A two-color injection mold for the cover of the water cup holder in the center console of a car

Abstract

A two-color injection mold for a cup holder cover at the center control position of an automobile comprises a front mold group and a rear mold group, the rear mold group comprises a rear bottom plate, a rear template is fixedly connected to the rear bottom plate through a rear iron, and two rear core plates are embedded in parallel on the rear template; the two rear core plates and the front mold are assembled to form a first cavity and a second cavity; an ejector plate is respectively arranged between two adjacent rear irons, a plurality of ejectors and a plurality of slide seats are arranged on the ejector plate, a diagonal tie rod is slidably installed on the slide seat, and the front ends of the ejectors and the diagonal tie rod are respectively inserted into corresponding cavities; a sliding plate is respectively arranged between the rear bottom plate and each ejector plate, a reset rod and a special-shaped ejector are arranged on the sliding plate, and they pass through the ejector plate, the rear template and the rear core plate respectively; two lever pressing blocks are symmetrically hinged on the rear bottom plate through a pair of lever seats, and the two ends of the sliding plate are respectively pressed against the inner end of the lever pressing block, and the outer end of the lever pressing block is respectively pressed against a return needle rod. The mold can reduce manufacturing costs, improve processing efficiency and product quality.

Description

Technical Field

[0001] The invention relates to an injection mold, in particular to a double-color injection mold for a cup holder cover at a central control position of an automobile. Background Art

[0002] At present, the cup holder covers at the center console of some mid-to-high-end cars are mostly made of hard and soft glue two-color covers. The traditional processing method for this type of two-color cover injection molding requires two sets of molds and two injection molding processes; the first set of molds injects the hard glue part, and after the injection molding is completed, the product is taken out and put into the second set of molds for the second injection molding of the soft glue part, and then the complete product is taken out.

[0003] This processing method has the following problems: 1. Two sets of molds are required, and the mold cost is relatively high; 2. The injection molding cycle is relatively long, and the injection molding cost is relatively high; 3. There are many quality defects in the appearance of the product, because the secondary installation injection molding will damage the product surface, resulting in product appearance defects. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a two-color injection mold for a cup holder cover at a central control position of an automobile, which can reduce manufacturing costs and improve processing efficiency and product quality.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A two-color injection mold for a cup holder cover at a central control position of an automobile, comprising a front mold group and a rear mold group arranged front and back, wherein the rear mold group comprises a rear bottom plate, a rear template is fixedly connected to the rear bottom plate through three evenly distributed rear irons, and two rear core plates are embedded in parallel on the rear template; the two rear core plates are molded together with the two front core plates of the front mold group to form a first cavity and a second cavity arranged left and right, respectively corresponding to the semi-finished product and the finished product of the cup holder cover; the two rear core plates can interchange positions after rotating 180 degrees in situ with the rear mold group after the mold is opened;

[0007] An ejector plate is provided between two adjacent rear irons of the rear die set, and the ejector plate is slidably guided by a plurality of guide pillars provided between the rear bottom plate and the rear die plate. A plurality of ejectors and a plurality of slide seats are provided on each ejector plate, and a diagonal tie rod is slidably installed on the slide seat. The front ends of the ejectors and the diagonal tie rod pass through the rear die plate and the rear core plate respectively and are inserted into the corresponding cavity.

[0008] A sliding plate that can slide forward and backward is respectively provided between the rear bottom plate and each ejector plate. The sliding plate is slidably guided by a plurality of guide rods provided between the rear bottom plate and the rear template. Two symmetrically arranged reset rods and a plurality of special-shaped ejector pins are fixed on the sliding plate. The reset rod and the special-shaped ejector pins pass through the ejector plate, the rear template and the rear core plate respectively, and the reset rod is pressed against the front core plate of the front module. A pair of lever seats are symmetrically provided at both ends of the sliding plate on the rear bottom plate. Two lever pressing blocks are symmetrically hinged on the pair of lever seats. They are respectively pressed against the inner ends of the two lever pressing blocks, and the outer ends of the two lever pressing blocks are respectively pressed against return needle rods, which pass through the rear iron and the rear template and press against the front template of the front mold group; the special-shaped ejector pin corresponding to the first cavity is inserted into the corresponding first cavity under the push of the return needle rod after mold closing, and is used to block the soft glue injection through hole of the semi-finished product formed during the first injection molding; the special-shaped ejector pin corresponding to the second cavity is withdrawn from the corresponding second cavity under the push of the reset rod after mold closing, and is used to form a soft glue groove on the front side of the finished product during the second injection molding.

