CN116852654B - Demoulding structure of injection mould - Google Patents
Demoulding structure of injection mould Download PDFInfo
- Publication number
- CN116852654B CN116852654B CN202311118244.5A CN202311118244A CN116852654B CN 116852654 B CN116852654 B CN 116852654B CN 202311118244 A CN202311118244 A CN 202311118244A CN 116852654 B CN116852654 B CN 116852654B
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- fixed
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- 238000002347 injection Methods 0.000 title claims abstract description 17
- 239000007924 injection Substances 0.000 title claims abstract description 17
- 239000003795 chemical substances by application Substances 0.000 claims description 27
- 238000005507 spraying Methods 0.000 claims description 24
- 238000001816 cooling Methods 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 description 12
- 238000001746 injection moulding Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 239000007921 spray Substances 0.000 description 7
- 239000006082 mold release agent Substances 0.000 description 6
- 238000000926 separation method Methods 0.000 description 5
- 239000000498 cooling water Substances 0.000 description 4
- 239000003292 glue Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/2602—Mould construction elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
- B29C37/0067—Using separating agents during or after moulding; Applying separating agents on preforms or articles, e.g. to prevent sticking to each other
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/1769—Handling of moulded articles or runners, e.g. sorting, stacking, grinding of runners
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/2602—Mould construction elements
- B29C45/2606—Guiding or centering means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/72—Heating or cooling
- B29C45/73—Heating or cooling of the mould
- B29C45/7312—Construction of heating or cooling fluid flow channels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/1769—Handling of moulded articles or runners, e.g. sorting, stacking, grinding of runners
- B29C2045/177—Handling of moulded articles or runners, e.g. sorting, stacking, grinding of runners stacking moulded articles
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Injection mold demoulding structure relates to shedder technical field, including the cover half and along the movable mould that vertical horizontal slip set up, the movable mould internal fixation is equipped with product bottom surface center movable mould benevolence, and the cover is equipped with along the vertically gliding product bottom surface side movable mould benevolence in the product bottom surface center movable mould benevolence on the benevolence, and the both sides of product bottom surface side movable mould benevolence are equipped with two along transversely doing the product lateral wall movable mould benevolence of opposite direction and opposite movement, are equipped with two along the product top surface cover half benevolence of horizontal relative slip setting in the cover half. The invention solves the problem that the product reject ratio is increased because the ejector pin easily pushes the back of the product when ejecting the product when the ejector pin ejects the product because the holding power between the product and the side wall of the movable mould is larger when the product area in the movable mould is larger in the traditional technology.
Description
Technical Field
The invention relates to the technical field of demolding devices, in particular to an injection mold demolding structure.
Background
During injection mold production, plastic is injected into the mold by an injection molding machine, demolding operation is performed manually, however, the temperature of the plastic mold just subjected to injection molding is relatively high, a worker needs to wait for cooling of a product for a period of time and then can perform demolding operation, and the worker manually performs demolding, so that the production efficiency is low, the mass continuous production is seriously affected, the production cost is increased, and a mold demolding device is used for assisting product demolding in the market.
The utility model discloses a patent of publication number CN214926745U among the prior art, this scheme includes the bottom plate, is fixed with fixed lower mould on the bottom plate, and the horizontal direction of fixed lower mould left side bottom plate is upwards slided and is provided with movable lower mould, and movable lower mould and fixed lower mould top are provided with the mould, can realize automatic drawing of patterns, compound die, conveniently take out the product, can reduce workman's intensity of labour, simultaneously can reduce manufacturing cost.
The prior devices, including the above patents, have also gradually exposed disadvantages with use, mainly in the following respects:
firstly, after the injection molding of the existing injection mold is finished, a fixed mold and a movable mold are separated, products in a mold cavity are required to be pushed out through a thimble, when the area of the products in the movable mold is large, the holding power of the products and the side wall of the movable mold is large, and the thimble is easy to push out the back of the products when ejecting the products, so that the reject ratio of the products is increased.
