An automatic mold changing table for 3D molding

Abstract

This application relates to an automatic mold changing table for 3D molding, comprising a three-layer mounting frame including a top plate, a middle plate, a bottom plate, and connecting columns. The top plate, middle plate, and bottom plate are sequentially fixedly connected by the connecting columns. The mold changing device includes a mold body, a worktable, and a drive mechanism. Multiple mold bodies are provided, one of which is a working mold, and the others are replacement molds. A lifting slot is provided in the center of one side of the top surface of the middle plate. The worktable is located at the lifting slot and is lifted. A square protrusion is fixedly provided in the center of the top surface of the middle plate, and strip-shaped barriers are fixedly provided around the perimeter of the top surface of the middle plate, forming a U-shaped groove between the strip-shaped barriers and the square protrusion. The drive mechanism includes a lifting component and a sliding component. The lifting component drives the lifting of the upper and lower working molds, and the sliding component drives the mold body within the U-shaped groove to move along the U-shaped path of the groove. This application has the advantages of facilitating mold changing and improving mold changing efficiency.

Description

Technical Field

[0001] This application relates to the technical field of molds, and in particular to an automatic mold changing table for 3D molding. Background Technology

[0002] Molds are widely used in all aspects of the machinery field. Currently, when changing large molds in production workshops, forklifts are generally used for mold changing, or overhead cranes are used to place the molds on mold changing trolleys before changing them. This involves a large range of motion and occupies a lot of space. Small molds are generally changed manually.

[0003] Different product models require different molds during production to be pressed into finished products of various shapes. Because the molds produce a wide variety of parts, a large number of mold types are used. Existing mold-changing methods result in extremely frequent mold changes for operators, low efficiency, large space requirements, high labor intensity for operators, and long mold-changing times, making mold changes inconvenient. Therefore, improving mold-changing efficiency is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] To facilitate mold changing and improve mold changing efficiency, this application provides an automatic mold changing table for 3D molding.

[0005] The 3D molding automatic mold changing table provided in this application adopts the following technical solution:

[0006] An automatic mold changing table for 3D molding includes a three-layer mounting frame, which includes a top plate, a middle plate, a bottom plate, and connecting columns. The top plate, the middle plate, and the bottom plate are fixedly connected in sequence by the connecting columns, and the bottom plate is provided with two pieces.

[0007] The mounting frame is provided with a left station and a right station, and each of the left station and the right station is provided with a mold changing device. The mold changing devices on the left station and the right station are arranged symmetrically to each other.

[0008] The mold changing device includes a mold body, a worktable, and a drive mechanism; multiple mold bodies are provided, one of which is a working mold and the others are replacement molds. The working mold includes an upper working mold and a lower working mold. The upper working mold and the lower working mold are lifted and lowered on a mounting frame. The lifting directions of the upper working mold and the lower working mold are opposite. The replacement mold includes a replacement upper mold and a replacement lower mold.

[0009] A lifting slot is provided in the middle of one side of the top surface of the intermediate plate. The worktable is located in the lifting slot and is lifted. The lower working mold is fixedly mounted on the worktable to realize the lifting of the lower working mold. A square protrusion is fixedly provided in the middle of the top surface of the intermediate plate. Strip-shaped barriers are fixedly provided around the top surface of the intermediate plate. The strip-shaped barriers and the square protrusion form a U-shaped groove. The lifting slot is located in the U-shaped groove. The mold body fills the U-shaped groove along the path of the U-shaped groove. Filling gaps are reserved in the U-shaped groove. The number of mold bodies that can be filled in the groove is n, so the actual number of mold bodies in the groove is n-2. The worktable can be raised and lowered until its top surface is flush with the bottom wall of the groove. The mold bodies in the groove can move sequentially along the groove's groove path. Therefore, the position of the filling gap can change with the movement of the mold bodies. The mold bodies that move to the worktable are the working molds, and the remaining mold bodies are the replacement molds. The working molds and replacement molds can be interchanged.

[0010] The driving mechanism includes a lifting component and a sliding component. The lifting component is used to drive the upper working mold and the lower working mold to rise and fall, and the sliding component is used to drive the mold body in the groove to move along the groove path.

[0011] By adopting the above technical solution, when pressing a product using a mold, the product is placed on the lower working mold, and then the upper and lower working molds are driven to move closer to each other by a lifting component to achieve mold closing and pressing. When the product needs to be pressed into other shapes, a mold change is required.

[0012] During mold changing, the working mold and the replacement mold slide one by one in the groove through the sliding component until the required replacement mold slides onto the worktable to become the working mold. Compared with manual mold changing, it is easier to change molds and helps to improve mold changing efficiency.

[0013] Optionally, the sliding assembly includes a first driving cylinder, a second driving cylinder, a third driving cylinder, and a fourth driving cylinder disposed on the mounting bracket. The first driving cylinder, the second driving cylinder, and the third driving cylinder are all located below the intermediate plate, and the fourth driving cylinder is disposed on the side of the intermediate plate.

[0014] The piston rods of the first, second, third, and fourth drive cylinders are all parallel to the intermediate plate. A first push plate is fixedly connected to the piston rod of the first drive cylinder, a second push plate is fixedly connected to the piston rod of the second drive cylinder, and a third push plate is fixedly connected to the piston rod of the third drive cylinder. A first push groove, a second push groove, and a third push groove are respectively opened at the triangular part of the bottom wall of the groove. The first push groove, the second push groove, and the third push groove are respectively used for the first push plate, the second push plate, and the third push plate to pass through and move. The first push groove and the second push groove are located at two corners near the worktable. The first push groove is perpendicular to the second push groove and the third push groove. The second push groove is parallel to the third push groove, and the length direction of the second push groove is towards the worktable.