[0009] As a further preference, two rear drive cylinders are respectively provided at both ends of each ejector plate on both sides of the rear template, and one end of the cylinder rod of the two rear drive cylinders is respectively connected to the two ends of the corresponding ejector plate to drive the ejector plate to slide back and forth.

[0010] As a further preference, the front end of the inclined rod is hook-shaped so as to hook the semi-finished product and the finished product of the cup holder cover during demoulding.

[0011] As a further preference, an insert is provided in the through hole corresponding to the diagonal brace on the rear template, and the diagonal brace passes through the insert by sliding clearance.

[0012] As a further preference, a groove is provided on the outer edge of the return needle rod near the front end, and a positioning card is fixed to the front end of the through hole corresponding to the return needle rod on the rear template by a screw, and one end of the positioning card is inserted into the groove to achieve sliding limitation of the return needle rod.

[0013] As a further preference, the front module group includes a front bottom plate, a diverter plate and a fixed plate fixed in sequence, the front template is fixed to the fixed plate by three evenly distributed front irons, and two front core plates are fixedly embedded in parallel on the front template; a front ejector plate is slidably installed between two adjacent front irons through front guide columns arranged between the front template and the fixed plate, a plurality of straight ejector rods are respectively fixed on the front ejector plate and a plurality of inclined ejector rods are slidably installed, the straight ejector rods and the inclined ejector rods respectively pass through the front template and the front core plate, and ejector blocks are respectively provided at the front ends of the inclined ejector rods, and the ejector blocks are movably embedded in the front core plate.

[0014] As a further preference, a slide seat is respectively provided on the front ejector plate corresponding to the rear end of each inclined ejector rod, and the rear end of the inclined ejector rod is slidably installed in the slide groove of the corresponding slide seat through a slider.

[0015] As a further preference, two glue injection holes are symmetrically provided on the front bottom plate, and the two glue injection holes are connected to the first cavity and the second cavity respectively through a plurality of glue injection channels provided on the diverter plate, the fixed plate and the front template, and are used for injecting hard glue and soft glue respectively.

[0016] The beneficial effects of the present invention are:

[0017] 1. Since the rear mold assembly includes a rear bottom plate, a rear template is fixedly connected to the rear bottom plate through three evenly distributed rear irons, and two rear core plates are embedded in parallel on the rear template; the two rear core plates and the two front core plates of the front mold assembly are molded together to form a first cavity and a second cavity arranged on the left and right, which respectively correspond to the semi-finished product and the finished product of the cup holder cover; the special-shaped ejector corresponding to the first cavity is inserted into the corresponding first cavity under the push of the return needle rod after the mold is closed, so that the soft glue injection through hole of the semi-finished product formed during the first injection molding can be blocked to ensure that only the cup holder cover can be formed during the first injection molding. The hard rubber part of the cup holder cover is formed by the special-shaped ejector pin corresponding to the second cavity being pushed by the reset rod after mold closing, thereby forming a soft rubber groove on the front of the finished product during the second injection molding. After the mold is opened, the two rear core plates rotate 180 degrees on the spot following the rear module and then interchange their positions. The semi-finished product formed after the first injection molding can be formed into the soft rubber part of the cup holder cover by injection molding in the second cavity. Therefore, the injection molding process of the cup holder double-color cover product composed of hard rubber and soft rubber can be completed by a set of the two-color injection mold, which greatly saves the mold cost.

[0018] 2. The injection molding cycle of the product is shortened. The injection molding time of a single product only takes 60 seconds to complete, saving the time cost of labor and machines.

