A kind of injection mold for hand model forming

Abstract

The present invention discloses a hand model molding injection mold, which belongs to the field of hand model production, including a frame, and also includes: a molding mechanism arranged on the top of the frame, the molding mechanism is used to perform injection molding of the hand model; a spraying mechanism arranged on the frame, the spraying mechanism is used to extract a loosening agent and spray the loosening agent onto the molding mechanism; an adjusting mechanism located on the spraying mechanism, the adjusting mechanism drives the spraying mechanism to move and is used to spray the loosening agent to different positions of the molding mechanism; a swinging mechanism arranged on the adjusting mechanism. Through the mutual cooperation between the spraying mechanism and the adjusting mechanism, the present invention can spray the loosening agent on the inner wall of the lower mold before the molding mechanism performs injection molding on the hand model. The loosening agent can reduce the adhesion of the material, make it easier to flow and remove bubbles, make the surface of the produced hand model smoother, reduce the generation of pits, and improve the yield rate.

Description

Technical Field

[0001] The invention relates to the technical field of hand model production, in particular to a hand model molding injection mold. Background Art

[0002] A prototype is one or several functional samples made based on the product appearance drawings or structural drawings without making a mold. They are used to check the rationality of the appearance or structure. Usually, products that have just been developed or designed need to be prototyped. Prototypes are the first step to verify the feasibility of the product. It is the most direct and effective way to find out the defects, deficiencies, and drawbacks of the designed product, so as to make targeted improvements to the defects until no deficiencies can be found in individual prototype samples.

[0003] When a prototype is produced, the molten material is injected into a mold for molding. However, when the current prototype molding mold is in use, defects such as bubbles and pits are easily generated at the four corners of the mold, resulting in poor quality of the produced prototype, affecting the later yield rate.

[0004] To this end, we proposed a prototype model molding injection mold. Summary of the invention

[0005] The purpose of the present invention is to solve the problem in the prior art that defects such as bubbles and pits are easily generated at the four corners of the mold, resulting in poor quality of the produced prototype model and affecting the subsequent yield rate, and to propose a prototype model molding injection mold.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A prototype model forming injection mold, comprising a frame and also comprising:

[0008] A molding mechanism is arranged on the top of the frame, and is used for injection molding the prototype model;

[0009] A spraying mechanism is arranged on the frame, and is used to extract the loosening agent and spray the loosening agent onto the forming mechanism;

[0010] An adjusting mechanism located on the spraying mechanism, wherein the adjusting mechanism drives the spraying mechanism to move so as to spray the loosening agent to different positions of the forming mechanism;

[0011] The swing mechanism is arranged on the adjusting mechanism, and the adjusting mechanism is provided with a blowing mechanism for blowing away the loosening agent.

[0012] Preferably, the forming mechanism includes a mounting frame symmetrically fixed on the top of the frame, the sides of the mounting frame are rotatably connected to circular gear rings through bearings, a lower mold is fixed between the two circular gear rings, the outer surface of the circular gear ring on the right is meshingly connected to circular gear 1, a motor 1 is fixed on the mounting frame on the right, and the output shaft end of the motor 1 is fixed to circular gear 1.

[0013] Preferably, the spray mechanism comprises a U-shaped frame movably arranged on the top of a frame, an adjusting cylinder for driving the U-shaped frame to move is installed on the top of the frame, an agent feeding shell is arranged in the middle of the U-shaped frame, and a nozzle is connected to the top of the agent feeding shell.

[0014] Preferably, the spray mechanism also includes a drug storage box fixed on the top of the frame, and a drug extraction pump is provided on the top of the drug storage box. The drug feed end of the drug extraction pump is connected to the drug storage box through a connecting pipe, and the drug discharge end of the drug extraction pump is connected to the drug feed shell through a drug feed hose.

[0015] Preferably, the adjustment mechanism includes a screw rod rotatably connected to a U-shaped frame through a bearing, a second motor is arranged on the side of the U-shaped frame, an output shaft end of the second motor is fixedly connected to the screw rod, a rectangular frame is threadedly connected to the outer surface of the screw rod, and the feed housing is arranged in the middle of the rectangular frame.