Secondly, after the injection molding is finished by the existing injection mold, the product box is lifted through the control program to collect the product, when the mold has a problem and needs to be shut down for maintenance, the control program needs to be closed, the control program needs to be opened and debugged after the maintenance is finished, the production is carried out after the debugging is finished, the utilization rate of equipment is reduced in the process of switching and debugging the control program, and the problem of program disorder is easy to occur along with the use of the control program, when the program disorder occurs, the collecting box is directly inserted between the movable mold and the fixed mold, and the movable mold and the fixed mold are directly damaged when being closed, so that extra maintenance cost is generated, and the production cost of the product is increased.
Thirdly, when the existing injection mold sprays the release agent, the control program is mainly used for controlling the spraying device to spray the mold core regularly, and the spraying interval time of the control program is required to be corrected regularly because the mold opening time interval is inconsistent each time, so that the collision between the release agent spray pipe and the mold is prevented, the production process of the mold is required to be adjusted during production, and when the production process is changed, the control program is required to be readjusted and written, so that the production rate is reduced, and the daily yield is influenced.
Fourth, the existing injection mold has the problem that the holding power of the fixed mold to the product is large when the mold is opened, so that the product cannot follow the movement of the movable mold, directly falls to the ground, damage to the product is caused, and the reject ratio is increased.
Fifth, when the injection mold is used for producing products with thicker glue positions, the phenomenon that the products are softer due to shorter cooling time exists, so that the products are easy to deform when being ejected out, and if the cooling time is longer, the daily output of workshops is reduced.
In summary, it is clear that the prior art has inconvenience and defects in practical use, so that improvement is needed.
Disclosure of Invention
Aiming at the defects in the prior art, the invention solves the problems that when the product area in the movable die is larger, the holding power between the product and the side wall of the movable die is larger, and the back of the product is easily damaged by the ejector pin when the product is ejected out, so that the reject ratio of the product is increased in the prior art.
In order to solve the problems, the invention provides the following technical scheme:
the demoulding structure of the injection mould comprises a fixed mould and a movable mould which is arranged along the longitudinal horizontal sliding, wherein a central movable mould core of the bottom surface of the product is fixedly arranged in the movable mould, a side edge movable mould core of the bottom surface of the product which slides along the longitudinal direction is sleeved on the central movable mould core of the bottom surface of the product, two side wall movable mould cores of the product which do opposite and opposite movement along the transverse direction are arranged on two sides of the side edge movable mould core of the bottom surface of the product,
two product top surface fixed mould kernels which are arranged in a sliding manner are arranged in the fixed mould.
As an optimized scheme, a product collecting box which is vertically lifted is arranged in a lower area between the fixed die and the movable die, when two movable die cores on the side wall of the product are in opposite movement, the product collecting box is lifted to an area between the fixed die and the movable die, and when two movable die cores on the side wall of the product are in opposite movement, the product collecting box is lifted to a position between the fixed die and the movable die.
As an optimized scheme, when the fixed die and the movable die are opened, a linkage piece is utilized to be provided with a release agent spraying pipe extending to an area between the fixed die and the movable die, and when the fixed die and the movable die are closed, the linkage piece is utilized to withdraw the release agent spraying pipe from the area between the fixed die and the movable die.
As an optimized scheme, the fixed die core on the top surface of the product and the movable die core on the side wall of the product are respectively provided with a cooling water channel.
As an optimized scheme, the movable die comprises a movable die plate and a movable die fixing plate which are arranged in parallel, a push plate which slides longitudinally is arranged between the movable die plate and the movable die fixing plate, a movable die shovel base is fixedly connected on the push plate in parallel corresponding to each movable die core on the side wall of the product, and a movable die wedge-shaped channel matched with the movable die shovel base is formed in the movable die core on the side wall of the product.
As an optimized scheme, a top plate sliding longitudinally is arranged between the movable die plate and the push plate, a feeding gap is arranged between the top plate and the push plate in a normal state, a connecting rod connected with the movable die core at the side edge of the bottom surface of the product is fixedly connected to the top plate, and a reset spring respectively propped against the top plate and the movable die plate is sleeved on the connecting rod.
