De-molding device for injection molding machine of blower handle

Abstract

The invention relates to the technical field of injection molding equipment demolding, and particularly discloses a blower handle injection molding machine demolding device which comprises a bottom plate, sliding rods are symmetrically and fixedly connected to the upper surfaces of the two sides of the bottom plate, every two sliding rods are arranged as a group, and sliding plates are slidably connected to the sliding rods. By arranging the transfer cavity, the mold can be rapidly filled during injection molding, the injection molding cycle time is shortened, and therefore the production efficiency is improved, meanwhile, the transfer cavity can better control the temperature of raw materials, it is ensured that the raw materials are subjected to injection molding in the optimal state, and the product quality is improved; according to the utility model, raw materials can be ensured to be uniformly mixed before entering the mold, bubbles and non-uniformity in the raw materials can be reduced, so that the product quality is improved, meanwhile, stable pressure can be provided by spiral conveying, which is very important for ensuring that the raw materials are uniformly filled in the mold, and product defects can be reduced.

Description

Technical Field

[0001] The invention relates to the technical field of demoulding of injection molding equipment, in particular to a demoulding device of an injection molding machine for a hair dryer handle. Background Art

[0002] Injection molding is a widely used processing method for manufacturing various plastic products, and it also plays an important role in the production of hair dryer handles. It injects molten plastic raw materials into the mold cavity, and after cooling and solidification, a product with a specific shape and size is obtained. However, in the injection molding process, especially for products such as hair dryer handles, there are some technical challenges.

[0003] In the prior art, it is difficult to effectively guarantee the filling speed of the injection mold and the uniformity of the raw materials, which often leads to a long injection cycle and low production efficiency. At the same time, poor raw material temperature control can easily cause product quality problems, such as bubbles, unevenness and other defects. In addition, during the demolding stage, it is difficult to separate the inner surface of the hair dryer handle from the mold, which can easily cause scratches on the inner surface of the product, affecting the product's appearance and quality. In addition, the degree of automation of the demolding process is not high, requiring more manpower input. These problems restrict the efficiency and product quality of the injection molding production of hair dryer handles and need to be solved urgently. Summary of the invention

[0004] The present invention provides a demoulding device for an injection molding machine of a hair dryer handle, which solves the problems mentioned in the above background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A demoulding device for a hair dryer handle injection molding machine, comprising a bottom plate, two upper surfaces of the bottom plate are symmetrically fixedly connected with slide bars, wherein the slide bars are arranged in pairs, and a slide plate is slidably connected to the slide bars, and further comprising:

[0006] An upper die set, wherein the upper die set is fixedly mounted on the inner side of the slide plate, wherein the upper die set is driven by a hydraulic system and slides up and down along the slide bar;

[0007] A lower die set, the lower die set is fixedly mounted on the middle upper surface of the bottom plate, the lower die set is arranged directly above the upper die set, wherein the lower die set and the upper die set work in cooperation with each other;

[0008] The upper mold assembly includes an upper mold base, both side surfaces of the upper mold base are fixedly connected to the inner surface of the slide, a transfer cavity is provided inside the upper mold base, a feed hole is provided on the middle upper surface of the upper mold base, wherein the feed hole and the transfer cavity are interconnected, and an injection groove is provided on the middle lower surface of the upper mold base, and the injection groove is arranged in a ring shape.

[0009] Preferably, the lower mold assembly includes a lower mold base, which is fixedly connected to the middle upper surface of the base plate, and a mounting groove is opened through the middle upper surface of the lower mold base. The mounting groove is arranged in a cylindrical shape, and an injection tube is arranged inside the mounting groove. The bottom of the injection tube is fixedly connected to the upper surface of the base plate, and the injection tube and the mounting groove are arranged on the same central axis.

[0010] Preferably, a leakage groove is provided through the bottom of the injection tube, and six leakage grooves are provided at fixed intervals around the central axis of the injection tube. An annular cavity is provided between the injection tube and the inner surface of the lower mold base, which is opposite to the injection groove. A spiral plate is fixedly connected to the outer surface of the injection tube, and the outer surface of the spiral plate is fixedly connected to the inner surface of the lower mold base.