[0015] The top surface of the strip-shaped enclosure has three clearance slots, all of which are connected to the U-shaped groove. The three clearance slots are also connected to the first push slot, the second push slot, and the third push slot, respectively. The piston rod of the fourth drive cylinder passes through the side wall of the strip-shaped enclosure. The mold body is pushed along the U-shaped groove by the first push plate, the second push plate, the third push plate, and the piston rod of the fourth drive cylinder, thereby realizing the switching between the working mold and the replacement mold. When the first push plate, the second push plate, and the third push plate are not in use, they are located in the clearance slots.

[0016] By adopting the above technical solution, during mold changing, the first drive cylinder, the second drive cylinder, the third drive cylinder and the fourth drive cylinder are activated respectively to control the piston rods of the first push plate, the second push plate, the third push plate and the fourth drive cylinder to push the replacement mold to move one by one, thereby realizing the switching between the working mold and the replacement mold. In addition, the setting of the clearance slot provides storage space for unused push plates and avoids interference with the replacement mold moving in the groove.

[0017] Optionally, the mounting bracket is provided with an upper mold fixing assembly and a lower mold fixing assembly. The upper mold fixing assembly includes an upper mold fixing plate and an upper mold L-plate. The upper mold L-plate is fixedly disposed on both sides of the bottom surface of the upper mold fixing plate, and the two sides of the upper mold L-plate are arranged opposite each other and form an upper mold slot. The lower mold L-plate is fixedly disposed on both sides of the bottom surface of the lower mold fixing plate, and the two sides of the lower mold L-plate are arranged opposite each other and form a lower mold slot.

[0018] The upper working mold is locked in the upper mold slot, the lower working mold is locked in the lower mold slot, the lifting assembly is used to drive the upper mold fixing plate and the lower mold fixing plate to rise and fall, and the worktable is the top surface of the lower mold fixing plate;

[0019] During mold changing, the lower mold fixing plate is raised and lowered until its top surface is flush with the bottom wall of the groove. The upper mold fixing plate is lowered to a position close to the upper mold fixing plate. The first push plate, the second push plate, and the third push plate push the mold body one by one. Finally, the second push plate pushes the replacement mold toward the worktable. The replacement mold pushes out the original working mold on the worktable. The replacement upper mold of the replacement mold is locked in the upper mold slot to become the working upper mold. The replacement lower mold of the replacement mold is locked in the lower mold slot to become the working lower mold. Then, the upper mold fixing plate rises, and the working upper mold and working lower mold open. After the product to be molded is placed on the working lower mold, the mold is closed and pressed by raising and lowering the working upper mold and working lower mold.

[0020] By adopting the above technical solution, mold changing and fixing of the upper and lower working molds can be carried out simultaneously, making the mold changing operation simple and convenient.

[0021] Optionally, the lifting assembly includes a top lifting cylinder, a bottom lifting cylinder, a top connecting cylinder, a top connecting plate, a bottom connecting cylinder, and a bottom connecting plate. The top lifting cylinder is fixedly installed on the top surface of the top plate. A connecting plate is provided on the top surface of the upper mold fixing plate. The top connecting plate is fixedly connected to the top surface of the upper mold fixing plate through the connecting plate. The top connecting cylinder is fixedly connected to the top surface of the top connecting plate and is threadedly connected to the piston rod of the top lifting cylinder.

[0022] The bottom lifting cylinder is fixedly installed on the bottom surface of the base plate. An installation component is provided on the bottom surface of the lower mold fixing plate. The bottom connecting plate is fixedly connected to the bottom surface of the lower mold fixing plate through the installation component. The bottom connecting cylinder is fixedly connected to the bottom surface of the bottom connecting plate and is threadedly connected to the piston rod of the bottom lifting cylinder.

[0023] By adopting the above technical solution, the upper mold fixing plate and the lower mold fixing plate can be raised and lowered by activating the top lifting cylinder and the bottom lifting cylinder, thereby realizing the raising and lowering of the working upper mold and the working lower mold, and the installation is convenient.

[0024] Optionally, the installation assembly includes a hollow riser block and an installation plate. The top of the hollow riser block is fixedly connected to the bottom surface of the installation plate and the lower mold fixing plate. A connecting plate is also provided at the bottom of the hollow riser block. The bottom of the hollow riser block is connected to the top surface of the bottom connecting plate through the connecting plate. A reinforcing partition is fixedly provided inside the hollow riser block.

[0025] By adopting the above technical solution, the hollow riser block helps to connect the bottom lifting cylinder and the lower mold fixing plate. The hollow riser block has a simple structure and strong stability. In addition, a reinforcing partition is set to further increase the structural strength of the hollow riser block.

[0026] Optionally, a guide rod is fixedly connected to the connecting plate, and a conduit passes through and is fixedly connected to the top plate and the bottom plate, with the conduit correspondingly sleeved on the guide rod.

[0027] By adopting the above technical solutions, the stability of the lifting and lowering of the upper and lower working molds can be improved.

[0028] Optionally, the guide rods are located at the four corners of the connecting plate, and two guide rods on the same side are fixedly connected by a connecting handle.

[0029] By adopting the above technical solution, the guide rods are set at the four corners of the connecting plate, which further improves the stability of the lifting of the upper and lower working molds; the two guide rods on the same side are fixedly connected by the connecting handle, which makes it easy to hold the handle to install the guide rods, and also improves the stability of the bottom connection of the guide rods.

[0030] Optionally, the first driving cylinder and the fourth driving cylinder are respectively disposed on both sides of the width direction of the middle plate, and the piston rods of the first driving cylinder and the fourth driving cylinder are disposed opposite to each other. The second driving cylinder and the third driving cylinder are located directly below the middle plate and on the side of the hollow raising block away from the first driving cylinder. The second driving cylinder and the third driving cylinder are parallel to each other and both are perpendicular to the first driving cylinder. The piston rods of the second driving cylinder and the third driving cylinder are oriented in opposite directions.