As an optimized scheme, the inner wall of the movable template is fixedly connected with a plurality of air pushing cylinders, the telescopic ends of the plurality of air pushing cylinders are fixedly connected with the push plate, the air ports of the plurality of air pushing cylinders are connected with lifting cylinders through pipelines, and the bottom of the product collecting box is fixed on the telescopic ends of the lifting cylinders.
As an optimized scheme, the linkage piece comprises a driving rod horizontally fixedly connected to the side wall of the movable die, a smooth section and a rack section are arranged on the driving rod in parallel, a rotating rod is arranged on the side wall of the fixed die, one end of the rotating rod is meshed with the rack section through a gear, the other end of the rotating rod is connected with a driving shaft through a bevel gear set, a driving gear is fixedly connected to the driving shaft, a feeding rack capable of sliding transversely is meshed with the driving gear, and a release agent spraying pipe is fixedly connected to the lower surface of the feeding rack.
As an optimized scheme, the fixed die comprises fixed die fixing plates and fixed die plates which are arranged in a sliding mode, a fixed die shovel base is fixedly connected to each product top surface fixed die core on the fixed die fixing plates, a driving seat is fixedly connected to the outer wall of the product top surface fixed die core, and a fixed die wedge-shaped channel matched with the fixed die shovel base is formed in the driving seat.
As an optimized scheme, guide posts are fixedly connected on the fixed die fixing plate in parallel, guide holes matched with the guide posts are formed in the fixed die plate, the guide posts penetrate through the guide holes and are fixedly connected with limiting plates, mounting grooves are formed in the inner edges of the guide holes, pressure springs are sleeved on the guide posts, two ends of each pressure spring are respectively abutted to the fixed die fixing plate and the mounting grooves, and avoiding grooves for avoiding the limiting plates are formed in the movable die plate.
Compared with the prior art, the invention has the beneficial effects that:
after the die is opened, when the movable die retreats to a preset position and a product needs to be ejected out, the ejection telescopic cylinder stretches to drive the push plate to move, the push plate drives the movable die shovel base to move, the movable die shovel base drives the movable die core of the side wall of the product to slide outwards horizontally under the action of the wedge-shaped channel of the movable die, the side wall of the product with deeper glue position is separated from the movable die core of the side wall of the product, and the holding power between the movable die core of the side wall of the product and the product is reduced;
when the push plate moves a certain distance and then contacts with the top plate, the push plate pushes the top plate to move, the top plate drives the bottom surface side of the product to move along the movable mold core through the connecting rod to eject the product, so that the separation of the product and the central movable mold core of the bottom surface of the product is realized, the ejection of the product is facilitated, the top printing of the product is prevented, and the yield of the product is improved;
when the push plate is pushed to move by the extension of the ejection telescopic cylinder, the push plate drives the push plate to move, gas in the push plate is compressed, the gas enters the lifting cylinder through the pipeline, the lifting cylinder drives the product collecting box to ascend, and when the product is ejected, the product collecting box ascends to a region between the movable die and the fixed die to collect the ejected product, so that the automatic collection of the product through mechanical linkage of the device is realized, the debugging operation of equipment is reduced, and the die is effectively prevented from being crushed;
when the mold release agent is required to be sprayed, the movable mold and the fixed mold move in the mold opening process, the movable mold pulls the driving rod to move, after the movable mold moves to a certain distance, the rack section on the driving rod contacts with the gear and drives the rotating rod to rotate, the rotating rod drives the driving shaft to rotate by using the bevel gear set, the driving shaft drives the feeding rack to horizontally slide by using the driving gear, the feeding rack drives the mold release agent spraying pipe to enter between the movable mold and the fixed mold, and the mold release agent is sprayed by using the spray head;
after the release agent spraying is finished, when the mold is required to be closed, the movable mold moves towards the direction of the fixed mold to drive the driving rod to move reversely, and the release agent spraying pipe moves to the outside of the mold under the driving of the feeding rack, so that the control of the entry and exit of the release agent spraying pipe is realized automatically through the linkage piece, the debugging time used for process adjustment is reduced, and the equipment utilization rate is improved;
when the injection molding is completed and needs to be opened, the movable mold is reset, the fixed mold plate is sprung away from the fixed mold fixing plate under the action of the pressure spring, and under the action of the fixed mold shovel base and the fixed mold wedge-shaped channel, the fixed mold kernel on the top surfaces of the two products is driven to move outwards, so that the separation from the top surfaces of the products is realized, the phenomenon that the products fall down due to the fact that the holding power of the fixed mold on the products is large is prevented, and the yield of the products is improved;
and cooling waterways are respectively arranged on the fixed die core on the top surface of the product and the movable die core on the side wall of the product, the cooling waterways cool the product, the cooling time of the product is reduced, the injection molding period is shortened, and the production yield is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of the structure of the bottom side edge movable mold insert of the product of the present invention;
FIG. 3 is a schematic view of a linkage structure according to the present invention;
FIG. 4 is a schematic view of the structure of the push plate of the present invention;
FIG. 5 is a schematic view of the structure of the lift cylinder of the present invention;
fig. 6 is a schematic structural view of a compression spring according to the present invention;
fig. 7 is a schematic structural view of a cooling water channel according to the present invention.