[0011] Preferably, a mounting bracket is provided on the inner side of the injection tube, the bottom of the mounting bracket is fixedly connected to the middle upper surface of the base plate, a limiting ring is fixedly embedded on the middle inner surface of the mounting bracket, and four limiting rings are arranged at fixed intervals along the inner surface of the mounting bracket.

[0012] Preferably, the upper and lower side surfaces of the limiting ring are slidably connected with a first movable plate, three first movable plates are arranged at fixed intervals around the central axis of the limiting ring, a second movable plate is arranged between adjacent first movable plates, the second movable plate and the first movable plate are combined into a ring, wherein the outer surfaces of the first movable plate and the second movable plate are combined into a whole circular plane.

[0013] Preferably, linkage grooves are symmetrically provided on both sides of the second movable plate, both ends of the first movable plate are slidably connected in the linkage grooves, deformation grooves are provided on both sides of the second movable plate, support plates are symmetrically fixedly connected inside the deformation grooves, and the support plates are configured as arc-shaped plates.

[0014] Preferably, the inner surface of the first movable plate is fixedly connected to a mounting block, the interior of the mounting block is fixedly connected with a sleeve, and two ends of the sleeve are slidably inserted with an insertion rod, and the sleeve and the insertion rod are combined into a circular ring, and the middle outer surface of the insertion rod is fixedly connected to a traction rod, and the outer end of the traction rod is slidably inserted into the inner surface of the second movable plate, and the inner side of the mounting bracket is provided with a limiting tube, the bottom of the limiting tube is fixedly connected to the middle upper surface of the bottom plate, the interior of the limiting tube is provided with a fixing column, the bottom of the fixing column is fixedly connected to the upper surface of the bottom plate, the outer surface of the fixing column is slidably sleeved with a moving tube, the outer surface of the moving tube is fixedly connected with a connecting block, and the top of the moving tube is fixedly connected with a cover plate, and the outer surface of the connecting block is fixedly connected with a pull rope, and the outer end of the pull rope is fixedly connected to the inner surface of the mounting block, wherein a spring is fixedly connected between the mounting block and the limiting tube, and the pull rope slidably passes through the limiting tube.

[0015] Preferably, the inner surfaces of the upper and lower adjacent first movable plates are fixedly connected with connecting plates, the outer surface of the connecting plate is slidably connected with an air pressure tube, the inner surface of the connecting plate is fixedly connected with an air pressure bag, the end of the air pressure bag away from the connecting plate is fixedly connected to the outer surface of the limiting tube, the interior of the limiting ring is provided with a polymerization groove, the outer surface of the limiting ring is penetrated with micropores, the micropores are connected with the polymerization groove, the air pressure tube is penetrated and fixedly connected to the inner surface of the limiting ring, wherein the air pressure tube is connected with the polymerization groove.

[0016] Preferably, a slide groove is provided at the bottom of the movable tube, and the bottom of the movable tube is slidably connected to the upper surface of the bottom plate through the slide groove, and the bottom of the movable tube is fixedly connected to a bottom block, and the two side surfaces of the bottom block are fixedly connected to movable rods through connecting rods, and the upper and lower ends of the movable rod respectively slide through and are slidably connected to the upper surfaces of the slide plate and the bottom plate, wherein the middle part of the movable rod is elastically connected to the two side upper surfaces of the bottom plate through a spring, when the hair dryer handle needs to be injection molded, the upper mold group can be driven by hydraulic equipment to move down along the slide rod close to the lower mold group, and finally the upper mold base and the lower mold base are tightly fitted, and then the raw material is injected into the transfer cavity through the feed hole, and when the raw material enters the transfer cavity, it will enter the cavity between the injection tube and the lower mold base through the injection groove, and enter the inner cavity of the injection tube through the leakage groove at the bottom of the injection tube, and finally complete the injection molding of the hair dryer handle.