[0016] Preferably, the swing mechanism comprises a connecting block fixed to the side of the rectangular frame, a rotating rod is rotatable in the middle of the connecting block through a bearing, a cam is fixed to the top end of the rotating rod, and the cam corresponds to the position of the feed housing.

[0017] Preferably, the swing mechanism further comprises a second circular gear fixed at the bottom end of the rotating rod, a limit rack is fixed in the U-shaped frame, and the second circular gear is meshingly connected with the limit rack.

[0018] Preferably, a return spring is fixed to the right side surface of the feed housing, and the other end of the return spring is fixedly connected to the inner wall of the rectangular frame.

[0019] Preferably, the blowing mechanism includes an air bag fixed between the feed shell and the rectangular frame, an air inlet pipe is fixed to the outer surface of the feed shell, the top end of the air inlet pipe is connected to a spray head, the position of the spray head corresponds to the nozzle, and an air outlet hose is connected between the air bag and the air inlet pipe.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. Through the cooperation between the spray mechanism and the adjustment mechanism, before the molding mechanism performs injection molding on the hand model, the inner wall of the lower mold can be sprayed with a loosening agent. The loosening agent can reduce the adhesion of the material, making it easier to flow and eliminate bubbles, making the surface of the produced hand model smoother, reducing the generation of pits, and improving the yield rate.

[0022] 2. Through the setting of the swing mechanism, when the spray mechanism sprays the loosening agent to the inner wall of the lower mold, it can operate synchronously, so that the feed shell can also swing synchronously during the movement, which not only improves its spraying range, but also can spray the four corners of the lower mold to prevent bubbles and pits from forming at the corners, further improving the removal effect and improving product quality.

[0023] 3. By setting up the blowing mechanism, the sprayed loosening agent can be blown away while the swinging mechanism is moving, so that it can be evenly dispersed on the mold surface to avoid excessive aggregation in some areas and cause uneven effects. The evenly dispersed loosening agent can better reduce the surface tension, reduce the adhesion of the material on the mold surface, and provide better fluidity, thereby once again improving the removal effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a three-dimensional schematic diagram of the overall structure of a prototype model forming injection mold proposed by the present invention;

[0025] Figure 2 A prototype model molding injection mold proposed by the present invention Figure 1 A schematic diagram of the structure enlargement in the middle;

[0026] Figure 3 A schematic diagram of the structure of an adjustment mechanism of a prototype model forming injection mold proposed by the present invention;

[0027] Figure 4 A schematic side view of a frame structure of a prototype model forming injection mold proposed by the present invention;

[0028] Figure 5 A prototype model molding injection mold proposed by the present invention Figure 4 A magnified schematic diagram of the structure at B in the middle;

[0029] Figure 6 This is a schematic front view of the structure of a prototype model forming injection mold proposed by the present invention;

[0030] Figure 7 A rear view schematic diagram of a frame structure of a prototype model forming injection mold proposed by the present invention;

[0031] Figure 8 A prototype model molding injection mold proposed by the present invention Figure 7 Enlarged schematic diagram of the structure at point C in the middle.

[0032] In the figure: 1. frame; 2. forming mechanism; 21. mounting frame; 22. circular gear ring; 23. lower mold; 24. circular gear one; 25. motor one; 3. spray mechanism; 31. U-shaped frame; 32. adjusting cylinder; 33. feed housing; 34. nozzle; 35. storage box; 36. extraction pump; 37. feed hose; 4. adjusting mechanism; 41. screw rod; 42. motor two; 43. rectangular frame; 5. swing mechanism; 51. connecting block; 52. rotating rod; 53. cam; 54. circular gear two; 55. limit rack; 56. reset spring; 6. blowing mechanism; 61. air bag; 62. air inlet pipe; 63. nozzle; 64. air outlet hose. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0034] Example, see Figure 1-Figure 8 , a prototype model forming injection mold, including a frame 1, and also including:

[0035] A molding mechanism 2 is arranged on the top of the frame 1, and the molding mechanism 2 is used for injection molding the prototype model;

[0036] A spraying mechanism 3 is arranged on the frame 1, and the spraying mechanism 3 is used to extract the loosening agent and spray the loosening agent onto the forming mechanism 2;

[0037] An adjusting mechanism 4 is located on the spraying mechanism 3, and the adjusting mechanism 4 drives the spraying mechanism 3 to move so as to spray the loosening agent to different positions of the forming mechanism 2;

[0038] A swing mechanism 5 is arranged on the adjusting mechanism 4, and a blowing mechanism 6 for blowing away the loosening agent is arranged on the adjusting mechanism 4.

[0039] Furthermore, the molding mechanism 2 includes a mounting frame 21 symmetrically fixed on the top of the frame 1, and the sides of the mounting frame 21 are rotatably connected to circular gear rings 22 through bearings, a lower mold 23 is fixed between the two circular gear rings 22, and the outer surface of the right circular gear ring 22 is meshingly connected to a circular gear 1 24, and a motor 1 25 is fixed on the right mounting frame 21, and the output shaft end of the motor 1 25 is fixed to the circular gear 1 24.

[0040] Furthermore, the spray mechanism 3 includes a U-shaped frame 31 movably arranged on the top of the frame 1, an adjusting cylinder 32 for driving the U-shaped frame 31 to move is installed on the top of the frame 1, an agent feeding shell 33 is arranged in the middle of the U-shaped frame 31, and a nozzle 34 is connected to the top of the agent feeding shell 33.

[0041] Furthermore, the spray mechanism 3 also includes a drug storage box 35 fixed on the top of the frame 1, and a drug extraction pump 36 is arranged on the top of the drug storage box 35. The drug inlet end of the drug extraction pump 36 is connected to the drug storage box 35 through a connecting pipe, and the drug outlet end of the drug extraction pump 36 is connected to the drug inlet shell 33 through a drug inlet hose 37.

[0042] Furthermore, the adjustment mechanism 4 includes a screw rod 41 rotatably connected to the U-shaped frame 31 through a bearing, a motor 2 42 is arranged on the side of the U-shaped frame 31, the output shaft end of the motor 2 42 is fixedly connected to the screw rod 41, the outer surface of the screw rod 41 is threadedly connected to a rectangular frame 43, and the agent feeding shell 33 is arranged in the middle of the rectangular frame 43.

[0043] It should be noted that in the prior art, the four corners of the lower mold 23 are prone to produce defects such as bubbles and pits, resulting in poor quality of the produced prototype model, affecting the subsequent yield rate. Improvements are now made, and the specific implementation methods are as follows:

[0044] The circular gear ring 22 is meshed with the circular gear 24. When the motor 25 starts to drive the circular gear 24 to rotate, the circular gear ring 22 can be driven to rotate together. The circular gear ring 22 is connected to the lower mold 23, and the circular gear ring 22 drives the lower mold 23 to flip, so that the lower mold 23 rotates 180 degrees. With this design, after the loosening agent is sprayed on the inner wall of the lower mold 23, the excess loosening agent can drip by itself without the need for subsequent manual processing. When the loosening agent needs to be sprayed, the loosening agent placed in the storage box 35 in advance is sucked out by the setting of the agent pump 36 and sucked into the agent feeding shell through the agent feeding hose 37. 33, which is connected to the agent feeding shell 33 through the nozzle 34, and the loosening agent is sprayed out from the nozzle 34, so as to be sprayed on the inner wall of the lower mold 23. By adjusting the setting of the cylinder 32, the U-shaped frame 31 can be driven to move forward, so that the nozzle 34 moves to the bottom of the lower mold 23, and the longitudinal position of the nozzle 34 can be adjusted. Through the setting of the motor 2 42, the screw rod 41 can be driven to rotate, and the rectangular frame 43 is threadedly connected to the screw rod 41, thereby driving the agent feeding shell 33 and the nozzle 34 to move to the left or right, and the lateral position of the nozzle 34 can be changed, so as to facilitate the spraying of the loosening agent on different positions of the inner wall of the lower mold 23.

