Inclined block reverse pulling demolding mechanism for rattan-imitated plastic chair mold

Abstract

The utility model provides a rattan-imitated plastic chair mold inclined block reverse pulling demolding mechanism, and belongs to the field of injection molds. The mold comprises a movable mold plate and a fixed mold plate, a mold core is arranged on the movable mold plate, an embedded block is further arranged on the movable mold plate, the two sides of the movable mold plate are each connected with a side sliding block in a sliding mode, the two side sliding blocks are located on the two sides of the mold core and the embedded block, a forming cavity is formed among the mold core, the fixed mold plate, the two side sliding blocks and the embedded block, and a demolding mechanism is further arranged on the mold core. Due to the fact that the mold is used for producing a plastic part accessory of a rattan-imitated plastic chair, a plastic part is irregular in shape and provided with a plurality of bent positions, by the adoption of the demolding mode in the mold, on one hand, parts of a straight ejector rod and an inclined ejector rod are omitted, the number of the mold parts is small, the structure is simpler, the plastic part is not prone to being damaged, and the rate of finished products is increased.

Description

TECHNICAL FIELD

[0001] The utility model belongs to injection mold field especially relates to a rattan imitating plastic chair mold inclined block reverse pulling demolding mechanism. BACKGROUND

[0002] The plastic chair is generally formed by one-time injection molding of a plastic mold, has the characteristics of fast processing speed, low cost and recycling, is widely applied to hotels, tourist attractions, meeting rooms and families, and the traditional chairs include wooden chairs, bamboo chairs, rattan chairs and steel-wood hybrid chairs, etc., the above-mentioned chairs have many processing procedures and are relatively troublesome to manufacture, so plastic chairs are widely applied in recent years, the plastic chairs are integrally injection molded or split injection molded, when the split injection plastic chair is molded, the seat plate, the backrest and the chair leg are split injection molded, the seat plate and the backrest and the chair leg are inserted and matched through the insertion column and the connecting ring, but the plastic chair has a large size, the contact area between the plastic chair and the molding surface is large during demolding, and the demolding needs to be carried out for many times due to the existence of the chair back, the stool leg and the chair handle, and the demolding needs to be designed to be more complex when special lines such as rattan lines are designed on the outer surface of the plastic chair, so the traditional demolding mode is easy to cause the plastic part to be difficult to demold, and even the plastic part is bent and damaged during demolding.

[0003] For example, the Chinese patent document discloses a cross-filling type double-color plastic chair integrated molding injection mold [patent application number: CN201711273042.2], which comprises upper and lower complex plates, the upper complex plate is provided with a first runner plate, a first cavity, a second runner plate and a second cavity below, the first runner plate is connected with a first gate, the second runner plate is connected with a second gate, a chair back panel and a seat plate panel are arranged in the first cavity, a chair back first color groove and a chair back second color protrusion are arranged in the chair back panel, a seat plate first color groove and a seat plate second color protrusion are arranged in the seat plate panel, the lower complex plate is provided with first and second cores above, the first and second cores are respectively provided with an upper oil cylinder, a side oil cylinder and a sliding block, the side oil cylinder piston rod is connected with the sliding block, the sliding block is provided with an inclined sliding groove, the second color lifting block is arranged below the inclined sliding rail, the first and second cores are respectively provided with a chair back insert block and a seat plate insert block, the chair back insert block is provided with a second color lifting groove, the lower part of the seat plate insert block is connected with the upper oil cylinder piston rod, the seat plate insert block is provided with an ejection oil cylinder on one side, and the ejection oil cylinder piston rod is matched with the plastic chair. But the demolding mode of the mold is still the traditional ejection mode, which is easy to cause the plastic part to be damaged during demolding. SUMMARY

[0004] The utility model aims at the above problem, provides a rattan imitating plastic chair mold inclined block reverse pulling demolding mechanism.