[0017] The present invention provides a demoulding device for an injection molding machine of a hair dryer handle, which has the following beneficial effects:

[0018] 1. The demoulding device of the hair dryer handle injection molding machine can help quickly fill the mold during injection molding by setting a transfer cavity, reduce the injection molding cycle time, and thus improve production efficiency. At the same time, the transfer cavity can better control the temperature of the raw materials, ensuring that the raw materials are injected in the best state, thereby improving product quality. By setting a spiral plate, spiral conveying can be achieved, which can ensure that the raw materials are evenly mixed before entering the mold, which helps to reduce bubbles and unevenness in the raw materials, thereby improving product quality. At the same time, spiral conveying can provide stable pressure, which is very important for ensuring that the raw materials are evenly filled in the mold and helps to reduce product defects.

[0019] 2. The demolding device of the injection molding machine for the hair dryer handle bends the two sides of the second movable plate by means of the arranged deformation groove, and makes the bent second movable plate move slightly inward, so that the first movable plate and the second movable plate gradually separate from the contact with the inner surface of the hair dryer handle during demolding. The gradual separation method can realize the maximum protection of the inner surface of the hair dryer handle during demolding, avoid scratches on the inner surface of the hair dryer handle, and reduce the difficulty of demolding at the same time. The arranged sleeve and the plug rod can ensure that the first movable plate is in a synchronous state during contraction and separation, which greatly improves the working stability and coordination of the device. The arranged connecting plate can connect and fix all the first movable plates, further improving the working stability.

[0020] 3. The demoulding device of the injection molding machine for the hair dryer handle drives the connecting plate to move on the air pressure tube when the first movable plate contracts, which eventually squeezes the air pressure bag, so that the internal air pressure is transmitted to the polymerization tank through the air pressure tube, and then transmitted to the outside through the micropores on the polymerization tank, so that the inner surface of the hair dryer handle is gradually separated from the contact with the limit ring. In conjunction with the first movable plate and the second movable plate, the inner surface of the hair dryer handle is automatically demoulded when the upper mold group moves upward, which solves the problem of difficult demoulding of the inner surface of the hair dryer handle, and at the same time greatly improves the degree of automation of the work and greatly reduces human resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a front view of the present invention;

[0022] Figure 2 It is a structural schematic diagram of the upper module of the present invention;

[0023] Figure 3 It is a partial structural schematic diagram of the lower module of the present invention;

[0024] Figure 4 It is a schematic diagram of the installation structure of the limit ring of the present invention;

[0025] Figure 5 It is a schematic diagram of the installation structure of the first movable plate and the second movable plate of the present invention;

[0026] Figure 6 It is a structural schematic diagram of the sleeve of the present invention;

[0027] Figure 7 It is a schematic diagram of the structure of the mobile tube of the present invention;

[0028] Figure 8 It is a structural schematic diagram of the limiting ring of the present invention.

[0029] In the figure: 1, bottom plate; 2, slide bar; 3, slide plate; 4, upper die set; 41, upper die seat; 42, transfer chamber; 43, feed hole; 44, injection slot; 5, lower die set; 51, lower die seat; 52, mounting slot; 53, injection pipe; 54, leakage slot; 55, spiral plate; 56, mounting frame; 57, limit ring; 58, first movable plate; 59, second movable plate; 510, linkage slot; 511, deformation slot; 512 , support plate; 513, mounting block; 514, sleeve; 515, plug rod; 5151, traction rod; 516, limit tube; 517, fixed column; 518, moving tube; 519, connecting block; 5191, cover plate; 520, pull rope; 521, connecting plate; 522, air pressure tube; 523, air pressure bag; 524, aggregation groove; 525, micropore; 526, slide groove; 527, bottom block; 528, movable rod. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] First embodiment: Figures 1 to 8 As shown, the present invention provides a technical solution: a demoulding device for a hair dryer handle injection molding machine, comprising a bottom plate 1, two upper surfaces of the bottom plate 1 are symmetrically fixedly connected with slide bars 2, wherein the slide bars 2 are arranged in pairs, and slide plates 3 are slidably connected to the slide bars 2, and further comprising:

[0032] The upper die set 4 is fixedly mounted on the inner side of the slide plate 3, wherein the upper die set 4 is driven by a hydraulic system, and the upper die set 4 slides up and down along the slide bar 2;