[0045] A further benefit of adopting the above method is that before the molding mechanism 2 performs injection molding on the hand plate model, a loosening agent can be sprayed on the inner wall of the lower mold 23. The loosening agent can reduce the adhesion of the material, making it easier to flow and eliminate bubbles, making the surface of the produced hand plate model smoother, reducing the generation of pits, and improving the yield rate.

[0046] Reference Figure 1-Figure 8 , a prototype model forming injection mold, including a frame 1, and also including:

[0047] A molding mechanism 2 is arranged on the top of the frame 1, and the molding mechanism 2 is used for injection molding the prototype model;

[0048] A spraying mechanism 3 is arranged on the frame 1, and the spraying mechanism 3 is used to extract the loosening agent and spray the loosening agent onto the forming mechanism 2;

[0049] An adjusting mechanism 4 is located on the spraying mechanism 3, and the adjusting mechanism 4 drives the spraying mechanism 3 to move so as to spray the loosening agent to different positions of the forming mechanism 2;

[0050] A swing mechanism 5 is arranged on the adjusting mechanism 4, and a blowing mechanism 6 for blowing away the loosening agent is arranged on the adjusting mechanism 4.

[0051] Furthermore, the swing mechanism 5 includes a connecting block 51 fixed to the side of the rectangular frame 43 , a rotating rod 52 is rotated in the middle of the connecting block 51 through a bearing, a cam 53 is fixed to the top of the rotating rod 52 , and the position of the cam 53 corresponds to that of the feed housing 33 .

[0052] Furthermore, the swing mechanism 5 also includes a second circular gear 54 fixed at the bottom end of the rotating rod 52 , a limit rack 55 is fixed in the U-shaped frame 31 , and the second circular gear 54 is meshedly connected with the limit rack 55 .

[0053] Furthermore, a return spring 56 is fixed to the right side surface of the feed housing 33 , and the other end of the return spring 56 is fixedly connected to the inner wall of the rectangular frame 43 .

[0054] It should be noted that: although the loosening agent can be sprayed on the inner wall of the lower mold 23 through the cooperation between the spraying mechanism 3 and the adjusting mechanism 4, the spraying range at the four corners of the lower mold 23 is limited, resulting in certain bubbles and pits at the corners. The following improvements are now made:

[0055] The connecting block 51 is connected to the rectangular frame 43. When the screw rod 41 rotates and drives the rectangular frame 43 and the nozzle 34 to move, the connecting block 51 is driven to move together. The rotating rod 52 is connected to the connecting block 51 in rotation, and the circular gear 2 54 is connected to the bottom end of the rotating rod 52, so the circular gear 2 54 is driven to move together. The limiting rack 55 is meshed with the circular gear 2 54, and the circular gear 2 54 can be limited. Therefore, when the connecting block 51 moves, the rotating rod 52 and the circular gear 2 54 can be driven to rotate. , connected to the cam 53 through the rotating rod 52, which drives the cam 53 to rotate. When the raised end of the cam 53 rotates to the position of the agent feeding housing 33, the setting of the return spring 56 and the air bag 61 can drive the agent feeding housing 33 and the nozzle 34 to swing left and right by utilizing their elasticity, so that the loosening agent sprayed from the nozzle 34 can be sprayed more to the four corners of the lower mold 23. When the raised end of the cam 53 rotates away from the agent feeding housing 33, the nozzle 34 is reset by the elastic force of the return spring 56 and the air bag 61.

[0056] A further advantage of adopting the above method is that when the loosening agent is sprayed on the inner wall of the lower mold 23, the nozzle 34 can be driven to swing back and forth synchronously, which not only improves its spraying range, but also can spray on the four corners of the lower mold 23 to prevent the formation of bubbles and pits at the corners, further improving the removal effect and improving product quality.