[0031] Optionally, the bottoms of the first push plate, the second push plate, and the third push plate are respectively fixedly connected to a first docking plate, a second docking plate, and a third docking plate. A protruding block is fixedly connected to the piston rod of the first drive cylinder, the second drive cylinder, and the third drive cylinder. The first docking plate, the second docking plate, and the third docking plate are provided with protruding grooves for the protruding blocks to engage. The mounting bracket is provided with a first limiting component, a second limiting component, and a third limiting component. The first limiting component is used to limit and fix the protruding block and the connecting plate on the first drive cylinder. The second limiting component is used to limit and fix the protruding block and the connecting plate on the second drive cylinder. The third limiting component is used to limit and fix the protruding block and the connecting plate on the third drive cylinder.

[0032] Optionally, the first limiting component includes a concave plate and a first I-beam guide rail. The concave plate is fixedly connected to the connecting column, the first driving cylinder is fixedly connected to the end of the concave plate, and the first mating plate is provided with a first I-beam groove for the first I-beam guide rail to slide.

[0033] The second docking plate is elongated, with a raised groove at one end and the other end extending directly below the second push groove and fixedly connected to the second push plate via a connecting block. The second limiting assembly includes a mounting side plate, a connecting side plate, and two second I-beam guide rails. The mounting side plate is fixedly mounted on the bottom surface of the middle plate, and the second drive cylinder is fixedly connected to the mounting side plate. One end of the second I-beam guide rail is fixedly connected to the mounting side plate, and the other end is connected to the connecting side plate. The two second I-beam guide rails are located on both sides of the connecting block and are fixedly connected to the bottom surface of the middle plate by bolts. A second I-beam groove for sliding the second I-beam guide rail is provided on the top surface of the second docking plate.

[0034] The third limiting component includes a third I-beam guide rail, which is fixedly connected to the bottom surface of the intermediate plate by bolts. The third mating plate is provided with a third I-beam groove for the sliding of the third I-beam guide rail.

[0035] By adopting the above technical solution, the arrangement of the first drive cylinder, the second drive cylinder, the third drive cylinder and the fourth drive cylinder helps to save installation space. Based on this, the connection between each push plate and each cylinder piston rod is cleverly set, resulting in a stable and compact structure.

[0036] In summary, this application includes at least one of the following beneficial technical effects:

[0037] 1. When pressing a product using mold closing, the product is placed on the lower working mold. Then, the upper and lower working molds are driven to move closer to each other via the lifting assembly to achieve mold closing and pressing. When the product needs to be pressed into other shapes, mold changing is required. During mold changing, the working mold and the replacement mold slide one by one in the U-shaped groove via the sliding assembly until the required replacement mold slides onto the worktable to become the working mold. Compared with manual mold changing, this method is easier and helps to improve mold changing efficiency.

[0038] 2. During mold changing, the first drive cylinder, the second drive cylinder, the third drive cylinder and the fourth drive cylinder are activated respectively to control the piston rods of the first push plate, the second push plate, the third push plate and the fourth drive cylinder to push the replacement mold to move one by one, thereby realizing the switching between the working mold and the replacement mold. The setting of the clearance slot provides storage space for unused push plates and avoids interference with the replacement mold moving in the groove.

[0039] 3. The arrangement of the first, second, third, and fourth drive cylinders helps to save installation space. Based on this, the connection between each push plate and the piston rod of each cylinder is cleverly designed, resulting in a stable and compact structure. Attached Figure Description

[0040] Figure 1 It is a schematic diagram of the overall structure of an automatic die-changing table for 3D forming according to an embodiment of the present application.

[0041] Figure 2 It is a schematic diagram for showing the structure of the right working station according to an embodiment of the present application.

[0042] Figure 3 It is a schematic diagram for showing the square convex block and the square groove according to an embodiment of the present application.

[0043] Figure 4 It is a schematic diagram for showing the square groove after hiding the mold body according to an embodiment of the present application.

[0044] Figure 5 It is a schematic diagram for showing the first push groove, the second push groove and the third push groove after hiding the mold body according to an embodiment of the present application.

[0045] Figure 6 It is a bottom view of the intermediate plate according to an embodiment of the present application.

[0046] Figure 7 It is a schematic diagram for showing the concave character plate according to an embodiment of the present application.

[0047] Figure 8 It is a schematic diagram for showing the top lifting cylinder according to an embodiment of the present application.

[0048] Figure 9 It is a schematic diagram for showing the positional relationship between the working upper mold and the upper mold slot according to an embodiment of the present application.

[0049] Figure 10 It is a schematic diagram for showing the reinforcing partition plate according to an embodiment of the present application.