[0005] In order to achieve the above object, the utility model adopts the following technical scheme:

[0006] The application discloses a kind of rattan plastic chair mould inclined block reverse pulling stripping mechanism, including movable die plate and fixed die plate, the movable die plate is equipped with core, the movable die plate is also equipped with inner block, the movable die plate both sides are slidably connected with one side sliding block, two side sliding blocks are located in the both sides of core and inner block, the core, fixed die plate, two side sliding blocks and inner block form forming cavity between, the core is also equipped with stripping mechanism.

[0007] In the above-mentioned rattan plastic chair mould inclined block reverse pulling stripping mechanism, the stripping mechanism includes a core stripping linear actuator, a sliding cavity is provided in the core, a sliding plate is slidably arranged in the sliding cavity, an output shaft of the core stripping linear actuator extends into the sliding cavity and is fixedly connected with the sliding plate, a plurality of stripping rods are provided on the sliding plate, the stripping rods extend into the core and are slidably connected therewith, and the end portions of the stripping rods are flush with the outer surface of the core near the forming cavity.

[0008] In the above-mentioned rattan plastic chair mould inclined block reverse pulling stripping mechanism, when the mold is closed, a driver placement space is provided between the movable die plate and the fixed die plate, the opening of the driver placement space is in communication with the external space, and the core stripping linear actuator is a pneumatic cylinder and is arranged in the driver placement space.

[0009] In the above-mentioned rattan plastic chair mould inclined block reverse pulling stripping mechanism, at least one guide rod is provided in the sliding cavity, and the guide rod penetrates through the sliding plate and is slidably connected therewith.

[0010] In the above-mentioned rattan plastic chair mould inclined block reverse pulling stripping mechanism, a horizontal movement actuator corresponding to the side sliding block and connected with the side sliding block is provided on the movable die plate.

[0011] In the above-mentioned rattan plastic chair mould inclined block reverse pulling stripping mechanism, the horizontal movement actuator is arranged on an outer extension block, the outer extension block is fixedly arranged on the movable die plate and extends outwardly from the movable die plate.

[0012] In the above-mentioned rattan plastic chair mould inclined block reverse pulling stripping mechanism, two vertical actuators are provided on the movable die plate, the output shafts of the vertical actuators are fixedly connected with the fixed die plate, the output shafts of the two vertical actuators are respectively located at the side edges of the two side sliding blocks, and a groove for placing the output shafts of the vertical actuators is provided on the side sliding block.

[0013] In the above-mentioned rattan plastic chair mould inclined block reverse pulling stripping mechanism, sliding grooves are respectively provided at the two sides of the core, and the side sliding blocks are slidably connected with the core by sliding into the sliding grooves through sliding rods.

[0014] In the inclined block reverse pulling demolding mechanism of the rattan plastic chair mold, the core and the fixed mold plate form an injection channel when the mold is closed, and the injection tube arranged on the fixed mold plate is communicated with the injection channel.

[0015] In the inclined block reverse pulling demolding mechanism of the rattan plastic chair mold, the fixed mold plate is provided with a forming block, the lower surface of the forming block is the inner wall of the forming cavity, and a cooling water pipe is arranged in one of the cooling holes in the fixed mold plate and the movable mold plate and communicated with the forming block.

[0016] Compared with the prior art, the rattan plastic chair mold has the following advantages:

[0017] 1. The mold is used for producing plastic parts of rattan plastic chairs, and the plastic parts are irregular in shape and have multiple bending parts. If a traditional straight top or inclined top demolding method is used, the plastic parts are prone to deformation. However, the demolding method used in the mold can save the parts of the straight top rod and the inclined top rod, so that the mold has fewer parts, the structure is simpler, and the plastic parts are not easily damaged, thereby improving the yield.

[0018] 2. The driver placement space is used to place the core demolding linear driver, and there is a gap between the core demolding linear driver and the inner wall of the driver placement space, so that the core demolding linear driver is not affected when working and has space for the output shaft to move.

[0019] 3. The separation of the movable mold plate and the fixed mold plate is achieved by the working of the vertical driver, and the vertical driver is arranged on the movable mold plate instead of being arranged outside the mold, so that the mold structure is more compact and unnecessary space is saved. The recess is arranged to further provide space for the movement of the side slide block.

