Penetrating type double-color double-face forming mold

Abstract

The utility model discloses a penetrating type double-color double-face forming mold which comprises two fixed mold assemblies, two movable mold assemblies and a transposition mechanism arranged between the two movable mold assemblies, the two movable mold assemblies are matched with the two fixed mold assemblies in a one-to-one correspondence mode after the positions of the two movable mold assemblies are exchanged through the transposition mechanism, and the two movable mold assemblies are matched with the two fixed mold assemblies in a one-to-one correspondence mode. A mold core capable of being pulled in the mold opening and closing direction is arranged in a mold cavity formed by matching; according to the locking assembly disclosed by the utility model, double-sided second-color glue injection can be simultaneously carried out, so that integral forming of a second-color product is realized, joint marks caused by multi-time glue injection are avoided, the product quality is improved, a first-color product does not need to be turned over in the glue injection process, the production efficiency is improved, the overall structure of a mold is simplified, and the production cost is effectively reduced.

Description

Technical Field

[0001] The utility model relates to a two-color product injection molding technology, in particular to a through-type two-color double-sided molding mold. Background Art

[0002] Two-color injection molding products are widely accepted and used for their many advantages. Traditional two-color injection molding products usually use two injection molding machines. First, one injection molding machine performs the first color injection molding, removes the first color product (semi-finished product), and puts it into another injection molding machine as an insert for the second injection molding, and finally obtains the two-color product (finished product). Due to the manual transfer of semi-finished products, the production efficiency is low. For this reason, a rotary two-color injection mold is used in the prior art. After the rotary two-color injection mold molds the first color product, the mold is opened, and the lower plate, mold foot, ejector plate, movable mold plate, and movable mold insert are driven by the injection molding machine. The mold is then rotated 180° together with the product (i.e. all parts on the movable mold side) to make the first-color product correspond to the second-color gate on the fixed mold side. At this time, the mold is closed, and the first-color product is used as an insert to inject the second-color glue to obtain a molded two-color product. However, since the first-color product is used as an insert, it forms a barrier to the second-color glue. The second-color glue can only be poured onto one product surface of the first-color product opposite to the gate, and cannot be poured onto the other product surface of the first-color product, resulting in the inability to simultaneously inject the second-color glue on both sides. It is necessary to inject the glue by turning the surface over in batches, which easily produces joint marks on the product, reducing product quality and production efficiency. Utility Model Content

[0003] The utility model aims to provide a through-type two-color double-sided molding die, which can simultaneously perform double-sided second color glue injection, thereby improving the product quality and production efficiency of two-color products.

[0004] The purpose of the utility model is achieved through the following technical solutions:

[0005] A through-type two-color double-sided molding die comprises two fixed die assemblies and two movable die assemblies, and a transposition mechanism arranged between the two movable die assemblies. The two movable die assemblies are matched with the two fixed die assemblies one by one after the positions are swapped by the transposition mechanism, and a core that can be pulled out along the opening and closing direction of the die is arranged in the die cavity formed by the cooperation.

[0006] By setting a transposition mechanism and swapping the positions of the two movable mold assemblies after the first color molding, the first color product on the movable mold assembly can be transferred from the first color cavity to the second color product in the second color cavity. A core is provided in the first color cavity, and the core is pulled to form a penetrating glue injection channel on the first color product. Through the glue injection channel, the second color glue can flow from the front side of the first color product to the back side of the first color product, thereby realizing simultaneous double-sided second color glue injection.

[0007] On the basis of the above technical solution, the present invention can be improved as follows:

[0008] Furthermore, a core pulling channel connected to the mold cavity is formed inside the movable mold assembly, the core pulling channel is parallel to the mold opening and closing direction, and a core pulling piece connected to the mold core is movably arranged in the core pulling channel.

[0009] Furthermore, the movable mold assembly includes a movable mold plate, and a movable mold insert accommodating groove for accommodating a movable mold insert is provided on the clamping surface of the movable mold plate, and a core pulling channel is formed between the movable mold insert and the movable mold insert accommodating groove; the core pulling part is a spring plate with an annular side wall, and the spring plate has an extension portion extending on the side close to the fixed mold assembly, and the extension portion of the spring plate serves as a core.

[0010] Furthermore, the movable mold insert accommodating groove is provided with an annular boss on the bottom wall of the groove, and the outer peripheral wall of the annular boss and the bottom wall of the groove of the movable mold insert accommodating groove form a first sub-stroke groove; an annular flange is provided on the inner side of the annular side wall of the spring plate, and the annular boss in the movable mold insert accommodating groove cooperates with the inner circle of the annular flange of the spring plate, and the movable mold insert is provided with a second sub-stroke groove at the cooperation position with the annular flange of the spring plate, and the first sub-stroke groove and the second sub-stroke groove are spliced ​​to form a stroke chamber, and the annular flange of the spring plate can move in the stroke chamber along the opening and closing direction of the mold.

[0011] Furthermore, the movable template is provided with a driving mechanism mounting groove for accommodating the driving mechanism on the plate surface away from the fixed template, and a through groove connected to the movable mold insert accommodating groove is provided on the bottom wall of the driving mechanism mounting groove, and the driving mechanism can abut against the spring plate through the through groove in the driving mechanism mounting groove.