[0050] Explanation of reference numerals in the attached drawings: 1. Mounting bracket; 11. Top plate; 12. Middle plate; 121. Lifting channel; 122. Square protrusion; 123. Strip enclosure; 1231. Clearance channel; 124. U-shaped groove; 1241. First push groove; 1242. Second push groove; 1243. Third push groove; 125. Filling gap; 13. Base plate; 14. Connecting column; 2. Mold body; 21. Worktable; 22. Working mold; 221. 222. Upper working mold; 23. Lower working mold; 24. Replacement mold; 25. Replacement upper mold; 26. Replacement lower mold; 3. Drive mechanism; 4. Lifting assembly; 47. Top lifting cylinder; 48. Bottom lifting cylinder; 49. Top connecting cylinder; 40. Top connecting plate; 41. Bottom connecting cylinder; 42. Bottom connecting plate; 43. Connecting plate; 44. Guide rod; 45. Guide tube; 46. Handle; 5. Sliding assembly; 57. 511. First drive cylinder; 52. First push plate; 53. Second drive cylinder; 54. Second push plate; 55. Third drive cylinder; 56. Third push plate; 57. Fourth drive cylinder; 58. Fourth push plate; 59. First mating plate; 50. Second mating plate; 50. Third mating plate; 61. Protruding block; 62. Protruding groove; 7. Upper mold fixing assembly; 83. Upper mold L-plate; 9. Upper mold slot; 10. 71. Lower mold fixing assembly; 72. Lower mold L-plate; 73. Lower mold slot; 8. First limiting assembly; 81. Second limiting assembly; 811. Mounting side plate; 812. Connecting side plate; 813. Second I-beam guide rail; 82. Third limiting assembly; 821. Third I-beam guide rail; 83. Recessed plate; 84. First I-beam guide rail; 9. Mounting assembly; 91. Hollow increasing block; 911. Reinforcing partition; 92. Mounting square plate. Detailed Implementation

[0051] The following is in conjunction with the appendix Figure 1-10 This application will be described in further detail.

[0052] This application discloses an automatic mold changing table for 3D molding. (Refer to...) Figure 1 The 3D molding automatic mold changing station includes a three-layer mounting frame 1. The mounting frame 1 includes a top plate 11, a middle plate 12, a bottom plate 13, and connecting columns 14. The top plate 11, the middle plate 12, and the bottom plate 13 are fixedly connected in sequence by the connecting columns 14. There are two bottom plates 13. The mounting frame 1 is provided with a left station and a right station. Mold changing devices are provided on both the left and right stations, and the mold changing devices on the left and right stations are arranged symmetrically.

[0053] Reference Figure 2 and Figure 3The mold changing device includes a mold body 2, a worktable 21, and a drive mechanism 3. Multiple mold bodies 2 are provided. Among the multiple mold bodies 2, one is a working mold 22, and the rest are replacement molds 23. The working mold 22 includes a working upper mold 221 and a working lower mold 222. The working upper mold 221 and the working lower mold 222 are lifted and lowered on the mounting frame 1. The lifting directions of the working upper mold 221 and the working lower mold 222 are opposite. The replacement mold 23 includes a replacement upper mold 231 and a replacement lower mold 232.

[0054] Reference Figure 3-5 A lifting slot 121 is provided in the middle of one side of the top surface of the intermediate plate 12. The worktable 21 is located in the lifting slot 121 and is lifted. The lower working mold 222 is fixedly set on the worktable 21 to realize the lifting of the lower working mold 222. A square protrusion 122 is fixedly installed in the middle of the top surface of the intermediate plate 12. Strip-shaped barriers 123 are fixedly installed around the top surface of the intermediate plate 12. The strip-shaped barriers 123 and the square protrusion 122 form a U-shaped groove 124. The lifting slot 121 is located in the U-shaped groove 124. The mold body 2 fills the U-shaped groove 124 along the path of the U-shaped groove 124. Filling gaps 125 are reserved in the U-shaped groove 124. That is, the number of mold bodies 2 that can be filled in the U-shaped groove 124 is n. Therefore, the actual number of mold bodies 2 in the U-shaped groove 124 is n-2.

[0055] Reference Figure 2-5 The worktable 21 can be raised and lowered until its top surface is flush with the bottom wall of the groove 124. The mold body 2 within the groove 124 can move sequentially along the groove's mean-shaped path. Therefore, the position of filling the gap 125 can change as the mold body 2 moves. The mold body 2 that moves onto the worktable 21 is the working mold 22, and the remaining mold bodies 2 are the replacement molds 23. The working mold 22 and the replacement molds 23 can be interchanged. The drive mechanism 3 includes a lifting assembly 4 and a sliding assembly 5. The lifting assembly 4 is used to drive the upper working mold 221 and the lower working mold 222 to rise and fall, and the sliding assembly 5 is used to drive the mold body 2 within the groove 124 to move along the groove's mean-shaped path.

[0056] When pressing a product using a mold, the product is placed on the lower working mold 222. Then, the upper working mold and the lower working mold are driven to move closer to each other via the lifting component 4 to achieve mold pressing. When the product needs to be pressed into a different shape, a mold change is required. During mold change, the working mold 22 and the replacement mold 23 are slid one by one in the groove 124 via the sliding component 5 until the required replacement mold 23 slides onto the worktable 21 to become the working mold 22. Compared to manual mold change, this method is easier and helps improve mold change efficiency.

[0057] Reference Figure 2-7 The sliding assembly 5 includes a first driving cylinder 51, a second driving cylinder 52, a third driving cylinder 53, and a fourth driving cylinder 54 mounted on the mounting bracket 1. The first driving cylinder 51, second driving cylinder 52, and third driving cylinder 53 are all located below the intermediate plate 12, while the fourth driving cylinder 54 is located on the side of the intermediate plate 12. The piston rods of the first driving cylinder 51, second driving cylinder 52, third driving cylinder 53, and fourth driving cylinder 54 are all parallel to the intermediate plate 12. A first push plate 511 is fixedly connected to the piston rod of the first driving cylinder 51, a second push plate 521 is fixedly connected to the piston rod of the second driving cylinder 52, and a third push plate 531 is fixedly connected to the piston rod of the third driving cylinder 53. A first push groove 1241, a second push groove 1242, and a third push groove are respectively formed at the triangular portion of the bottom wall of the recessed groove 124. 1243, the first push groove 1241, the second push groove 1242, and the third push groove 1243 are respectively used for the first push plate 511, the second push plate 521, and the third push plate 531 to pass through and move. The first push groove 1241 and the second push groove 1242 are located at two corners near the worktable 21. The first push groove 1241 is perpendicular to the second push groove 1242 and the third push groove 1243. The second push groove 1242 is parallel to the third push groove 1243, and the length direction of the second push groove 1242 is towards the worktable 21.