[0019] 3. The product is molded in one step by a two-color injection molding machine, which reduces the secondary picking and placing process and avoids product defects caused by surface damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention.

[0021] Figure 2 yes Figure 1 Top view of the .

[0022] Figure 3 yes Figure 1 Left view of .

[0023] Figure 4 yes Figure 1 Right view of .

[0024] Figure 5 yes Figure 4 AA section view.

[0025] Figure 6 yes Figure 4 BB cross-sectional view.

[0026] Figure 7 yes Figure 1 Right side view of the mid-rear module.

[0027] Figure 8 yes Figure 7 CC cross-sectional view.

[0028] Fig. 9 The utility model is a schematic diagram of assembling the reset rod, the special-shaped ejector pin and the return needle rod of the present invention.

[0029] Fig.10 The present invention is a schematic diagram of a cup holder cover product.

[0030] Fig.11 yes Fig.10 Rear view of.

[0031] In the figure: rear bottom plate 1, rear iron 2, rear template 3, front bottom plate 4, diverter plate 5, fixed plate 6, front iron 7, front template 8, front driving cylinder 9, rear driving cylinder 10, mold clamping guide column 11, slide seat 12, inclined tie rod 13, ejector plate 14, guide column 15, front ejector plate 16, pressure plate 17, front guide column 18, glue injection hole 19, slide seat 20, glue injection channel 21, inclined ejector rod 22, rear core plate 23, insert block 24, ejector block 25, front core plate 26, straight ejector rod 27, straight ejector pin 28, ejector pin 29, first cavity 30, second cavity 31, return needle rod 32, sliding plate 33, guide rod 34, reset rod 35, special-shaped ejector pin 36, lever seat 37, lever pressure block 38, return rod 39, positioning card plate 40, hard rubber part 41, soft rubber part 42. DETAILED DESCRIPTION

[0032] like Figure 1-Figure 7 As shown, the present invention relates to a two-color injection mold for a cup holder cover at a central control position of an automobile, comprising a front mold group and a rear mold group arranged front and back; the rear mold group comprises a rear bottom plate 1, on which three rear irons 2 are evenly fixed by bolts, and a rear template 3 is supported and fixedly connected by the three rear irons 2, and two rear core plates 23 are fixedly embedded in parallel on the rear template 3; the two rear core plates 23 and the two front core plates 26 of the front mold group are molded together to form a first cavity 30 and a second cavity 31 arranged on the left and right, respectively corresponding to the semi-finished product and the finished product of the cup holder cover plate; after the two rear core plates 23 are rotated 180 degrees in situ following the rear mold group after the mold is opened, they can interchange positions and cooperate with the two front core plates 26 of the front mold group;

[0033] A pin plate 14 is provided between two adjacent rear irons 2 of the rear mold group. The pin plates 14 are slidably guided by four guide pillars 15 symmetrically fixed between the rear bottom plate 1 and the rear mold plate 3. A plurality of horizontally arranged pins 29 and a plurality of slide seats 12 are fixed on each pin plate 14. In this embodiment, six pins 29 and five slide seats 12 are taken as an example. An inclined diagonal rod 13 is slidably installed in the slide groove on the slide seat 12. The front ends of the pins 29 and the diagonal rod 13 pass through the rear mold plate 3 and the rear core plate 23 respectively and are inserted into the corresponding mold cavity. An insert 24 is provided in the through hole corresponding to the diagonal rod 13 on the rear mold plate 3. The diagonal rod 13 passes through the insert 24 through the sliding clearance fit. The front end of the diagonal rod 13 is hook-shaped, so as to hook the semi-finished product and the finished product of the cup holder cover plate during demoulding to ensure smooth demoulding.

