Damping type vertical injection molding machine

Abstract

The utility model discloses a damping type vertical injection molding machine, which relates to the technical field of injection molding machines, and specifically comprises a working table, the top of the working table is provided with a mounting plate, and the top of the mounting plate is provided with a lower mold body; and an injection molding mechanism is further arranged above the working table top and comprises a shell, a discharging box is arranged at the bottom of the shell, a discharging opening is formed in the bottom of the discharging box, and an upper mold body is arranged at the bottom of the discharging box. When the first air cylinder drives the shell to ascend and descend, friction between the annular air bag and the guide groove can be reduced through the rolling annular air bag, sliding of the annular air bag is smoother, vibration energy generated when the shell moves up and down can be absorbed by oil in the annular air bag, and therefore the stable effect of the shell moving up and down is guaranteed. And vibration can be further weakened through the damping piece, the stable lifting effect is further improved, and the injection molding effect is better.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding machines, in particular to a shock-absorbing vertical injection molding machine. Background Art

[0002] When working, the vertical injection molding machine extrude thermoplastics or thermosetting materials into the molding mold to produce products of various shapes. Vertical injection molding machines are commonly used in plastic molding processes.

[0003] When injecting some special precision parts, in order to ensure the stability of the entire machine body, shock-absorbing feet will be installed at the bottom of the vertical injection molding machine to ensure the stability of the entire working process. This type of vertical injection molding machine is called a shock-absorbing vertical injection molding machine.

[0004] When the shock-absorbing vertical injection molding machine in the prior art is in use, the upper mold body and the lower mold body need to be constantly fitted and separated, which causes the upper mold body to constantly rise and fall. In order to ensure the stability of the upper mold body's lifting and lowering, guide rods and guide blocks are usually added for guiding and stabilization. However, in the process of using the guide rod for guidance, if the guide rod and the guide block are not closely fitted, the stability of the upper mold body lifting and lowering cannot be effectively guaranteed. If the guide rod and the guide block are closely fitted, under high-intensity working conditions, the guide block and the guide rod are prone to friction and wear, and long-term use will also result in insufficient fit. Therefore, it is urgent to improve it. Utility Model Content

[0005] The purpose of the utility model is to provide a shock-absorbing vertical injection molding machine to solve the problems raised in the above background technology.

[0006] In order to achieve the above utility model purpose, the utility model adopts the following technical solutions:

[0007] The utility model provides a shock-absorbing vertical injection molding machine, comprising a work surface, a mounting plate is arranged on the top of the work surface, and a lower mold body is arranged on the top of the mounting plate; an injection molding mechanism is also arranged above the work surface, the injection molding mechanism comprises a shell, and a material box is arranged at the bottom of the shell, a material discharge port is opened at the bottom of the material box, and an upper mold body is arranged at the bottom of the material box;

[0008] A stable guide assembly for the shell to move up and down is also provided on the top of the work surface, and the stable guide assembly includes fixed blocks fixed to the left and right sides of the shell, and a first cylinder installed on the work surface, and the output end of the first cylinder is fixed to the bottom of the fixed block;

[0009] The stable guide assembly also includes a pillar fixed to the top of the work surface, and guide grooves are provided on all four sides of the pillar. A fixed frame is fixed on the fixed block, and the fixed frame is sleeved on the outside of the pillar. A buffer guide member that cooperates with the guide groove is provided on the inner wall of the fixed frame.

[0010] Preferably, the buffer guide comprises a fixed box fixed on the inner wall of the fixed frame, and a piston is arranged inside the fixed box, a shock absorber is connected between one side of the piston and the inner wall of the fixed box, and a connecting block penetrating to the outside of the fixed box is fixed on the other side of the piston, the end of the connecting block is connected to the connecting frame, and the connecting frame is rotatably connected to an axis through a bearing, and an annular airbag is provided on the outside of the axis.

[0011] Preferably, the annular airbag and the guide groove cooperate with each other, and the interior of the annular airbag is a hollow structure and is filled with oil.