In the figure: 1-fixing the mold; 2-a movable mould; 3-a top surface fixed mould core of the product; 4-a fixed die shovel base; 5-a driving seat; 6-a guide post; 7-limiting plates; 8, a product collecting box; 9, moving the mold core on the side wall of the product; 10, a central moving die core on the bottom surface of the product; 11-a movable mold core at the bottom side edge of the product; 12-a drive rod; 13-a rack section; 14-smooth section; 15-a gear; 16-rotating the rod; 17-bevel gear sets; 18-a drive shaft; 19-a drive gear; 20-feeding racks; 21-a release agent spray tube; 22-a release agent tank; 23-a fixed die fixing plate; 24-a fixed template; 25-moving templates; 26-a movable die fixing plate; 27-a push plate; 28-top plate; 29-connecting rods; 30-a return spring; 31-a movable mould shovel base; 32-ejecting the telescopic cylinder; 33-a die closing telescopic cylinder; 34-horizontal axis; 35-pushing cylinder; 36-lifting a cylinder; 37-piping; 38-a compression spring; 39-mounting slots; 40-cooling waterway; 41-a frame; 42-hard tube.
Detailed Description
Embodiments of the technical scheme of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present invention, and thus are merely examples, and are not intended to limit the scope of the present invention.
As shown in fig. 1 to 7, the demoulding structure of the injection mould comprises a fixed mould 1 and a movable mould 2 which is horizontally and horizontally arranged along the longitudinal direction, wherein a central movable mould core 10 on the bottom surface of the product is fixedly arranged in the movable mould 2, a side edge movable mould core 11 on the bottom surface of the product, which is horizontally and horizontally sliding, is sleeved on the central movable mould core 10 on the bottom surface of the product, two side wall movable mould cores 9 on the side edge of the bottom surface of the product, which are oppositely and oppositely moved along the transverse direction, are arranged on two sides of the side edge movable mould core 11,
two product top surface fixed mould kernels 3 which are arranged in a transversely relative sliding manner are arranged in the fixed mould 1.
The lower area between the fixed die 1 and the movable die 2 is provided with a product collecting box 8 which is vertically lifted, when the two product side wall movable die cores 9 do opposite movements, the product collecting box 8 is lifted to the area between the fixed die 1 and the movable die 2, and when the two product side wall movable die cores 9 do opposite movements, the product collecting box 8 is lifted off the area between the fixed die 1 and the movable die 2.
When the fixed die 1 and the movable die 2 are opened, the release agent spraying pipe 21 extending to the area between the fixed die 1 and the movable die 2 is arranged by utilizing the linkage, and when the fixed die 1 and the movable die 2 are closed, the release agent spraying pipe 21 is withdrawn from the area between the fixed die 1 and the movable die 2 by utilizing the linkage.