[0034] like Figure 8 and Fig. 9 As shown, a sliding plate 33 that can slide forward and backward is respectively provided between the rear bottom plate 1 and each ejector plate 14. The sliding plate 33 is slidably guided by a plurality of guide rods 34 provided between the rear bottom plate 1 and the rear template 3. Two symmetrically arranged reset rods 35 and a plurality of special-shaped ejector pins 36 are fixed on the sliding plate 33. In this embodiment, five special-shaped ejector pins are taken as an example. The reset rod 35 and the special-shaped ejector pin 36 pass through the ejector plate 14, the rear template 3 and the rear core plate 23 respectively, and the reset rod 35 is pressed against the front core plate 26 of the front mold group. A pair of lever seats 37 are symmetrically fixed at both ends of the sliding plate 33 on the rear bottom plate 1. The lever seats 37 are respectively inserted into the rectangular holes provided on the rear bottom plate 1 and fixed by screws. Two lever pressing blocks 38 are symmetrically hinged on the rod seat 37 through a pin shaft, and the two ends of the sliding plate 33 are respectively pressed against the inner ends of the two lever pressing blocks 38, and the outer ends of the two lever pressing blocks 38 are respectively pressed against the return needle rods 32, which pass through the rear iron 2 and the rear template 3 and press against the front template 8 of the front mold group; the special-shaped ejector pin 36 corresponding to the first cavity 30 is inserted into the corresponding first cavity 30 under the push of the return needle rod 32 after the mold is closed, and is used to block the soft glue injection hole of the semi-finished product formed during the first injection molding; the special-shaped ejector pin 36 corresponding to the second cavity 31 is withdrawn from the corresponding second cavity 31 under the push of the reset rod 35 after the mold is closed, and is used to form a soft glue groove on the front of the finished product during the second injection molding;

[0035] A groove is provided near the front end of the outer edge of the return needle rod 32, and a positioning card plate 40 is fixed to the front end of the through hole corresponding to the return needle rod on the rear template 3 by screws, and one end of the positioning card plate is inserted into the groove to realize the sliding limit of the return needle rod;

[0036] Two rear drive cylinders 10 are respectively provided at the two ends of each ejector plate 14 on both sides of the rear template 3. One end of the cylinder rod of the two rear drive cylinders 10 is respectively connected to the two ends of the corresponding ejector plate 14, which is used to drive the ejector plate 14 to slide forward and backward, thereby driving the ejector and the inclined rod 13 to push the finished workpiece, so as to remove the finished workpiece. Rectangular grooves and rectangular bosses that match each other are respectively provided at the four corners of the rear template 3 and the front template 8. Four mold closing guide pillars 11 are symmetrically fixed at the four corners of the rear template 3. The front ends of the mold closing guide pillars 11 are respectively inserted into the front template 8 through clearance fit to achieve guidance during mold closing.

[0037] The front mold assembly comprises a front bottom plate 4, a diverter plate 5 and a fixed plate 6 which are fixed in sequence by bolts, the front template 8 is fixed on the fixed plate 6 by three evenly distributed front irons 7, and two front core plates 26 are fixedly embedded in parallel on the front template 8; a front ejector plate 16 is slidably installed between two adjacent front irons 7 by four front guide columns 18 fixed between the front template 8 and the fixed plate 6, and a plurality of horizontally arranged return rods 39, straight ejector pins 28 and straight ejector rods 27 are respectively fixed on the front ejector plate 16 by a pressure plate 17, and a plurality of inclined ejector pins 28 and 27 are slidably installed. The inclined ejector rods 22 are arranged, and the return rods 39 are four arranged near the four corners of the pressure plate 17 and respectively pass through the front template 8 and then lean against the rear template 3. The straight ejector rod 27 and the inclined ejector rod 22 pass through the front template 8 and the front core plate 26 respectively, and the front ends of the straight ejector rod 27 and the inclined ejector rod 22 are respectively fixed with ejector blocks 25, and the ejector blocks 25 are movably embedded in the front core plate 26; the rear ends of each inclined ejector rod 22 are respectively fixed with slide seats 20 on the front ejector pin plate 16, and the rear ends of the inclined ejector rods 22 are respectively slidably installed in the slide grooves of the corresponding slide seats 20 through sliders;

[0038] Two front driving cylinders 9 are fixed on both sides of the front template 8 at the two ends of each ejector plate. One end of the cylinder rod of the two front driving cylinders 9 is respectively connected to the two ends of the corresponding front ejector plate 16, which is used to drive the front ejector plate 16 to slide back and forth, thereby driving the straight ejector rod 27 and the inclined ejector rod 22 to push the workpiece to assist in mold opening.