[0012] Preferably, a feed pipe connected to the interior of the shell is provided on the side of the shell, and an extrusion plate is provided inside the shell, a rotating shaft is rotatably connected to the center of the top of the extrusion plate through a bearing, a second cylinder is fixed to the top of the shell, the top end of the rotating shaft passes through the top of the shell and is connected to the output end of the second cylinder, and a recessed groove is provided on the side of the shell.

[0013] Preferably, a stirring rod is arranged on the outside of the rotating shaft along its circumferential direction, and a driving assembly for driving the rotating shaft to rotate along its central axis is arranged on the top of the shell.

[0014] Preferably, the driving assembly includes a motor installed on the top of the shell, and the output end of the motor is connected to a first gear, and the outer sleeve of the rotating shaft is provided with a second gear meshing with the first gear.

[0015] Preferably, a plurality of holes are evenly formed on the bottom of the shell, and all the holes are connected to the interior of the material box.

[0016] Compared with the prior art, one or more of the above technical solutions have the following beneficial effects:

[0017] When the utility model drives the shell to be lifted and lowered by the first cylinder, the rolling annular airbag can reduce the friction between it and the guide groove, thereby making the sliding of the shell smoother. At the same time, the vibration energy generated when the shell moves up and down will be absorbed by the oil inside the annular airbag, so as to ensure the stability of the shell's up and down movement. In addition, the use of shock-absorbing parts can further reduce the vibration, further improve the stable lifting effect, and make the injection molding effect better. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0019] In addition, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a structural schematic diagram of the injection molding mechanism of the utility model;

[0022] Figure 3 It is a structural schematic diagram of the stable guide assembly of the utility model;

[0023] Figure 4 It is a schematic diagram of the internal structure of the fixing box of the utility model;

[0024] Figure 5 It is an exploded view of the annular airbag and the axis of the utility model;

[0025] Figure 6 It is a schematic diagram of the internal structure of the housing of the utility model;

[0026] Figure 7 It is a structural schematic diagram of the drive assembly of the utility model;

[0027] In the figure:

[0028] 1. Work surface; 2. Mounting plate; 3. Lower mold body; 4. Shell; 5. Feed box; 6. Feed port; 7. Upper mold body; 8. Feed pipe;

[0029] 9. Stable guide assembly; 901. Fixed block; 902. First cylinder; 903. Fixed frame; 904. Pillar; 905. Guide groove; 906. Fixed box; 907. Piston; 908. Shock absorber; 909. Connecting block; 910. Connecting frame; 911. Axis; 912. Annular airbag;

[0030] 10. Rotating shaft; 11. Stirring rod; 12. Extrusion plate; 13. Second cylinder; 14. Concave groove; 15. Hole;

[0031] 16. driving assembly; 161. motor; 162. first gear; 163. second gear. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0033] See also Figure 1-Figure 7 A shock-absorbing vertical injection molding machine comprises a work surface 1, a mounting plate 2 is arranged on the top of the work surface 1, and a lower mold body 3 is arranged on the top of the mounting plate 2; an injection molding mechanism is also arranged above the work surface 1, and the injection molding mechanism comprises a shell 4, and a material box 5 is arranged at the bottom of the shell 4, a material discharge port 6 is opened at the bottom of the material box 5, and an upper mold body 7 is arranged at the bottom of the material box 5;

[0034] The top of the work surface 1 is also provided with a stable guide assembly 9 for the shell 4 to move up and down. The stable guide assembly 9 includes a fixed block 901 fixed to the left and right sides of the shell 4, and a first cylinder 902 installed on the work surface 1. The output end of the first cylinder 902 is fixed to the bottom of the fixed block 901.

[0035] The stabilizing guide assembly 9 also includes a support column 904 fixed to the top of the work surface 1, and guide grooves 905 are provided on the four sides of the support column 904. A fixing frame 903 is fixed to the fixing block 901, and the fixing frame 903 is sleeved on the outside of the support column 904. A buffer guide member cooperating with the guide groove 905 is provided on the inner wall of the fixing frame 903.

[0036] Furthermore, the buffer guide member includes a fixed box 906 fixed on the inner wall of the fixed frame 903, and a piston 907 is arranged inside the fixed box 906, a shock absorber 908 is connected between one side of the piston 907 and the inner wall of the fixed box 906, and a connecting block 909 is fixed to the other side of the piston 907 and penetrates to the outside of the fixed box 906, the end of the connecting block 909 is connected to the connecting frame 910, and the connecting frame 910 is rotatably connected to the axis 911 through a bearing, and the outer sleeve of the axis 911 is provided with an annular airbag 912.