[0058] Three clearance slots 1231 are provided on the top surface of the strip enclosure 123. All three clearance slots 1231 are connected to the U-shaped groove 124, and the three clearance slots 1231 are connected to the first push groove 1241, the second push groove 1242 and the third push groove 1243 respectively. The piston rod of the fourth drive cylinder 54 passes through the side wall of the strip enclosure 123. The mold body 2 is pushed along the U-shaped groove 124 by the first push plate 511, the second push plate 521, the third push plate 531 and the piston rod of the fourth drive cylinder 54, realizing the switching between the working mold 22 and the replacement mold 23. When the first push plate 511, the second push plate 521 and the third push plate 531 are not in use, they are located in the clearance slots 1231.

[0059] During mold changing, the piston rods of the first push plate 51, the second push plate 52, the third push plate 53, and the fourth drive cylinder 54 are activated respectively to control the piston rods of the first push plate 511, the second push plate 521, the third push plate 531, and the fourth drive cylinder 54 to move the replacement mold 23 one by one, thereby realizing the switching between the working mold 22 and the replacement mold 23. The setting of the clearance slot 1231 provides storage space for unused push plates and avoids interference with the replacement mold 23 moving in the groove 124.

[0060] Reference Figure 2-3 , Figure 8-10The mounting frame 1 is equipped with an upper mold fixing assembly 6 and a lower mold fixing assembly 7. The upper mold fixing assembly 6 includes an upper mold fixing plate 61 and an upper mold L-plate 62. The upper mold L-plate 62 is fixedly mounted on both sides of the bottom surface of the upper mold fixing plate 61, and the two sides of the upper mold L-plate 62 are arranged opposite each other and form an upper mold slot 63. The lower mold fixing assembly 7 includes a lower mold fixing plate 71 and a lower mold L-plate 72. The lower mold L-plate 72 is fixedly mounted on both sides of the bottom surface of the lower mold fixing plate 71, and the two sides of the lower mold L-plate 72 are arranged opposite each other and form a lower mold slot 73. The working upper mold 221 is engaged in the upper mold slot 63, and the working lower mold 222 is engaged in the lower mold slot 73. The lifting assembly 4 is used to drive the upper mold fixing plate 61 and the lower mold fixing plate 71 to rise and fall. The worktable 21 is the top surface of the lower mold fixing plate 71.

[0061] During mold changing, the lower mold fixing plate 71 is raised and lowered until its top surface is flush with the bottom wall of the groove 124. The upper mold fixing plate 61 is lowered to a position close to the upper mold fixing plate 61. The first push plate 511, the second push plate 521, and the third push plate 531 push the mold body 2 one by one. Finally, the second push plate 521 pushes the replacement mold 23 toward the worktable 21. The replacement mold 23 pushes out the original working mold 22 from the worktable 21. The replacement upper mold 231 of the replacement mold 23 is locked in the upper mold slot 63 to become the working upper mold 221. The replacement lower mold 232 of the replacement mold 23 is locked in the lower mold slot 73 to become the working lower mold 222. Then the upper mold fixing plate 61 rises, the working upper mold 221 and the working lower mold 222 open, and the product to be pressed is placed on the working lower mold 222. The mold is closed and pressed by raising and lowering the working upper mold 221 and the working lower mold 222. The mold changing, as well as the fixing of the upper working mold 221 and the lower working mold 222, are carried out simultaneously, making the mold changing operation simple and convenient.

[0062] Reference Figure 2-7 The first drive cylinder 51 and the fourth drive cylinder 54 are respectively disposed on both sides of the width direction of the intermediate plate 12, and the piston rods of the first drive cylinder 51 and the fourth drive cylinder 54 are disposed opposite to each other. The second drive cylinder 52 and the third drive cylinder 53 are located directly below the intermediate plate 12 and on the side of the hollow raising block 91 away from the first drive cylinder 51. The second drive cylinder 52 and the third drive cylinder 53 are parallel to each other and perpendicular to the first drive cylinder 51. The piston rods of the second drive cylinder 52 and the third drive cylinder 53 are oriented in opposite directions.

[0063] Reference Figure 2-7The bottoms of the first push plate 511, the second push plate 521, and the third push plate 531 are respectively fixedly connected to the first docking plate 55, the second docking plate 56, and the third docking plate 57. The piston rods of the first drive cylinder 51, the second drive cylinder 52, and the third drive cylinder 53 are all fixedly connected to convex blocks 58. The first docking plate 55, the second docking plate 56, and the third docking plate 57 are provided with convex grooves 59 for the convex blocks 58 to engage. The mounting bracket 1 is equipped with a first limiting component 8, a second limiting component 81, and a third limiting component 82. The first limiting component 8 is used to limit and fix the convex blocks 58 and the connecting plate 47 on the first drive cylinder 51; the second limiting component 81 is used to limit and fix the convex blocks 58 and the connecting plate 47 on the second drive cylinder 52; and the third limiting component 82 is used to limit and fix the convex blocks 58 and the connecting plate 47 on the third drive cylinder 53. The first limiting component 8 includes a concave plate 83 and a first I-beam guide rail 84. The concave plate 83 is fixedly connected to the connecting column 14, and the first driving cylinder 51 is fixedly connected to the end of the concave plate 83. The first docking plate 55 has a first I-beam groove for the first I-beam guide rail 84 to slide.