The product top surface fixed die core 3 and the product side wall movable die core 9 are respectively provided with a cooling water channel 40, the outer walls of the product top surface fixed die core 3 and the product side wall movable die core 9 are fixedly connected with hard pipes 42 communicated with the cooling water channel 40, and avoidance holes for avoiding the hard pipes 42 are formed in the fixed die plate 24 and the movable die plate 25.
The movable mould 2 comprises a movable mould plate 25 and a movable mould fixing plate 26 which are arranged in parallel, a push plate 27 which longitudinally slides is arranged between the movable mould plate 25 and the movable mould fixing plate 26, a movable mould shovel base 31 is fixedly connected on the push plate 27 in parallel corresponding to each product side wall movable mould core 9, and a movable mould wedge-shaped channel matched with the movable mould shovel base 31 is formed in the product side wall movable mould core 9.
A top plate 28 sliding longitudinally is arranged between the movable mould plate 25 and the push plate 27, a feeding gap is arranged between the top plate 28 and the push plate 27 in a normal state, a connecting rod 29 connected with the movable mould core 11 at the side edge of the bottom surface of the product is fixedly connected to the top plate 28, and a return spring 30 respectively propped against the top plate 28 and the movable mould plate 25 is sleeved on the connecting rod 29.
A plurality of air pushing cylinders 35 are fixedly connected to the inner wall of the movable template 25, the telescopic ends of the plurality of air pushing cylinders 35 are fixedly connected with the push plate 27, the air ports of the plurality of air pushing cylinders 35 are connected with a lifting cylinder 36 through pipelines, and the bottom of the product collecting box 8 is fixed to the telescopic ends of the lifting cylinder 36.
The pushing cylinder 35 and the lifting cylinder 36 comprise a cylinder body, one end of the cylinder body is fixedly connected with an end plate, a piston is arranged in the cylinder body in a sliding manner, a telescopic rod is fixed on the piston, the telescopic rod is correspondingly fixedly connected with the pushing plate 27 or the product collecting box 8, a pipeline 37 is communicated with the inner cavity of the pushing cylinder through the end plate, and lifting of the lifting cylinder 36 is driven through expansion and contraction of the pushing cylinder 35.
The linkage piece comprises a driving rod 12 horizontally fixedly connected to the side wall of the movable die 2, a smooth section 14 and a rack section 13 are arranged on the driving rod 12 in parallel, a rotating rod 16 is arranged on the side wall of the fixed die 1, one end of the rotating rod 16 is meshed with the rack section 13 through a gear 15, the other end of the rotating rod 16 is connected with a driving shaft 18 through a bevel gear group 17, a driving gear 19 is fixedly connected to the driving shaft 18, a feeding rack 20 sliding transversely is meshed with the driving gear 19, and a release agent spraying pipe 21 is fixedly connected to the lower surface of the feeding rack 20.
The fixed die 1 comprises a fixed die fixing plate 23 and a fixed die plate 24 which is arranged on the fixed die fixing plate 23 in a sliding manner, a fixed die shovel base 4 is fixedly connected on the fixed die fixing plate 23 corresponding to each product top surface fixed die core 3, a driving seat 5 is fixedly connected on the outer wall of each product top surface fixed die core 3, and a fixed die wedge-shaped channel matched with the fixed die shovel base 4 is formed in the driving seat 5.
The fixed die fixing plate 23 is fixedly connected with a guide post 6 in parallel, the fixed die plate 24 is provided with a guide hole matched with the guide post 6, the guide post 6 penetrates through the guide hole and is fixedly connected with a limiting plate 7, the inner edge of the guide hole is provided with a mounting groove 39, the guide post 6 is sleeved with a pressure spring 38, two ends of the pressure spring 38 respectively abut against the fixed die fixing plate 23 and the mounting groove 39, and the movable die plate 25 is provided with an avoidance groove for avoiding the limiting plate 7.
The opposite side walls of the release agent spraying pipe 21 are respectively and fixedly connected with spray heads in parallel.
A release agent tank 22 is connected to the inlet end of the release agent spraying pipe 21.