[0039] Two injection holes 19 are symmetrically provided on the front bottom plate 4, and the two injection holes 19 are connected to the first cavity 30 and the second cavity 31 through a plurality of injection channels 21 provided on the diverter plate 5, the fixing plate 6 and the front template 8, respectively, for injecting hard glue and soft glue.

[0040] During operation, the front mold group and the rear mold group of the injection mold are respectively installed on the fixed mold plate and the movable mold plate of the two-color injection molding machine. The two-color injection molding machine is started to drive the rear mold group to move forward and combine with the front mold. When the mold is closed, the return needle rods 32 on both sides of the corresponding first cavity 30 are pushed backward by the front mold plate 8, and the front end of the special-shaped ejector pin 36 corresponding to the first cavity 30 is driven by the lever pressing block 38 to insert into the corresponding first cavity 30, so as to block the soft glue injection hole of the semi-finished product formed during the first injection molding; the injection molding is started, and the hard glue enters the first cavity through the glue injection hole 19 corresponding to the first cavity 30 and the glue injection channel 21, and forms the semi-finished product of the cup holder cover, that is, the hard glue part 41 after solidification;

[0041] Then the moving template of the two-color injection molding machine is controlled to drive the rear mold group to retreat and reset. When retreating, the semi-finished workpiece is driven to move backward under the action of the inclined rod 13, and the front driving cylinder 9 is started at the same time to drive the front ejector plate 16 to move backward, thereby driving the straight ejector rod 27 and the inclined ejector rod 22 to push the workpiece to assist in mold opening; after resetting, the moving template is controlled to rotate 180 degrees in situ, so that the semi-finished workpiece located in the first cavity corresponds to the second cavity of the front mold group; then the moving template of the two-color injection molding machine is controlled to drive the rear mold to move forward and close the mold with the front mold again, and reset when closing the mold Under the action of the front core plate 26 of the front mold group, the rod 35 pushes the sliding plate 33 backward, so that the special-shaped ejector pin 36 corresponding to the second cavity 31 withdraws from the corresponding second cavity 31 after mold closing, thereby opening the soft glue injection through hole of the semi-finished product formed during the first injection molding, and forming a soft glue groove on the front side of the finished workpiece during the second injection molding; the injection molding is started, and the soft glue enters the second cavity through the injection hole 19 corresponding to the second cavity 31 through the injection channel 21, forming the soft glue part 42 of the cup holder cover, and the finished workpiece of the cup holder cover is formed after curing.

[0042] Finally, the moving template of the two-color injection molding machine is controlled to drive the rear mold group to retreat and open the mold. When opening the mold, the front driving cylinder 9 is started at the same time to push the front ejector plate 16 to move backward, driving the straight ejector rod 27 and the inclined ejector rod 22 to push the workpiece to assist in opening the mold; after opening the mold, the rear driving cylinder 10 is started, and the ejector plate 14 drives the ejector and the inclined rod 13 to push the finished workpiece, so that the finished workpiece can be removed. Fig.10 and Fig.11 shown.