[0064] Reference Figure 6-7 The second docking plate 56 is elongated, with a raised groove 59 on one end. The other end of the second docking plate 56 extends directly below the second push groove 1242 and is fixedly connected to the second push plate 521 via a connecting block. The second limiting assembly 81 includes a mounting side plate 811, a connecting side plate 812, and two second I-beam guide rails 813. The mounting side plate 811 is fixedly mounted on the bottom surface of the intermediate plate 12, and the second drive cylinder 52 is fixedly connected to the mounting side plate 811. One end of the second I-beam guide rail 813 is fixedly connected to the mounting side plate 811, and the other end of the second I-beam guide rail 813 is connected to the connecting side plate 812. The two second I-beam guide rails 813 are located on both sides of the connecting block and are fixedly connected to the bottom surface of the intermediate plate 12 by bolts. A second I-beam groove for sliding the second I-beam guide rail 813 is provided on the top surface of the second docking plate 56. The third limiting component 82 includes a third I-beam guide rail 821, which is fixedly connected to the bottom surface of the intermediate plate 12 by bolts. The third mating plate 57 has a third I-beam groove for sliding the third I-beam guide rail 821. The arrangement of the first driving cylinder 51, the second driving cylinder 52, the third driving cylinder 53, and the fourth driving cylinder 54 helps to save installation space. Based on this, the connection between each push plate and the piston rod of each cylinder is cleverly designed, resulting in a stable and compact structure.

[0065] Reference Figure 2-3 , Figure 8 and Figure 10The lifting assembly 4 includes a top lifting cylinder 41, a bottom lifting cylinder 42, a top connecting cylinder 43, a top connecting plate 44, a bottom connecting cylinder 45, and a bottom connecting plate 46. The top lifting cylinder 41 is fixedly installed on the top surface of the top plate 11. A connecting plate 47 is provided on the top surface of the upper mold fixing plate 61. The top connecting plate 44 is fixedly connected to the top surface of the upper mold fixing plate 61 through the connecting plate 47. The top connecting cylinder 43 is fixedly connected to the top surface of the top connecting plate 44 and is threadedly connected to the piston rod of the top lifting cylinder 41.

[0066] The bottom lifting cylinder 42 is fixedly installed on the bottom surface of the base plate 13. An installation component 9 is provided on the bottom surface of the lower mold fixing plate 71. The bottom connecting plate 46 is fixedly connected to the bottom surface of the lower mold fixing plate 71 via the installation component 9. The bottom connecting cylinder 45 is fixedly connected to the bottom surface of the bottom connecting plate 46 and threadedly connected to the piston rod of the bottom lifting cylinder 42. Activating the top lifting cylinder 41 and the bottom lifting cylinder 42 allows for the lifting and lowering of the upper mold fixing plate 61 and the lower mold fixing plate 71, thereby enabling the lifting and lowering of the upper working mold 221 and the lower working mold 222. Installation is convenient.

[0067] Reference Figure 10 The mounting component 9 includes a hollow riser block 91 and a mounting plate 92. The top of the hollow riser block 91 is fixedly connected to the bottom surface of the lower mold fixing plate 71 via the mounting plate 92. A connecting plate 47 is also provided at the bottom of the hollow riser block 91, and the bottom of the hollow riser block 91 is connected to the top surface of the bottom connecting plate 46 via the connecting plate 47. A reinforcing partition 911 is fixedly installed inside the hollow riser block 91. The hollow riser block 91 facilitates the connection between the bottom lifting cylinder 42 and the lower mold fixing plate 71. The hollow riser block 91 has a simple structure and strong stability. The additional reinforcing partition 911 further increases the structural strength of the hollow riser block 91.

[0068] Reference Figure 2 and Figure 10 A guide rod 471 is fixedly connected to the connecting plate 47. A conduit 472 passes through and is fixedly connected to the top plate 11 and the bottom plate 13, and the conduit 472 is correspondingly sleeved on the guide rod 471. This helps to improve the stability of the lifting and lowering of the upper working mold 221 and the lower working mold 222. The guide rods 471 are located at the four corners of the connecting plate 47, and two guide rods 471 on the same side are fixedly connected by a connecting handle 473. The location of the guide rods 471 at the four corners of the connecting plate 47 further improves the stability of the lifting and lowering of the upper working mold 221 and the lower working mold 222; the two guide rods 471 on the same side are fixedly connected by a connecting handle 473, which makes it easy to hold the handle 473 to install the guide rods 471, and also improves the stability of the bottom connection of the guide rods 471.

[0069] The implementation principle of the 3D molding automatic mold changing table in this application embodiment is as follows: When pressing a product with a mold, the product is placed on the lower working mold 222, and then the upper working mold and the lower working mold are driven to move towards each other through the lifting component 4 to achieve mold pressing. When the product needs to be pressed into other shapes, mold changing is required. During mold changing, the working mold 22 and the replacement mold 23 are slid one by one in the groove 124 through the sliding component 5 until the required replacement mold 23 slides onto the worktable 21 to become the working mold 22. Compared with manual mold changing, this method is more convenient and helps to improve mold changing efficiency.