An ejection telescopic cylinder 32 is horizontally fixedly connected to the outer wall of the movable die fixing plate 26, and the telescopic end of the ejection telescopic cylinder 32 penetrates through the movable die fixing plate 26 and is fixedly connected with the push plate 27.
The outer wall of the movable mould fixing plate 26 is fixedly connected with a horizontally arranged mould clamping telescopic cylinder 33 in parallel, the cylinder body of the mould clamping telescopic cylinder 33 is fixed on a frame 41, the frame 41 is horizontally fixedly connected with a transverse shaft 34, and the movable mould fixing plate 26 is slidably supported on the transverse shaft 34.
The back of the heart mould core 10 in the bottom surface of the product is fixedly connected to the movable mould fixing plate 26 through a rod body.
The movable mould core groove is arranged in the movable mould plate 25, the fixed mould core groove is arranged in the fixed mould plate 24, and a sliding groove sliding block structure is arranged between the fixed mould core 3 on the top surface of the product and the fixed mould core groove and between the movable mould core 9 on the side wall of the product and the movable mould core groove for realizing auxiliary sliding.
The working principle of the device is as follows:
when the die is opened, the die clamping telescopic cylinder 33 retreats to drive the movable die 2 to retreat, after the movable die 2 is separated from the fixed die plate 24, the fixed die plate 24 is separated from the fixed die fixing plate 23 under the action of the pressure spring 38, and the fixed die shovel base 4 and the driving seat 5 move outwards to realize separation from the top surfaces of the products; then the ejection telescopic cylinder 32 stretches out to drive the push plate 27 to move, the push plate 27 drives the movable die shovel base 31 to move and moves the movable die core 9 on the side wall of the product outwards to separate the movable die core from the side wall of the product, and then the push plate 27 continuously feeds and abuts against the top plate 28 and then drives the side edge of the bottom surface of the product to stretch out along the movable die core 11 by using the connecting rod 29 to separate the bottom surface of the product from the heart die core 10 in the bottom surface of the product and eject the product; finally, the ejection telescopic cylinder 32 is reset, and the side edge moving die core 11 at the bottom surface of the product is reset under the action of the reset spring 30;
meanwhile, when the push plate 27 moves, under the action of the air pushing cylinder 35 and the lifting cylinder 36, the product collecting box 8 is lifted to the area between the fixed die 1 and the movable die 2, the ejected product can fall into the product collecting box 8, and when the ejection telescopic cylinder 32 resets, the air pushing cylinder 35 is driven to move reversely, so that the lifting cylinder 36 is driven to descend, and the product collecting box 8 is withdrawn from the area between the fixed die 1 and the movable die 2;
meanwhile, in the process of retreating the movable die 2, the release agent spraying pipe 21 is driven by the linkage piece to enter a region between the fixed die 1 and the movable die 2, and after a product is ejected, the release agent is ejected from a nozzle by the release agent box 22, so that the release agent spraying work is completed;
when the die is closed, the movable die 2 is pushed to move by the die closing telescopic cylinder 33, after the movable die 2 is propped against the fixed die plate 24, the pressure spring 38 in the fixed die plate 24 is compressed to gradually drive the fixed die plate 24 to be attached to the fixed die fixed plate 23, and under the action of the fixed die shovel base 4 and the driving seat 5, the fixed die kernels 3 on the top surfaces of two products are moved in opposite directions and closed, so that the die closing process is realized;
meanwhile, in the feeding process of the movable die 2, the linkage piece is utilized to reversely rotate to drive the release agent spraying pipe 21 to exit the area between the fixed die 1 and the movable die 2, so that avoidance is realized;