[0033] The lower die set 5 is fixedly mounted on the middle upper surface of the bottom plate 1, and the lower die set 5 is arranged just above the upper die set 4, wherein the lower die set 5 and the upper die set 4 cooperate with each other;

[0034] The upper mold assembly 4 includes an upper mold base 41, and both side surfaces of the upper mold base 41 are fixedly connected to the inner surface of the slide plate 3. A transfer cavity 42 is provided inside the upper mold base 41, and a feed hole 43 is provided on the middle upper surface of the upper mold base 41, wherein the feed hole 43 is communicated with the transfer cavity 42, and an injection groove 44 is provided on the middle lower surface of the upper mold base 41, and the injection groove 44 is arranged in a ring shape.

[0035] Second embodiment: Figures 1 to 8As shown, the lower mold assembly 5 includes a lower mold base 51, which is fixedly connected to the middle upper surface of the base plate 1. A mounting groove 52 is penetrated through the middle upper surface of the lower mold base 51. The mounting groove 52 is arranged in a cylindrical shape. An injection pipe 53 is arranged inside the mounting groove 52. The bottom of the injection pipe 53 is fixedly connected to the upper surface of the base plate 1, wherein the injection pipe 53 and the mounting groove 52 are arranged on the same central axis.

[0036] A leakage groove 54 is provided through the bottom of the injection tube 53, and six leakage grooves 54 are provided at fixed intervals around the central axis of the injection tube 53. An annular cavity is provided between the injection tube 53 and the inner surface of the lower mold base 51, which is opposite to the injection groove 44. A spiral plate 55 is fixedly connected to the outer surface of the injection tube 53, and the outer surface of the spiral plate 55 is fixedly connected to the inner surface of the lower mold base 51.

[0037] A mounting bracket 56 is provided on the inner side of the injection tube 53 , the bottom of the mounting bracket 56 is fixedly connected to the middle upper surface of the base plate 1 , a limiting ring 57 is fixedly embedded on the middle inner surface of the mounting bracket 56 , and four limiting rings 57 are provided at fixed intervals along the inner surface of the mounting bracket 56 .

[0038] The upper and lower side surfaces of the limiting ring 57 are slidably connected with the first movable plates 58, and three first movable plates 58 are arranged at fixed intervals around the central axis of the limiting ring 57. A second movable plate 59 is arranged between adjacent first movable plates 58, and the second movable plate 59 and the first movable plate 58 are combined into a ring, wherein the outer surfaces of the first movable plate 58 and the second movable plate 59 are combined into an entire circular plane.

[0039] Linkage grooves 510 are symmetrically provided on both sides of the second movable plate 59, and both ends of the first movable plate 58 are slidably connected in the linkage grooves 510. Deformation grooves 511 are provided on both sides of the second movable plate 59, and support plates 512 are symmetrically fixedly connected inside the deformation grooves 511, and the support plates 512 are set as arc-shaped plates.

[0040] The inner surface of the first movable plate 58 is fixedly connected with a mounting block 513, and the interior of the mounting block 513 is penetrated and fixedly connected with a sleeve 514, and the two ends of the sleeve 514 are slidably inserted with an insertion rod 515, and the sleeve 514 and the insertion rod 515 are combined into a circular ring. The middle outer surface of the insertion rod 515 is fixedly connected with a traction rod 5151, and the outer end of the traction rod 5151 is slidably inserted into the inner surface of the second movable plate 59. A limiting tube 516 is provided on the inner side of the mounting frame 56, and the bottom of the limiting tube 516 is fixedly connected to the middle upper surface of the bottom plate 1. A fixed column 517 is provided inside, the bottom of the fixed column 517 is fixedly connected to the upper surface of the base plate 1, the outer surface of the fixed column 517 is slidably sleeved with a moving tube 518, the outer surface of the moving tube 518 is fixedly connected to a connecting block 519, the top of the moving tube 518 is fixedly connected to a cover plate 5191, the outer surface of the connecting block 519 is fixedly connected to a pull rope 520, the outer end of the pull rope 520 is fixedly connected to the inner surface of the mounting block 513, wherein a spring is fixedly connected between the mounting block 513 and the limiting tube 516, and the pull rope 520 slides through the limiting tube 516.