[0037] Furthermore, the annular airbag 912 and the guide groove 905 cooperate with each other, and the interior of the annular airbag 912 is a hollow structure and is filled with oil.

[0038] In summary, when in use, after starting the first cylinder 902, the first cylinder 902 drives the fixed block 901, the fixed frame 903, the shell 4, etc. to rise and fall, so that the annular airbag 912 slides in the guide groove 905. Since the axis 911 inside the annular airbag 912 is rotatably connected to the fixed frame 903, when the shell 4 is raised and lowered, the annular airbag 912 itself rotates when sliding inside the guide groove 905. On the one hand, the rolling annular airbag 912 can reduce the friction between it and the guide groove 905, thereby making it slide more smoothly and have a better sliding effect. On the other hand, since the interior of the annular airbag 912 is filled with oil, and the annular airbags 912 are arranged on all four sides of the pillar 904, when the shell 4 moves up and down, the vibration energy generated by it will be absorbed by the oil inside the annular airbag 912. At the same time, further, the vibration can be further weakened by using the shock absorber 908, such as Figure 4 As shown, the shock absorbing member 908 includes a spring and a corresponding damping member, so that the housing 4 can move effectively and stably when it is raised and lowered, thereby enabling the upper mold body 7 and the lower mold body 3 to be accurately docked, resulting in a better injection molding effect.

[0039] Furthermore, a feed pipe 8 connected to the interior of the shell 4 is provided on the side of the shell 4, and an extrusion plate 12 is provided inside the shell 4. A rotating shaft 10 is rotatably connected to the center of the top of the extrusion plate 12 through a bearing. A second cylinder 13 is fixed to the top of the shell 4. The top end of the rotating shaft 10 passes through the top of the shell 4 and is connected to the output end of the second cylinder 13. A recessed groove 14 is provided on the side of the shell 4.

[0040] Furthermore, a stirring rod 11 is disposed on the outside of the rotating shaft 10 along its circumferential direction, and a driving assembly 16 for driving the rotating shaft 10 to rotate along its central axis is disposed on the top of the housing 4 .

[0041] Furthermore, the driving assembly 16 includes a motor 161 mounted on the top of the housing 4, and the output end of the motor 161 is connected to a first gear 162, and the outer portion of the rotating shaft 10 is sleeved with a second gear 163 meshing with the first gear 162;

[0042] Furthermore, a plurality of holes 15 are evenly formed at the bottom of the shell 4 , and the holes 15 are all connected to the interior of the material box 5 .

[0043] When in use, molten plastic is injected into the shell 4 through the feed pipe 8 (it can also be heated and melted inside the shell 4, but in this case, a melting part for melting the plastic needs to be added inside the shell 4), and then the motor 161 is started. The motor 161 drives the first gear 162 to rotate. The rotation of the first gear 162 enables the second gear 163 to drive the rotating shaft 10 and the stirring rod 11 to rotate. The rotation of the stirring rod 11 can stir the molten plastic inside the shell 4 so that the large bubbles inside are stirred away. After stirring to a certain extent, the motor 161 is turned off, and the second cylinder 13 is started. The second cylinder 13 drives the rotating shaft 10 and the second gear 163 to descend (the second gear 163 has enough descending space, and it does not enter the interior of the shell 4, which is only schematically shown in the figure). When the rotating shaft 10 descends, the extrusion plate 12 can be lowered. In the initial non-descending state, the extrusion plate 12 is in Figure 6 In the state, the molten plastic is only above the extrusion plate 12 (the four sides of the extrusion plate 12 are tightly fitted with the inner wall of the shell 4), and as the extrusion plate 12 descends, the extrusion plate 12 moves to the vicinity of the concave groove 14 on the shell 4, so that a gap is generated around the extrusion plate 12 due to the existence of the concave groove 14. At this time, the molten plastic will enter the bottom of the extrusion plate 12 through the gap. After the second cylinder 13 is stopped briefly, the second cylinder 13 is started again after the molten plastic completely enters the bottom of the extrusion plate 12. The second cylinder 13 drives the extrusion plate 12 to descend again. At this time, the extrusion plate 12 can squeeze the molten plastic below it into the upper mold body 7 and the lower mold body 3 through the hole 15 and the discharge port 6 (before this, the first cylinder 902 should be used to drive the shell 4 to descend and make the upper mold body 7 and the lower mold body 3 fit together), thereby completing the injection molding operation;