[0057] Reference Figure 1-Figure 8 , a prototype model forming injection mold, including a frame 1, and also including:

[0058] A molding mechanism 2 is arranged on the top of the frame 1, and the molding mechanism 2 is used for injection molding the prototype model;

[0059] A spraying mechanism 3 is arranged on the frame 1, and the spraying mechanism 3 is used to extract the loosening agent and spray the loosening agent onto the forming mechanism 2;

[0060] An adjusting mechanism 4 is located on the spraying mechanism 3, and the adjusting mechanism 4 drives the spraying mechanism 3 to move so as to spray the loosening agent to different positions of the forming mechanism 2;

[0061] A swing mechanism 5 is arranged on the adjusting mechanism 4, and a blowing mechanism 6 for blowing away the loosening agent is arranged on the adjusting mechanism 4.

[0062] Furthermore, the blowing mechanism 6 includes an air bag 61 fixed between the feed shell 33 and the rectangular frame 43, an air inlet pipe 62 is fixed to the outer surface of the feed shell 33, the top of the air inlet pipe 62 is connected to a nozzle 63, the position of the nozzle 63 corresponds to that of the nozzle 34, and an air outlet hose 64 is connected between the air bag 61 and the air inlet pipe 62.

[0063] It should be noted that: the airbag 61 is connected to the feed housing 33. When the cam 53 drives the feed housing 33 to swing, the airbag 61 can be stretched. When the feed housing 33 is reset, the airbag 61 can be squeezed again, so that the squeezed gas enters the air outlet hose 64, which is connected to the air inlet pipe 62 through the air outlet hose 64, and the positions of the nozzle 63 and the nozzle 34 correspond. Therefore, the blown gas will enter the air inlet pipe 62 and the nozzle 63 through the air outlet hose 64, and be ejected from the nozzle 63 to disperse the loosening agent.

[0064] A further advantage of adopting the above method is that while the swing mechanism 5 is moving, the sprayed loosening agent can also be blown away so that it can be evenly dispersed on the mold surface, avoiding excessive aggregation in some areas and causing uneven effects. The evenly dispersed loosening agent can better reduce surface tension, reduce the adhesion of materials on the mold surface, and provide better fluidity, thereby once again improving the removal effect.

[0065] When the present invention is used, before the injection molding of the opponent plate model, the motor 25 is started, the motor 25 drives the circular gear 24 to rotate, the circular gear 24 drives the circular gear ring 22 to rotate, the circular gear ring 22 drives the lower mold 23 to rotate, so that the lower mold 23 rotates 180 degrees, so that the inner wall of the lower mold 23 faces the nozzle 34, and at the same time, the regulating cylinder 32 is started to drive the U-shaped frame 31 and the nozzle 34 to move to the bottom of the lower mold 23, and the agent pump 36 is started to pump the agent storage box The loosening agent in 35 is extracted and enters the agent feeding housing 33 from the agent extraction pump 36, and is sprayed out from the nozzle 34, so that the loosening agent is sprayed on the inner wall of the lower mold 23. The motor 2 42 is started to drive the screw rod 41 to rotate. The screw rod 41 drives the rectangular frame 43 and the nozzle 34 to move left and right to spray different parts of the inner wall of the lower mold 23. The rectangular frame 43 drives the connecting block 51 to move. Through the limitation of the circular gear 2 54 and the limiting rack 55, the rotating rod 52 and the cam 53 can be driven to rotate. When the raised end of the cam 53 rotates to the position of the agent feeding housing 33, the elasticity of the return spring 56 and the airbag 61 can drive the agent feeding housing 33 and the nozzle 34 to swing left and right, so that the loosening agent sprayed from the nozzle 34 can be sprayed more to the four corners of the lower mold 23. When the raised end of the cam 53 rotates away from the agent feeding housing 33, the return spring 56 and the elastic force of the airbag 61 will reset the nozzle 34. When the agent feeding housing 33 is reset, the airbag 61 can be reset. Extrusion is performed so that the extruded gas enters the air outlet hose 64, and then enters the air inlet pipe 62 and the nozzle 63 through the air outlet hose 64, and is sprayed out from the nozzle 63 to disperse the loosening agent so that it can be evenly dispersed on the inner wall surface of the lower mold 23. After spraying the loosening agent, the lower mold 23 is reset, the molten liquid is introduced into the lower mold 23, and the upper mold is driven downward by the cylinder installed on the top of the frame 1 to make the upper mold fit with the lower mold 23, so that it is injection molded in the lower mold 23.