[0020] 4. The plastic parts are adhered to the lower surface of the forming block in a large area, so that the cooling liquid can be poured into the forming block through the cooling water pipe to accelerate the cooling speed of the plastic parts.

[0021] 5. The plastic parts are adhered to the lower surface of the forming block in a large area, so that the cooling liquid can be poured into the forming block through the cooling water pipe to accelerate the cooling speed of the plastic parts. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a schematic view of the overall structure;

[0023] Figure 2 is Figure 1 a sectional view;

[0024] Figure 3 is a schematic view of the structure of the movable mold plate;

[0025] Figure 4 is Figure 3a schematic view of one of the explosions;

[0026] Figure 5 is a sectional view of the movable die plate.

[0027] In the figure: movable die plate 10, fixed die plate 11, core 12, embedded block 13, side slide block 14, forming cavity 15, demolding mechanism 16, core demolding linear driver 17, sliding cavity 18, sliding plate 19, demolding rod 20, driver placement space 21, guide rod 22, transverse driving device 23, extension block 24, vertical driving device 25, groove 26, sliding groove 27, sliding rod 28, injection tube 29, injection channel 30, forming block 31, cooling hole 32, cooling water pipe 33. DETAILED DESCRIPTION

[0028] The utility model makes further detailed explanation in combination with the drawings and specific implementation below.

[0029] The utility model discloses a rattan plastic chair mould inclined block pull-out demolding mechanism, combines Figures 1-5 As shown, including movable die plate 10 and fixed die plate 11, movable die plate 10 is equipped with core 12, movable die plate 10 is equipped with embedded block 13 still, movable die plate 10's both sides are slidably connected with a side slide block 14 respectively, and two side slide blocks 14 are located at the both sides of core 12 and embedded block 13, and the core 12, fixed die plate 11, two side slide blocks 14 and embedded block 13 form forming cavity 15, and core 12 is equipped with demolding mechanism 16 still.

[0030] In the embodiment, in the injection process, injection liquid is injected into forming cavity 15 and completes injection, in the demolding process, fixed die plate 11 and movable die plate 10 are away from each other, then side slide block 14 transversely moves and is connected with the plastic part, and finally through demolding mechanism 16, the plastic part is separated from the mould and completes the demolding step. Since the mould is used for producing rattan plastic chair plastic part accessories, the plastic part shape is irregular and has multiple bending parts, if using the demolding mode of the straight top and inclined top of the traditional mould, the plastic part is easy to deform, and using the demolding mode in the mould, on the one hand, the parts of straight top rod and inclined top rod are omitted, so that the mould parts are less and the structure is simpler, and the plastic part is not easy to damage, and the yield is improved.

[0031] Demolding mechanism 16 includes core demolding linear driver 17, core 12 is equipped with sliding cavity 18, sliding cavity 18 is slidably provided with sliding plate 19, the output shaft of core demolding linear driver 17 extends into sliding cavity 18 and is fixedly connected with sliding plate 19, a plurality of demolding rods 20 are arranged on sliding plate 19, demolding rod 20 extends into core 12 and is slidably connected with core 12, and the end of demolding rod 20 is flush with the outer surface of core 12 close to forming cavity 15.

[0032] In the embodiment, during the demolding process, after the fixed mold plate 11 is separated from the movable mold plate 10 and the side slide block 14 is separated from the plastic part, the plastic part is adsorbed on the side of the core 12, that is, the plastic part is located on the side of the demolding mechanism 16 in the core 12, at this time, only the core demolding linear drive 17 needs to work to make the demolding rod 20 move forward to separate the plastic part from the core 12 to complete the demolding step, the demolding process is simple, and only the adhesion of one side needs to be overcome to ensure that the plastic part is not damaged.

[0033] During the clamping, the movable mold plate 10 and the fixed mold plate 11 are provided with a drive placement space 21, the opening of the drive placement space 21 is communicated with the external space, and the core demolding linear drive 17 is a cylinder and is arranged in the drive placement space 21.