[0044] The holes 15 are arranged densely and small, so that the molten plastic can be squeezed when passing through the holes 15, and small bubbles in the molten plastic can be further removed, thereby improving the injection molding effect and achieving better use effect.

[0045] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A shock-absorbing vertical injection molding machine, comprising a work surface (1), characterized in that: A mounting plate (2) is arranged on the top of the work surface (1), and a lower mold body (3) is arranged on the top of the mounting plate (2); an injection molding mechanism is also arranged above the work surface (1), the injection molding mechanism comprises a shell (4), and a material discharge box (5) is arranged at the bottom of the shell (4), a material discharge port (6) is opened at the bottom of the material discharge box (5), and an upper mold body (7) is arranged at the bottom of the material discharge box (5); A stabilizing guide assembly (9) for the shell (4) to move up and down is also provided on the top of the work surface (1), and the stabilizing guide assembly (9) comprises a fixing block (901) fixed to the left and right sides of the shell (4), and a first cylinder (902) installed on the work surface (1), and the output end of the first cylinder (902) is fixed to the bottom of the fixing block (901); The stabilizing guide assembly (9) further comprises a support column (904) fixed to the top of the work surface (1), and guide grooves (905) are provided on four sides of the support column (904); a fixing frame (903) is fixed to the fixing block (901), and the fixing frame (903) is sleeved on the outside of the support column (904); and a buffer guide member cooperating with the guide groove (905) is provided on the inner side wall of the fixing frame (903).

2. The shock-absorbing vertical injection molding machine according to claim 1, characterized in that: The buffer guide member comprises a fixed box (906) fixed on the inner wall of the fixed frame (903), and a piston (907) is arranged inside the fixed box (906), a shock absorbing member (908) is connected between one side of the piston (907) and the inner wall of the fixed box (906), and a connecting block (909) penetrating to the outside of the fixed box (906) is fixed on the other side of the piston (907), the end of the connecting block (909) is connected to a connecting frame (910), and an axis (911) is rotatably connected to the connecting frame (910) through a bearing, and an annular air bag (912) is sleeved on the outside of the axis (911).

3. The shock-absorbing vertical injection molding machine according to claim 2, characterized in that: The annular airbag (912) and the guide groove (905) cooperate with each other, and the interior of the annular airbag (912) is a hollow structure and is filled with oil.

4. The shock-absorbing vertical injection molding machine according to claim 1, characterized in that: A feed pipe (8) communicating with the interior of the shell (4) is arranged on the side of the shell (4), and an extrusion plate (12) is arranged inside the shell (4). A rotating shaft (10) is rotatably connected to the center of the top of the extrusion plate (12) via a bearing. A second cylinder (13) is fixed to the top of the shell (4). The top end of the rotating shaft (10) passes through the top of the shell (4) and is connected to the output end of the second cylinder (13). A recessed groove (14) is arranged on the side of the shell (4).

5. The shock-absorbing vertical injection molding machine according to claim 4, characterized in that: A stirring rod (11) is arranged on the outside of the rotating shaft (10) along its circumferential direction, and a driving assembly (16) for driving the rotating shaft (10) to rotate along its central axis is arranged on the top of the housing (4).

6. The shock-absorbing vertical injection molding machine according to claim 5, characterized in that: The driving assembly (16) comprises a motor (161) mounted on the top of the housing (4), and the output end of the motor (161) is connected to a first gear (162), and the outer portion of the rotating shaft (10) is sleeved with a second gear (163) meshing with the first gear (162).

7. The shock-absorbing vertical injection molding machine according to claim 1, characterized in that: A plurality of holes (15) are evenly arranged at the bottom of the shell (4), and the holes (15) are all connected to the interior of the material box (5).

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