[0066] 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 according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A prototype model forming injection mold, comprising a frame (1), characterized in that: Also includes: A molding mechanism (2) is arranged on the top of the frame (1), and the molding mechanism (2) is used to perform injection molding of a prototype model. The molding mechanism (2) comprises a mounting frame (21) symmetrically fixed on the top of the frame (1), and the sides of the mounting frame (21) are rotatably connected to circular gear rings (22) via bearings, a lower mold (23) is fixed between the two circular gear rings (22), and the outer surface of the right circular gear ring (22) is meshingly connected to a circular gear one (24), and a motor one (25) is fixed on the right mounting frame (21), and the output shaft end of the motor one (25) is fixed to the circular gear one (24); A spraying mechanism (3) is arranged on the frame (1), the spraying mechanism (3) is used to extract the loosening agent and spray the loosening agent onto the forming mechanism (2), the spraying mechanism (3) comprises a U-shaped frame (31) movably arranged on the top of the frame (1), an adjusting cylinder (32) for driving the U-shaped frame (31) to move is installed on the top of the frame (1), an agent feeding shell (33) is arranged in the middle of the U-shaped frame (31), and the top of the agent feeding shell (33) is connected to a nozzle (34), the spraying mechanism (3) also comprises a drug storage box (35) fixed on the top of the frame (1), a drug extraction pump (36) is arranged on the top of the drug storage box (35), the drug feeding end of the drug extraction pump (36) is connected to the drug storage box (35) through a connecting pipe, and the drug discharge end of the drug extraction pump (36) is connected to the drug feeding shell (33) through a drug feeding hose (37); an adjusting mechanism (4) located on the spraying mechanism (3), the adjusting mechanism (4) driving the spraying mechanism (3) to move so as to spray a loosening agent to different positions of the forming mechanism (2), the adjusting mechanism (4) comprising a screw rod (41) rotatably connected to the U-shaped frame (31) via a bearing, a second motor (42) being arranged on the side of the U-shaped frame (31), an output shaft end of the second motor (42) being fixedly connected to the screw rod (41), a rectangular frame (43) being threadedly connected to the outer surface of the screw rod (41), and the agent feeding housing (33) being arranged in the middle of the rectangular frame (43); A swing mechanism (5) is arranged on the adjustment mechanism (4), the swing mechanism (5) comprising a connecting block (51) fixed to the side of the rectangular frame (43), a rotating rod (52) is rotatably arranged in the middle of the connecting block (51) via a bearing, a cam (53) is fixed to the top of the rotating rod (52), the cam (53) corresponds to the position of the feed housing (33), the swing mechanism (5) further comprises a second circular gear (54) fixed to the bottom of the rotating rod (52), a limit rack (55) is fixed in the U-shaped frame (31), the second circular gear (54) is meshingly connected with the limit rack (55), and the feed housing (33) is provided with a plurality of gears. A return spring (56) is fixed to the right side, and the other end of the return spring (56) is fixedly connected to the inner wall of the rectangular frame (43). The regulating mechanism (4) is provided with a blowing mechanism (6) for blowing away the loosening agent, and the blowing mechanism (6) comprises an air bag (61) fixed between the feed shell (33) and the rectangular frame (43). An air inlet pipe (62) is fixed to the outer surface of the feed shell (33). The top end of the air inlet pipe (62) is connected to an injection head (63), and the position of the injection head (63) corresponds to that of the nozzle (34). An air outlet hose (64) is connected between the air bag (61) and the air inlet pipe (62).

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