[0041] The inner surfaces of the upper and lower adjacent first movable plates 58 are fixedly connected with a connecting plate 521, and the outer surface of the connecting plate 521 is slidably connected with an air pressure tube 522, and the inner surface of the connecting plate 521 is fixedly connected with an air pressure bag 523, and the end of the air pressure bag 523 away from the connecting plate 521 is fixedly connected to the outer surface of the limiting tube 516, and a polymerization groove 524 is opened inside the limiting ring 57, and micropores 525 are opened on the outer surface of the limiting ring 57, and the micropores 525 are connected with the polymerization groove 524, and the air pressure tube 522 is passed through and fixedly connected to the inner surface of the limiting ring 57, wherein the air pressure tube 522 is connected with the polymerization groove 524.

[0042] A slide groove 526 is provided at the bottom of the movable tube 518, and the bottom of the movable tube 518 is slidably connected to the upper surface of the base plate 1 through the slide groove 526. The bottom of the movable tube 518 is fixedly connected to a bottom block 527, and the two side surfaces of the bottom block 527 are fixedly connected to a movable rod 528 through a connecting rod. The upper and lower ends of the movable rod 528 are respectively slidably connected to the upper surfaces of the slide plate 3 and the base plate 1, and the middle part of the movable rod 528 is elastically connected to the upper surfaces of both sides of the base plate 1 through a spring.

[0043] During operation, when the hair dryer handle needs to be injection molded, the upper mold group 4 can be driven by the hydraulic equipment to move down along the slide bar 2 close to the lower mold group 5, and finally the upper mold base 41 and the lower mold base 51 are tightly fitted, and then the raw material is injected into the transfer cavity 42 through the feed hole 43. After the raw material enters the transfer cavity 42, it will pass through the injection groove 44 into the cavity between the injection tube 53 and the lower mold base 51, and enter the inner cavity of the injection tube 53 through the leakage groove 54 at the bottom of the injection tube 53, and finally the injection molding of the hair dryer handle is completed. By setting the transfer cavity 42, it can help to quickly fill the mold during injection molding, reduce the injection molding cycle time, and thus improve production efficiency. At the same time, the transfer cavity 42 can better control the temperature of the raw material to ensure that the raw material is Injection molding is performed under the best conditions, thereby improving product quality, and spiral conveying can be achieved by setting a spiral plate 55, which can ensure that the raw materials are evenly mixed before entering the mold, which helps to reduce bubbles and unevenness in the raw materials, thereby improving product quality. At the same time, spiral conveying can provide stable pressure, which is very important for ensuring that the raw materials are evenly filled in the mold, and helps to reduce product defects. When the injection molding is completed, the hydraulic equipment can be driven to move upward in the opposite direction, that is, to drive the upper mold group 4 to move upward along the slide bar 2 through the slide plate 3. When the slide plate 3 moves to the top of the movable rod 528, it will then drive the movable rod 528 to move upward, and then drive the movable tube 518 to slide upward along the fixed column 517 through the bottom block 527 connected to its bottom. When the movable tube 51 When the first movable plate 58 is moved upward, the connecting block 519 will be synchronously driven to move upward, thereby pulling the pull rope 520. The pull rope 520 is limited by the limit tube 516 and will only pull the mounting block 513 horizontally inward, thereby moving the first movable plate 58 fixedly connected to the mounting block 513 inward. As the first movable plate 58 continues to move, the second movable plate 59 will be driven to move inward through the linkage groove 510. Since there is an acute angle between two adjacent first movable plates 58, the two sides of the second movable plate 59 will be squeezed as the first movable plate 58 continues to move, thereby bending the two sides of the second movable plate 59 through the set deformation groove 511, and causing the bent second movable plate 59 to move slightly inward, thereby causing the first movable plate 58 to move inwardly. The plate 58 and the second movable plate 59 gradually separate from the contact with the inner surface of the hair dryer handle during demoulding. The gradual separation can protect the inner surface of the hair dryer handle to the greatest extent during demoulding, avoid scratches on the inner surface of the hair dryer handle, and reduce the difficulty of demoulding. The sleeve 514 and the plug rod 515 can ensure that the first movable plate 58 is in a synchronous state when shrinking and disengaging, which greatly improves the working stability and coordination of the device. The connecting plate 521 can connect and fix all the first movable plates 58 to further improve the working stability. When the first movable plate 58 shrinks, it will drive the connecting plate 521 to move on the air pressure tube 522, which will eventually squeeze the air pressure bag 523.The internal air pressure is transported to the aggregation groove 524 through the air pressure tube 522, and then transported to the outside through the micropores 525 on the aggregation groove 524, so that the inner surface of the hair dryer handle gradually breaks away from the contact with the limit ring 57. In cooperation with the first movable plate 58 and the second movable plate 59, the inner surface of the hair dryer handle is automatically demoulded when the upper mold assembly 4 moves upward, which solves the problem of difficult demoulding of the inner surface of the hair dryer handle, and at the same time greatly improves the degree of automation of the work and greatly reduces human resources.