[0070] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An automatic mold changing table for 3D molding, characterized in that: The mounting frame (1) includes a three-layer structure. The mounting frame (1) includes a top plate (11), a middle plate (12), a bottom plate (13), and a connecting column (14). The top plate (11), the middle plate (12), and the bottom plate (13) are fixedly connected in sequence by the connecting column (14). The bottom plate (13) is provided in two pieces. The mounting frame (1) is provided with a left station and a right station, and both the left station and the right station are provided with mold changing devices. The mold changing devices on the left station and the right station are arranged symmetrically to each other. The mold changing device includes a mold body (2), a worktable (21), and a drive mechanism (3); multiple mold bodies (2) are provided, one of which is a working mold (22), and the remaining molds are replacement molds (23). The working mold (22) includes an upper working mold (221) and a lower working mold (222). The upper working mold (221) and the lower working mold (222) are lifted and lowered on the mounting frame (1). The lifting directions of the upper working mold (221) and the lower working mold (222) are opposite. The replacement mold (23) includes a replacement upper mold (231) and a replacement lower mold (232). A lifting groove (121) is provided in the middle of one side of the top surface of the intermediate plate (12). The workbench (21) is located in the lifting groove (121) and is lifted. The lower working mold (222) is fixedly set on the workbench (21) to realize the lifting of the lower working mold (222). A square protrusion (122) is fixedly set in the middle of the top surface of the intermediate plate (12). A strip-shaped enclosure (123) is fixedly set around the top surface of the intermediate plate (12). The strip-shaped enclosure (123) and the square protrusion (122) form a U-shaped groove (124). The lifting groove (121) is located in the U-shaped groove (124). The mold body (2) fills the U-shaped groove (124) along the path of the U-shaped groove (124). A filling gap (125) is reserved, that is, the number of mold bodies (2) that can be filled in the groove (124) is n, and the actual number of mold bodies (2) in the groove (124) is n-2; the worktable (21) can be raised and lowered until the top surface of the worktable (21) is flush with the bottom wall of the groove (124), and the mold bodies (2) in the groove (124) can move sequentially along the groove path of the groove (124). Therefore, the position of the filling gap (125) can change with the movement of the mold body (2). The mold body (2) that moves to the worktable (21) is the working mold (22), and the remaining mold bodies (2) are the replacement molds (23). The working mold (22) and the replacement mold (23) can be replaced with each other. The driving mechanism (3) includes a lifting component (4) and a sliding component (5). The lifting component (4) is used to drive the upper working mold (221) and the lower working mold (222) to lift. The sliding component (5) is used to drive the mold body (2) in the groove (124) to move along the groove (124) along the groove path. Furthermore, the sliding assembly (5) includes a first driving cylinder (51), a second driving cylinder (52), a third driving cylinder (53) and a fourth driving cylinder (54) disposed on the mounting bracket (1). The first driving cylinder (51), the second driving cylinder (52) and the third driving cylinder (53) are all located below the intermediate plate (12), and the fourth driving cylinder (54) is disposed on the side of the intermediate plate (12). The piston rods of the first driving cylinder (51), the second driving cylinder (52), the third driving cylinder (53), and the fourth driving cylinder (54) are all parallel to the intermediate plate (12). A first push plate (511) is fixedly connected to the piston rod of the first driving cylinder (51), a second push plate (521) is fixedly connected to the piston rod of the second driving cylinder (52), and a third push plate (531) is fixedly connected to the piston rod of the third driving cylinder (53). A first push groove (1241), a second push groove (1242), and a third push groove (1243) are respectively opened at the triangular part of the bottom wall of the groove (124). 3) The first push groove (1241), the second push groove (1242), and the third push groove (1243) are respectively used for the first push plate (511), the second push plate (521), and the third push plate (531) to pass through and move. The first push groove (1241) and the second push groove (1242) are located at two corners near the worktable (21). The first push groove (1241) is perpendicular to the second push groove (1242) and the third push groove (1243). The second push groove (1242) is parallel to the third push groove (1243), and the length direction of the second push groove (1242) is towards the worktable (21). The top surface of the strip enclosure (123) is provided with three clearance slots (1231). The three clearance slots (1231) are all connected to the groove (124), and the three clearance slots (1231) are connected to the first push groove (1241), the second push groove (1242), and the third push groove (1243) respectively. The piston rod of the fourth drive cylinder (54) passes through the side wall of the strip enclosure (123). The mold body (2) is pushed along the groove (124) by the first push plate (511), the second push plate (521), the third push plate (531), and the piston rod of the fourth drive cylinder (54), thereby realizing the switching between the working mold (22) and the replacement mold (23). When the first push plate (511), the second push plate (521), and the third push plate (531) are not in use, they are located in the clearance slots (1231). Furthermore, the mounting frame (1) is provided with an upper mold fixing assembly (6) and a lower mold fixing assembly (7). The upper mold fixing assembly (6) includes an upper mold fixing plate (61) and an upper mold L plate (62). The upper mold L plate (62) is fixedly disposed on both sides of the bottom surface of the upper mold fixing plate (61). The upper mold L plates (62) on both sides are arranged opposite to each other and form an upper mold slot (63). The lower mold L plate (72) is fixedly disposed on both sides of the bottom surface of the lower mold fixing plate (71). The lower mold L plates (72) on both sides are arranged opposite to each other and form a lower mold slot (73). The upper working mold (221) is fitted in the upper mold slot (63), the lower working mold (222) is fitted in the lower mold slot (73), the lifting assembly (4) is used to drive the upper mold fixing plate (61) and the lower mold fixing plate (71) to rise and fall, and the worktable (21) is the top surface of the lower mold fixing plate (71); During mold changing, the lower mold fixing plate (71) is raised and lowered until its top surface is flush with the bottom wall of the groove (124), and the upper mold fixing plate (61) is lowered to a position close to the upper mold fixing plate (61). The first push plate (511), the second push plate (521), and the third push plate (531) push the mold body (2) one by one. Finally, the second push plate (521) pushes the replacement mold (23) toward the worktable (21). The replacement mold (23) pushes out the original working mold (22) on the worktable (21). The replacement upper mold (231) of the mold (23) is locked in the upper mold slot (63) to become the working upper mold (221), and the replacement lower mold (232) of the replacement mold (23) is locked in the lower mold slot (73) to become the working lower mold (222). Then the upper mold fixing plate (61) rises, the working upper mold (221) and the working lower mold (222) open, and the product to be pressed is placed on the working lower mold (222). The mold is closed and pressed by the lifting and lowering of the working upper mold (221) and the working lower mold (222).