after the die is opened, when the movable die 2 is retreated to a preset position and a product is required to be ejected, the ejection telescopic cylinder 32 stretches to drive the push plate 27 to move, the push plate 27 drives the movable die shovel base 31 to move, the movable die shovel base 31 drives the movable die core 9 of the side wall of the product to slide outwards horizontally under the action of the wedge-shaped channel of the movable die, and the side wall with a deeper glue position of the product is separated from the movable die core 9 of the side wall of the product, so that the holding power between the movable die core 9 of the side wall of the product and the product is reduced;
when the push plate 27 moves a certain distance and then contacts with the top plate 28, the push plate 27 pushes the top plate 28 to move, the top plate 28 drives the side of the bottom surface of the product to move along the movable die core 11 through the connecting rod 29 to eject the product, so that the separation of the product and the heart die core 10 in the bottom surface of the product is realized, the ejection of the product is facilitated, the generation of top marks on the product is prevented, and the yield of the product is improved;
when the push plate 27 is pushed to move by the extension of the ejection telescopic cylinder 32, the push plate 27 drives the push plate 35 to move, gas in the push plate 35 is compressed, the gas enters the lifting cylinder 36 through a pipeline, the lifting cylinder 36 drives the product collecting box 8 to ascend, and when a product is ejected, the product collecting box 8 ascends to a region between the movable die 2 and the fixed die 1 to collect the ejected product, so that the mechanical linkage of the device is realized, the product is automatically collected, the debugging operation of equipment is reduced, and the die is effectively prevented from being crushed;
when the mold release agent is required to be sprayed, in the mold opening process of the movable mold 2 and the fixed mold 1, the movable mold 2 pulls the driving rod 12 to move, after the driving rod moves to a certain distance, the rack section 13 on the driving rod 12 contacts with the gear 15 and drives the rotating rod 16 to rotate, the rotating rod 16 drives the driving shaft 18 to rotate by using the bevel gear set 17, the driving shaft 18 drives the feeding rack 20 to horizontally slide by using the driving gear 19, the feeding rack 20 drives the mold release agent spraying pipe 21 to enter between the movable mold 2 and the fixed mold 1, and the mold release agent is sprayed by using the spray head;
after the release agent spraying is finished, when the mold is required to be closed, the movable mold 2 moves towards the direction of the fixed mold 1 to drive the driving rod 12 to move reversely, the release agent spraying pipe 21 moves to the outside of the mold under the driving of the feeding rack 20, the automatic control of the in-out of the release agent spraying pipe 21 through the linkage piece is realized, the debugging time used for process adjustment is reduced, and the equipment utilization rate is improved;
when the injection molding is completed and needs to be opened, the movable mold 2 is reset, the fixed mold plate 24 is sprung away from the fixed mold fixing plate 23 under the action of the pressure spring 38, and under the action of the fixed mold shovel base 4 and the fixed mold wedge-shaped channel, the fixed mold insert 3 on the top surfaces of two products is driven to move outwards, so that the separation from the top surfaces of the products is realized, the phenomenon that the products fall down due to the fact that the holding power of the fixed mold 1 on the products is large is prevented, and the yield of the products is improved;
and the cooling waterways 40 are respectively arranged on the fixed die core 3 on the top surface of the product and the movable die core 9 on the side wall of the product, the cooling waterways 40 cool the product, the cooling time of the product is reduced, the injection molding period is shortened, and the production yield is improved.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention, and are intended to be included within the scope of the appended claims and description.