[0034] In the embodiment, the drive placement space 21 is used to leave space for the core demolding linear drive 17, and gaps are formed between the core demolding linear drive 17 and the inner walls of the drive placement space 21, so that the core demolding linear drive 17 is not affected during work and has space for the output shaft to move.

[0035] At least one guide rod 22 is arranged in the sliding cavity 18, and the guide rod 22 penetrates through the sliding plate 19 and is in sliding connection with the sliding plate 19.

[0036] In the embodiment, the guide rod 22 is used to stabilize the movement track of the sliding plate 19, prevent the sliding plate 19 from being abraded and causing large friction force due to friction with the inner wall of the sliding cavity 18.

[0037] The movable mold plate 10 is provided with a horizontal movement drive 23 corresponding to and connected with the side slide block 14.

[0038] In the embodiment, during the demolding process, the side slide block 14 is moved through the work of the horizontal movement drive 23.

[0039] The horizontal movement drive 23 is arranged on an outer extension block 24, the outer extension block 24 is fixedly arranged on the movable mold plate 10 and extends outward from the movable mold plate 10.

[0040] In the embodiment, enough space is left between the horizontal movement drive 23 and the movable mold plate 10 for the side slide block 14 to move on the movable mold plate 10 and smoothly demold.

[0041] The movable mold plate 10 is provided with two vertical drives 25, the output shafts of the vertical drives 25 are fixedly connected with the fixed mold plate 11, the output shafts of the two vertical drives 25 are located at the side edges of the two side slide blocks 14, and the side slide block 14 is provided with a groove 26 for placing the output shaft of the vertical drive 25.

[0042] In the embodiment, the separation of the movable mold plate 10 and the fixed mold plate 11 is realized by the operation of the vertical drive 25, the vertical drive 25 is arranged on the movable mold plate 10 instead of being arranged outside the mold, so that the mold structure is more compact, unnecessary space is saved, and the groove 26 is arranged to further provide space for the movement of the side sliding block 14.

[0043] The core 12 is slidably connected with the core 12 through the sliding extension of the side sliding block 14 into the sliding groove 27 through the sliding rod 28.

[0044] In the embodiment, the cooperation of the sliding groove 27 and the sliding rod 28 makes the movement of the side sliding block 14 more stable, and ensures that the plastic part is not bent and damaged.

[0045] When the mold is closed, the core 12 and the fixed mold plate 11 form an injection channel 30, and the injection pipe 29 arranged on the fixed mold plate 11 is in communication with the injection channel 30.

[0046] In the embodiment, the injection liquid flows into the injection channel 30 through the injection pipe 29, and flows into the molding cavity 15 through the injection channel 30 for injection.

[0047] The fixed mold plate 11 is provided with a forming block 31, the lower surface of the forming block 31 is the inner wall of the molding cavity 15, and the fixed mold plate 11 and the movable mold plate 10 are provided with a plurality of cooling holes 32, and the cooling water pipe 33 arranged in one of the cooling holes 32 is in communication with the forming block 31.

[0048] In the embodiment, the plastic part is adhered to the lower surface of the forming block 31 in a large area, so that the cooling liquid is poured into the forming block 31 through the cooling water pipe 33, thereby accelerating the cooling speed of the plastic part.

[0049] The working principle of the utility model is as follows: the injection liquid flows into the injection channel 30 through the injection pipe 29, and flows into the molding cavity 15 through the injection channel 30 for injection, in the demolding process, the separation of the movable mold plate 10 and the fixed mold plate 11 is realized by the operation of the vertical drive 25, then the side sliding block 14 is moved by the operation of the transverse drive 23, so that the side sliding block 14 is disconnected with the plastic part, finally the slide plate 19 moves with the demolding rod 20 and ejects the plastic part to complete the demolding work by the core demolding linear drive 17.

[0050] The specific embodiments described in the present application are only illustrative of the spirit of the utility model. Those skilled in the art to which the utility model belongs can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but will not deviate from the spirit of the utility model or exceed the scope defined by the appended claims.

