplastic forming machine, comprising a base (1), characterized in that: A propulsion member is installed at the front upper end of the base (1), a carrier frame (7) is arranged above the base (1), the carrier frame (7) is connected to the propulsion member, a guide bucket (8) is obliquely extended at the upper edge of the rear end of the carrier frame (7), a plurality of through grooves (40) are linearly arranged through the upper rear edge of the guide bucket (8), a lower mold (12) is installed at the middle of the upper end of the base (1), an upper mold (11) is fitted on the upper end of the lower mold (12), a lifting member is arranged at the rear upper end of the base (1), and the upper mold (11) is connected to the lifting member; Support frames (13) are fixedly mounted on both sides of the lower mold (12), the lower end of the support frame (13) is fixed to the base (1), a plurality of cavities (19) are provided in a linear array on the upper end surface of the lower mold (12), a plurality of lower ejector rods (20) are installed through the linear array on the lower end of the lower mold (12), and the lower ejector rods (20) are slidably matched with the lower mold (12), and a plurality of lower ejector claws (21) are extended in a circular array at the upper edge of the outer surface of the lower ejector rod (20); The inner bottom surface of the cavity (19) is provided with a first groove (22), the lower top claw (21) is fitted inside the first groove (22), the upper end surface of the lower top claw (21) and the upper end surface of the lower ejector rod (20) are coplanar with the inner surface of the cavity (19), a plurality of mold cores (26) are extended in a linear array from the lower end surface of the upper mold (11), the mold cores (26) are adapted to the cavity (19), a plurality of upper ejector rods (23) are installed through the upper end linear array of the upper mold (11), and the upper ejector rods (23) are slidably matched with the upper mold (11); A plurality of upper push claws (24) are fixedly mounted in an annular array at the lower edge of the outer surface of the upper push rod (23); a second groove (25) is provided on the lower end surface of the mold core (26); the upper push claws (24) fit into the interior of the second groove (25); and the lower end surface of the upper push claws (24), the lower end surface of the upper push rod (23) and the outer surface of the mold core (26) are coplanar; The lifting member comprises a stand (2) fixedly mounted on the rear upper end of the base (1); a servo motor (3) is fixedly mounted at the upper edge of the front end of the stand (2); a threaded rod (4) is fixedly mounted on the output end of the servo motor (3); the outer side of the threaded rod (4) is threadedly connected to a threaded seat (35); a lifting platform (6) is fixedly mounted on the front end of the threaded seat (35); a protruding frame (17) is fixedly mounted on the middle of the front end of the lifting platform (6); a connecting frame (16) is fixedly mounted on the upper front end of the protruding frame (17); an end of the connecting frame (16) is fixed to the upper mold (11); and a bracket (18) is fixedly mounted on the lower end of the protruding frame (17); A carrier (31) is rotatably mounted on both ends of the threaded rod (4), the carrier (31) is fixed to the front end of the platform (2), guide rods (32) are arranged on both sides of the threaded rod (4), fixing blocks (37) are inlaid on both ends of the guide rod (32), the fixing blocks (37) are fixed to the front end of the platform (2), a guide seat (36) is fitted on the outer surface of the guide rod (32), the front end of the guide seat (36) is fixed to the rear end of the lifting platform (6), a fixing frame (33) is fixedly mounted on the upper part of both sides of the platform (2), a pressure seat (5) extends from the middle part of the front end of the fixing frame (33), a reinforcement frame (34) is obliquely fixedly mounted on the upper end of the fixing frame (33), and the end of the reinforcement frame (34) is fixed to the platform (2); The propulsion member comprises two fixed seats (10) symmetrically fixedly mounted on the front upper end of the base (1); a servo push cylinder (9) is fixedly mounted between the two fixed seats (10); an output end of the servo push cylinder (9) is fixed to the carrier frame (7); a guide column (27) is embedded in the upper end of the fixed seat (10); a guide ring (28) is fitted on the outer surface of the guide column (27); and the guide ring (28) is fixed to the lower edge of the side of the carrier frame (7).

2. A table tennis ball thermoplastic forming machine according to claim 1, characterized in that: A lower frame (15) is embedded between the lower ends of the plurality of lower ejector rods (20), a lower spring (29) is wound around the outer side of the lower ejector rod (20), the upper end of the lower spring (29) is fixed to the lower end of the lower mold (12), and the lower end of the lower spring (29) is fixed to the upper end of the lower frame (15); an upper frame (14) is embedded between the upper ends of the plurality of upper ejector rods (23), an upper spring (30) is wound around the outer side of the upper ejector rod (23), the lower end of the upper spring (30) is fixed to the upper end of the upper mold (11), and the upper end of the upper spring (30) is fixed to the lower end of the upper frame (14); a material receiving frame (38) is placed in close contact with the interior of the carrier frame (7), and a handle (39) is connected to the upper end of the material receiving frame (38).

Images