Claims (5)
1. Injection mold drawing of patterns structure, its characterized in that: comprises a fixed die (1) and a movable die (2) which is arranged along the longitudinal horizontal sliding, wherein a product bottom surface center movable die core (10) is fixedly arranged in the movable die (2), a product bottom surface side edge movable die core (11) which is longitudinally sliding is sleeved on the product bottom surface center movable die core (10), two product side wall movable die cores (9) which are transversely and oppositely moved are arranged at two sides of the product bottom surface side edge movable die core (11),
two product top surface fixed mould kernels (3) which are arranged in a sliding manner along the transverse direction are arranged in the fixed mould (1),
when the fixed die (1) and the movable die (2) are opened, a release agent spraying pipe (21) extending to the area between the fixed die (1) and the movable die (2) is arranged through a linkage piece, when the fixed die (1) and the movable die (2) are closed, the release agent spraying pipe (21) is withdrawn from the area between the fixed die (1) and the movable die (2) by using the linkage piece,
the movable mould (2) comprises a movable mould plate (25) and a movable mould fixing plate (26) which are arranged in parallel, a push plate (27) which slides longitudinally is arranged between the movable mould plate (25) and the movable mould fixing plate (26), a movable mould shovel base (31) is fixedly connected on the push plate (27) corresponding to each movable mould core (9) on the side wall of the product in parallel, a movable mould wedge-shaped channel matched with the movable mould shovel base (31) is arranged on the movable mould core (9) on the side wall of the product,
a top plate (28) sliding longitudinally is arranged between the movable die plate (25) and the push plate (27), a feeding gap is arranged between the top plate (28) and the push plate (27) in a normal state, a connecting rod (29) connected with the movable die core (11) at the side edge of the bottom surface of the product is fixedly connected on the top plate (28), a return spring (30) respectively propped against the top plate (28) and the movable die plate (25) is sleeved on the connecting rod (29),
the fixed die (1) comprises a fixed plate (23) and a fixed die plate (24) which is slidably arranged on the fixed plate (23), a fixed die shovel base (4) is fixedly connected on the fixed die plate (23) corresponding to each product top surface fixed die core (3), a driving seat (5) is fixedly connected on the outer wall of the product top surface fixed die core (3), a fixed die wedge-shaped channel matched with the fixed die shovel base (4) is arranged on the driving seat (5),
guide posts (6) are fixedly connected on the fixed die fixing plate (23) in parallel, guide holes matched with the guide posts (6) are formed in the fixed die plate (24), the guide posts (6) penetrate through the guide holes and are fixedly connected with limiting plates (7), mounting grooves (39) are formed in the inner edges of the guide holes, pressure springs (38) are sleeved on the guide posts (6), two ends of each pressure spring (38) respectively abut against the fixed die fixing plate (23) and the mounting grooves (39), and avoiding grooves for avoiding the limiting plates (7) are formed in the movable die plate (25).
2. The injection mold release structure according to claim 1, wherein: the fixed die is characterized in that a product collecting box (8) which vertically ascends and descends is arranged in a lower area between the fixed die (1) and the movable die (2), when two movable die cores (9) on the side wall of the product do opposite movements, the product collecting box (8) ascends to an area between the fixed die (1) and the movable die (2), and when two movable die cores (9) on the side wall of the product do opposite movements, the product collecting box (8) descends and exits from the area between the fixed die (1) and the movable die (2).
3. The injection mold release structure according to claim 2, characterized in that: and cooling waterways (40) are respectively arranged on the fixed die core (3) on the top surface of the product and the movable die core (9) on the side wall of the product.
4. The injection mold release structure according to claim 3, wherein: the inner wall of the movable template (25) is fixedly connected with a plurality of air pushing cylinders (35), the telescopic ends of the plurality of air pushing cylinders (35) are fixedly connected with the push plate (27), the air ports of the plurality of air pushing cylinders (35) are connected with lifting cylinders (36) through pipelines, and the bottom of the product collecting box (8) is fixed on the telescopic ends of the lifting cylinders (36).
5. The injection mold release structure according to claim 4, wherein: the linkage piece comprises a driving rod (12) horizontally fixedly connected to the side wall of the movable die (2), a smooth section (14) and a rack section (13) are arranged on the driving rod (12) in parallel, a rotating rod (16) is arranged on the side wall of the fixed die (1), one end of the rotating rod (16) is meshed with the rack section (13) through a gear (15), the other end of the rotating rod (16) is connected with a driving shaft (18) through a bevel gear group (17), a driving gear (19) is fixedly connected to the driving shaft (18), a feeding rack (20) transversely sliding is meshed with the driving gear (19), and a release agent spraying pipe (21) is fixedly connected to the lower surface of the feeding rack (20).
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| JP2013255998A (en) * | 2012-06-11 | 2013-12-26 | Mitsubishi Electric Corp | Injection mold device and mold releasing method |
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| JP2013255998A (en) * | 2012-06-11 | 2013-12-26 | Mitsubishi Electric Corp | Injection mold device and mold releasing method |
| CN109702966A (en) * | 2019-03-08 | 2019-05-03 | 徐嘉辉 | A kind of injection mold |
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