[0044] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by... does not exclude the existence of other identical elements in the process, method, article or device including the element".

Claims

1. A demoulding device for an injection molding machine for a hair dryer handle, comprising a bottom plate (1), characterized in that: The upper surfaces of both sides of the bottom plate (1) are symmetrically fixedly connected with sliding rods (2), wherein the sliding rods (2) are arranged in pairs as a group, and the sliding rods (2) are slidably connected with sliding plates (3), and further comprising: An upper die set (4), wherein the upper die set (4) is fixedly mounted on the inner side of the slide plate (3), wherein the upper die set (4) is driven by a hydraulic system, and the upper die set (4) slides up and down along the slide bar (2); A lower mold assembly (5), wherein the lower mold assembly (5) is fixedly mounted on the middle upper surface of the bottom plate (1), and the lower mold assembly (5) is arranged directly above the upper mold assembly (4), wherein the lower mold assembly (5) and the upper mold assembly (4) cooperate with each other for operation; The upper mold assembly (4) comprises an upper mold base (41), the two side surfaces of the upper mold base (41) are fixedly connected to the inner surface of the slide plate (3), a transfer cavity (42) is provided inside the upper mold base (41), a feed hole (43) is provided on the middle upper surface of the upper mold base (41), wherein the feed hole (43) and the transfer cavity (42) are communicated with each other, and an injection groove (44) is provided on the middle lower surface of the upper mold base (41), and the injection groove (44) is arranged in a ring shape.

2. A demoulding device for a hair dryer handle injection molding machine according to claim 1, characterized in that: The lower die assembly (5) comprises a lower die base (51), the lower die base (51) is fixedly connected to the middle upper surface of the base plate (1), a mounting groove (52) is provided through the middle upper surface of the lower die base (51), the mounting groove (52) is arranged in a cylindrical shape, an injection pipe (53) is arranged inside the mounting groove (52), the bottom of the injection pipe (53) is fixedly connected to the upper surface of the base plate (1), wherein the injection pipe (53) and the mounting groove (52) are arranged on the same central axis.

3. A demoulding device for a hair dryer handle injection molding machine according to claim 2, characterized in that: A leakage groove (54) is provided through the bottom of the injection tube (53), and six leakage grooves (54) are provided at fixed intervals around the central axis of the injection tube (53). An annular cavity is provided between the injection tube (53) and the inner surface of the lower mold base (51), which is opposite to the injection groove (44). A spiral plate (55) is fixedly connected to the outer surface of the injection tube (53), and the outer surface of the spiral plate (55) is fixedly connected to the inner surface of the lower mold base (51).

4. A demoulding device for a hair dryer handle injection molding machine according to claim 3, characterized in that: A mounting frame (56) is provided on the inner side of the injection tube (53), the bottom of the mounting frame (56) is fixedly connected to the middle upper surface of the bottom plate (1), a limiting ring (57) is fixedly embedded on the middle inner surface of the mounting frame (56), and four limiting rings (57) are provided at fixed intervals along the inner surface of the mounting frame (56).