[0051] Although the die plate 10, the fixed die plate 11, the core 12, the inlay block 13, the side slide 14, the forming cavity 15, the demolding mechanism 16, the core demolding linear driver 17, the sliding cavity 18, the slide 19, the demolding rod 20, the driver placement space 21, the guide rod 22, the transverse movement driver 23, the epitaxial block 24, the vertical driver 25, the recess 26, the sliding groove 27, the sliding rod 28, the injection tube 29, the injection channel 30, the forming block 31, the cooling hole 32, the cooling water pipe 33 and the like are used more in the text, using these terms is only for more conveniently describing and explaining the essence of the utility model; explaining them as any kind of additional limitation is contrary to the spirit of the utility model.

Claims

1. A inclined block demoulding mechanism for rattan plastic chair mould, comprising a movable die plate (10) and a fixed die plate (11), characterized in that, The movable mold plate (10) is provided with a core (12), and is further provided with an embedded block (13).

2. The inclined block demoulding mechanism for rattan-like plastic chair moulds according to claim 1, characterised in that, The demolding mechanism (16) comprises a core demolding linear driver (17), the core (12) is internally provided with a sliding cavity (18), the sliding cavity (18) is internally provided with a sliding plate (19) in a sliding mode, the output shaft of the core demolding linear driver (17) extends into the sliding cavity (18) and is fixedly connected with the sliding plate (19), the sliding plate (19) is provided with a plurality of demolding rods (20), the demolding rods (20) extend into the core (12) and are in a sliding connection mode, and the end portions of the demolding rods (20) are flush with the outer surface of the core (12) close to the forming cavity (15).

3. The inclined block demoulding mechanism for rattan-like plastic chair moulds according to claim 2, characterised in that, When the mold is closed, the movable mold plate (10) and the fixed mold plate (11) are provided with a driver placement space (21), the opening of the driver placement space (21) is in communication with the external space, and the core demolding linear driver (17) is a gas cylinder and is arranged in the driver placement space (21).

4. The inclined block demoulding mechanism for rattan-like plastic chair moulds according to claim 2, characterised in that, At least one guide rod (22) is arranged in the sliding cavity (18), and the guide rod (22) penetrates through the sliding plate (19) and is in a sliding connection mode.

5. The inclined block demoulding mechanism for rattan-like plastic chair moulds according to claim 1, characterised in that, The movable mold plate (10) is provided with a transverse movement driver (23) corresponding to the side sliding block (14) and connected with the side sliding block (14).

6. The inclined block demoulding mechanism for rattan-like plastic chair moulds according to claim 5, characterised in that, The transverse movement driver (23) is arranged on an outer extension block (24), and the outer extension block (24) is fixedly arranged on the movable mold plate (10) and extends outward from the movable mold plate (10).

7. The inclined block demoulding mechanism for rattan-like plastic chair moulds according to claim 5, characterised in that, The movable mold plate (10) is provided with two vertical drivers (25), the output shafts of the vertical drivers (25) are fixedly connected with the fixed mold plate (11), the output shafts of the two vertical drivers (25) are located at the sides of the two side sliding blocks (14), and the side sliding block (14) is provided with a groove (26) for placing the output shaft of the vertical driver (25).

8. The inclined block demoulding mechanism for rattan-like plastic chair moulds according to claim 1, characterised in that, The core (12) is provided with a sliding groove (27) at each side, and the side sliding block (14) is in a sliding connection mode with the core (12) through the sliding rod (28) which extends into the sliding groove (27) in a sliding mode.

9. The inclined block demoulding mechanism for rattan-like plastic chair moulds according to claim 1, characterised in that, When the mold is closed, the core (12) and the fixed mold plate (11) form an injection channel (30), and an injection pipe (29) arranged on the fixed mold plate (11) is in communication with the injection channel (30).

10. The inclined block demoulding mechanism for rattan-like plastic chair moulds according to claim 1, characterised in that, The fixed mold plate (11) is provided with a forming block (31), the lower surface of the forming block (31) is an inner wall of the forming cavity (15), and the fixed mold plate (11) and the movable mold plate (10) are internally provided with a plurality of cooling holes (32), and a cooling water pipe (33) arranged in one of the cooling holes (32) is in communication with the forming block (31).

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