2. The 3D molding automatic mold changing table according to claim 1, characterized in that: The lifting assembly (4) includes a top lifting cylinder, a bottom lifting cylinder (42), a top connecting cylinder (43), a top connecting plate (44), a bottom connecting cylinder (45), and a bottom connecting plate (46). The top lifting cylinder (41) is fixedly installed on the top surface of the top plate (11). A connecting plate (47) is provided on the top surface of the upper mold fixing plate (61). The top connecting plate (44) is fixedly connected to the top surface of the upper mold fixing plate (61) through the connecting plate (47). The top connecting cylinder (43) is fixedly connected to the top surface of the top connecting plate (44) and is threadedly connected to the piston rod of the top lifting cylinder (41). The bottom lifting cylinder (42) is fixedly installed on the bottom surface of the base plate (13). The bottom surface of the lower mold fixing plate (71) is provided with an installation component (9). The bottom connecting plate (46) is fixedly connected to the bottom surface of the lower mold fixing plate (71) through the installation component (9). The bottom connecting cylinder (45) is fixedly connected to the bottom surface of the bottom connecting plate (46) and is threadedly connected to the piston rod of the bottom lifting cylinder (42).

3. The 3D molding automatic mold changing table according to claim 2, characterized in that: The mounting assembly (9) includes a hollow riser block (91) and a mounting plate (92). The top of the hollow riser block (91) is fixedly connected to the bottom surface of the mounting plate (92) and the lower mold fixing plate (71). A connecting plate (47) is also provided at the bottom of the hollow riser block (91). The bottom of the hollow riser block (91) is connected to the top surface of the bottom connecting plate (46) through the connecting plate (47). A reinforcing partition (911) is fixedly provided inside the hollow riser block (91).

4. The 3D molding automatic mold changing table according to claim 3, characterized in that: A guide rod (471) is fixedly connected to the connecting plate (47), and a conduit (472) passes through and is fixedly connected to the top plate (11) and the bottom plate (13), with the conduit (472) correspondingly sleeved on the guide rod (471).

5. The 3D molding automatic mold changing table according to claim 4, characterized in that: The guide rods (471) are located at the four corners of the connecting plate (47), and the two guide rods (471) on the same side are fixedly connected by the connecting handle (473).

6. The 3D molding automatic mold changing table according to claim 3, characterized in that: The first driving cylinder (51) and the fourth driving cylinder (54) are respectively disposed on both sides of the width direction of the intermediate plate (12), and the piston rods of the first driving cylinder (51) and the fourth driving cylinder (54) are disposed opposite to each other. The second driving cylinder (52) and the third driving cylinder (53) are located directly below the intermediate plate (12) and on the side of the hollow lifting block (91) away from the first driving cylinder (51). The second driving cylinder (52) and the third driving cylinder (53) are parallel to each other and are both perpendicular to the first driving cylinder (51). The piston rods of the second driving cylinder (52) and the third driving cylinder (53) are oriented in opposite directions.

7. The 3D molding automatic mold changing table according to claim 6, characterized in that: The bottoms of the first push plate (511), the second push plate (521), and the third push plate (531) are respectively fixedly connected to a first docking plate (55), a second docking plate (56), and a third docking plate (57). A convex block (58) is fixedly connected to the piston rod of the first drive cylinder (51), the second drive cylinder (52), and the third drive cylinder (53). The first docking plate (55), the second docking plate (56), and the third docking plate (57) are provided with convex grooves (59) for the convex blocks (58) to engage. The mounting bracket (1) The first limiting component (8), the second limiting component (81), and the third limiting component (82) are provided on the first driving cylinder (51). The first limiting component (8) is used to limit and fix the protruding block (58) and the connecting plate (47) on the first driving cylinder (51). The second limiting component (81) is used to limit and fix the protruding block (58) and the connecting plate (47) on the second driving cylinder (52). The third limiting component (82) is used to limit and fix the protruding block (58) and the connecting plate (47) on the third driving cylinder (53).

8. The 3D molding automatic mold changing table according to claim 7, characterized in that: The first limiting component (8) includes a concave plate (83) and a first I-shaped guide rail (84). The concave plate (83) is fixedly connected to the connecting column (14). The first driving cylinder (51) is fixedly connected to the end of the concave plate (83). The first docking plate (55) has a first I-shaped groove for the first I-shaped guide rail (84) to slide. The second docking plate (56) is elongated, and a raised groove (59) is formed at one end of the second docking plate (56). The other end of the second docking plate (56) extends directly below the second push groove (1242) and is fixedly connected to the second push plate (521) via a connecting block. The second limiting assembly (81) includes a mounting side plate (811), a connecting side plate (812), and two second I-beam guide rails (813). The mounting side plate (811) is fixedly mounted on the bottom surface of the intermediate plate (12). Two drive cylinders (52) are fixedly connected to the mounting side plate (811). One end of the second I-beam guide rail (813) is fixedly connected to the mounting side plate (811), and the other end of the second I-beam guide rail (813) is connected to the connecting side plate (812). The two second I-beam guide rails (813) are located on both sides of the connecting block, and the second I-beam guide rail (813) is fixedly connected to the bottom surface of the intermediate plate (12) by bolts. The top surface of the second docking plate (56) is provided with a second I-beam groove for the second I-beam guide rail (813) to slide. The third limiting component (82) includes a third I-beam guide rail (821), which is fixedly connected to the bottom surface of the intermediate plate (12) by bolts. The third docking plate (57) has a third I-beam groove for sliding the third I-beam guide rail (821).

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