5. A demoulding device for a hair dryer handle injection molding machine according to claim 4, characterized in that: The upper and lower side surfaces of the limiting ring (57) are slidably connected with a first movable plate (58), three first movable plates (58) are arranged at fixed intervals around the central axis of the limiting ring (57), and a second movable plate (59) is arranged between adjacent first movable plates (58), and the second movable plate (59) and the first movable plate (58) are combined into a ring, wherein the outer surfaces of the first movable plate (58) and the second movable plate (59) are combined into a whole circular plane.

6. A demoulding device for an injection molding machine for a hair dryer handle according to claim 5, characterized in that: Linkage grooves (510) are symmetrically provided on both sides of the second movable plate (59), and both ends of the first movable plate (58) are slidably connected in the linkage grooves (510). Deformation grooves (511) are provided on both sides of the second movable plate (59), and support plates (512) are symmetrically fixedly connected inside the deformation grooves (511), and the support plates (512) are configured as arc-shaped plates.

7. A demoulding device for a hair dryer handle injection molding machine according to claim 6, characterized in that: The inner surface of the first movable plate (58) is fixedly connected to a mounting block (513), the interior of the mounting block (513) is penetrated and fixedly connected to a sleeve (514), both ends of the sleeve (514) are slidably inserted with an insertion rod (515), the sleeve (514) and the insertion rod (515) are combined into a circular ring, the middle outer surface of the insertion rod (515) is fixedly connected to a traction rod (5151), the outer end of the traction rod (5151) is slidably inserted into the inner surface of the second movable plate (59), the inner side of the mounting frame (56) is provided with a limiting tube (516), the bottom of the limiting tube (516) is fixedly connected to the middle upper surface of the bottom plate (1), and the limiting tube (516) is fixedly connected to the middle upper surface of the bottom plate (1). ) is provided with a fixed column (517) inside, the bottom of the fixed column (517) is fixedly connected to the upper surface of the bottom plate (1), the outer surface of the fixed column (517) is slidably sleeved with a moving tube (518), the outer surface of the moving tube (518) is fixedly connected to a connecting block (519), the top of the moving tube (518) is fixedly connected to a cover plate (5191), the outer surface of the connecting block (519) is fixedly connected to a pull rope (520), the outer end of the pull rope (520) is fixedly connected to the inner surface of the mounting block (513), wherein a spring is fixedly connected between the mounting block (513) and the limiting tube (516), and the pull rope (520) slides through the limiting tube (516).

8. The demoulding device of the injection molding machine for the hair dryer handle according to claim 7, characterized in that: A connecting plate (521) is fixedly connected to the inner surface of the first movable plate (58) adjacent to the upper and lower parts, and a pneumatic tube (522) is slidably connected to the outer surface of the connecting plate (521), and a pneumatic bag (523) is fixedly connected to the inner surface of the connecting plate (521), and one end of the pneumatic bag (523) away from the connecting plate (521) is fixedly connected to the outer surface of the limiting tube (516), and a polymerization groove (524) is opened inside the limiting ring (57), and micropores (525) are opened through the outer surface of the limiting ring (57), and the micropores (525) are connected to the polymerization groove (524), and the pneumatic tube (522) is fixedly connected to the inner surface of the limiting ring (57), wherein the pneumatic tube (522) is connected to the polymerization groove (524).

9. A demoulding device for an injection molding machine for a hair dryer handle according to claim 8, characterized in that: A slide groove (526) is provided at the bottom of the movable tube (518), and the bottom of the movable tube (518) is slidably connected to the upper surface of the bottom plate (1) through the slide groove (526). The bottom of the movable tube (518) is fixedly connected to a bottom block (527), and the two side surfaces of the bottom block (527) are fixedly connected to a movable rod (528) through a connecting rod. The upper and lower ends of the movable rod (528) are respectively slidably connected to the upper surfaces of the slide plate (3) and the bottom plate (1), wherein the middle part of the movable rod (528) is elastically connected to the upper surfaces of both sides of the bottom plate (1) through a spring.

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