[0043] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A two-color injection mold for a cup holder cover at the center console of a car, comprising a front mold group and a rear mold group arranged front and back, characterized in that: The rear mold assembly includes a rear bottom plate, on which a rear template is fixedly connected through three evenly distributed rear irons, and two rear core plates are embedded in parallel on the rear template; the two rear core plates are molded together with the two front core plates of the front mold assembly to form a first cavity and a second cavity arranged on the left and right, respectively corresponding to the semi-finished product and the finished product of the cup holder cover plate; after the two rear core plates are molded, they can be rotated 180 degrees in situ following the rear mold, and can be interchanged; An ejector plate is provided between two adjacent rear irons of the rear die set, and the ejector plate is slidably guided by a plurality of guide pillars provided between the rear bottom plate and the rear die plate. A plurality of ejectors and a plurality of slide seats are provided on each ejector plate, and a diagonal tie rod is slidably installed on the slide seat. The front ends of the ejectors and the diagonal tie rod pass through the rear die plate and the rear core plate respectively and are inserted into the corresponding cavity. A sliding plate that can slide forward and backward is respectively provided between the rear bottom plate and each ejector plate. The sliding plate is slidably guided by a plurality of guide rods provided between the rear bottom plate and the rear template. Two symmetrically arranged reset rods and a plurality of special-shaped ejector pins are fixed on the sliding plate. The reset rod and the special-shaped ejector pins pass through the ejector plate, the rear template and the rear core plate respectively, and the reset rod is pressed against the front core plate of the front module. A pair of lever seats are symmetrically provided at both ends of the sliding plate on the rear bottom plate. Two lever pressing blocks are symmetrically hinged on the pair of lever seats. They are respectively pressed against the inner ends of the two lever pressing blocks, and the outer ends of the two lever pressing blocks are respectively pressed against return needle rods, which pass through the rear iron and the rear template and press against the front template of the front mold group; the special-shaped ejector pin corresponding to the first cavity is inserted into the corresponding first cavity under the push of the return needle rod after mold closing, and is used to block the soft glue injection through hole of the semi-finished product formed during the first injection molding; the special-shaped ejector pin corresponding to the second cavity is withdrawn from the corresponding second cavity under the push of the reset rod after mold closing, and is used to form a soft glue groove on the front side of the finished product during the second injection molding.

2. The double-color injection mold for the cup holder cover at the center console of a car according to claim 1 is characterized by: Two rear drive oil cylinders are respectively arranged at the two ends of each ejector plate on both sides of the rear template. One end of the cylinder rod of the two rear drive oil cylinders is respectively connected to the two ends of the corresponding ejector plate to drive the ejector plate to slide forward and backward.

3. The double-color injection mold for the cup holder cover at the center console of a car according to claim 1 is characterized by: The front end of the inclined tie rod is hook-shaped so as to hook the semi-finished product and the finished product of the cup holder cover plate during demoulding.

4. A two-color injection mold for a cup holder cover at a central control position of a car according to claim 1 or 3, characterized in that: An insert is arranged in a through hole corresponding to the diagonal tie rod on the rear template, and the diagonal tie rod passes through the insert through a sliding clearance fit.

5. The double-color injection mold for the cup holder cover at the center console of a car according to claim 1 is characterized in that: A groove is provided near the front end of the outer edge of the return needle rod, and a positioning card is fixed by screws at the front end of the through hole corresponding to the return needle rod on the rear template, and one end of the positioning card is inserted into the groove to realize the sliding limit of the return needle rod.

6. The double-color injection mold for the cup holder cover at the center console of a car according to claim 1 is characterized by: The front module group includes a front bottom plate, a diverter plate and a fixed plate fixed in sequence, the front template is fixed to the fixed plate by three evenly distributed front irons, and two front core plates are fixedly embedded in parallel on the front template; a front ejector plate is slidably installed between two adjacent front irons through front guide columns arranged between the front template and the fixed plate, a plurality of straight ejector rods are respectively fixed on the front ejector plate and a plurality of inclined ejector rods are slidably installed, the straight ejector rods and the inclined ejector rods respectively pass through the front template and the front core plate, and ejector blocks are respectively provided at the front ends of the inclined ejector rods, and the ejector blocks are movably embedded in the front core plate.

7. The double-color injection mold for the cup holder cover at the center console of a car according to claim 6 is characterized by: A slideway seat is respectively arranged on the front ejector plate corresponding to the rear end of each inclined ejector rod, and the rear end of the inclined ejector rod is slidably installed in the slide groove of the corresponding slideway seat through a sliding block.

8. The double-color injection mold for the cup holder cover at the center console of a car according to claim 6 is characterized by: Two injection holes are symmetrically arranged on the front bottom plate, and the two injection holes are connected with the first cavity and the second cavity through a plurality of injection channels arranged on the diverter plate, the fixing plate and the front template, and are used for injecting hard glue and soft glue respectively.

Images