[0012] Furthermore, the movable mold assembly also includes a movable mold pad, which is arranged on the side of the movable mold plate away from the fixed mold plate and closes the driving mechanism mounting groove on the movable mold plate; the driving mechanism includes a seesaw, which is rotatably mounted on the movable mold pad through a support block, and the first swing end of the seesaw abuts against the side of the spring plate away from the fixed mold plate.

[0013] Furthermore, a first pressure column is provided on one of the fixed mold assemblies, and a second pressure column is provided on the other fixed mold assembly. When the first color mold is closed, the first pressure column can extend into the driving mechanism mounting groove inside the movable mold plate to press the second swinging end of the seesaw plate; when the second color mold is closed, the second pressure column can pass through the movable mold insert and extend into the stroke chamber to press the annular flange of the spring plate.

[0014] Furthermore, the driving mechanism includes a top plate, which is installed on the movable mold pad through a spring and a guide rod and is located in a driving mechanism mounting groove inside the movable mold plate; a second pressure column is arranged on the fixed mold assembly of the second color mold, and the second pressure column can pass through the movable mold insert and extend into the stroke chamber to press the annular flange of the spring plate.

[0015] Furthermore, a core pulling channel communicating with the mold cavity is formed inside the fixed mold assembly, the core pulling channel is parallel to the mold opening and closing direction, and a core pulling piece connected to the mold core is movably arranged in the core pulling channel.

[0016] Furthermore, the fixed mold assembly includes a fixed mold plate, and a fixed mold insert accommodating groove for accommodating a fixed mold insert is provided on the mold surface of the fixed mold plate, and a core pulling channel is formed between the fixed mold insert and the fixed mold insert accommodating groove; the core pulling part is a spring plate with an annular side wall, and the spring plate has an extension portion extending on the side close to the movable mold assembly, and the extension portion of the spring plate serves as a core.

[0017] Compared with the prior art, the utility model technology has the following advantages:

[0018] The utility model provides a transposition mechanism, sets a core in the first color cavity, and pulls the core, so that a penetrating glue injection channel can be formed on the first color product, and the second color glue can flow from the front side of the first color product to the back side of the first color product through the glue injection channel, so that the second color glue can be injected on both sides at the same time, and the second color product can be integrally formed, avoiding the joint marks caused by injection of glue in batches, improving product quality, and there is no need to turn over the first color product during the injection process, thereby improving production efficiency, simplifying the overall structure of the mold, and effectively reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] Figure 1 This is a schematic structural diagram of a through-type two-color double-sided molding die according to Embodiment 1;

[0021] Figure 2 This is a schematic diagram of the mold structure when the first color mold is closed in Example 1;

[0022] Figure 3 for Figure 2 A local enlarged view of point A;

[0023] Figure 4 This is a schematic diagram of the mold structure when the second color mold is closed in Example 1;

[0024] Figure 5 for Figure 4 A partial enlarged view of point B;

[0025] Figure 6 It is a structural schematic diagram of the dynamic template;

[0026] Figure 7 It is a structural schematic diagram of the movable mold insert;

[0027] Figure 8 It is a structural schematic diagram of the spring plate;

[0028] Fig. 9 The first movable mold assembly diagram after the movable mold plate is removed;

[0029] Fig.10 The second movable mold assembly assembly diagram after the movable mold plate is removed;

[0030] Fig.11 This is a schematic diagram of the local structure of the mold when the first color mold is closed in Example 2;

[0031] Fig.12 This is a schematic diagram of the local structure of the mold when the second color mold is closed in Example 2;

[0032] Fig.13 Schematic diagram of the local structure of the mold when the second color mold is closed in Example 3.

[0033] Markings on the accompanying drawings: 1-fixed mold plate, 2-fixed mold fixing plate, 3-movable mold plate, 4-movable mold insert, 5-hot nozzle, 6-annular boss, 7-spring plate, 7a-annular flange, 7b-extension portion, 7c-reinforcement beam, 8-limiting boss, 9-movable mold pad, 10-rocker, 11-support block, 12-first pressure column, 13-second pressure column, 14-hot runner plate, 15-electric turntable, 16-connecting plate, 17-top plate, 17a-first guide rod hole, 17b-second guide rod hole, 18-spring, 19-guide rod, 19a-blocking cap, 20-fixed mold insert, 21-movable mold insert accommodating groove, 22-driving mechanism mounting groove, 23-fixed mold pad, 24-top column. DETAILED DESCRIPTION

[0034] The following is a further description of the specific embodiments of the present invention in conjunction with the accompanying drawings. The description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each embodiment of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0035] Embodiment 1

[0036] See also Figures 1 to 10 The utility model relates to a through-type two-color double-sided molding die for manufacturing two-color products; the through-type two-color double-sided molding die comprises two fixed mold assemblies and two movable mold assemblies arranged between the two fixed mold assemblies, the fixed mold assemblies and the movable mold assemblies cooperate with each other in a one-to-one manner to respectively form a first color cavity for pouring a first color product and a second color cavity for pouring a second color product; a transposition mechanism is arranged between the two movable mold assemblies, and the positions of the two movable mold assemblies are swapped by the transposition mechanism to transfer the first color product on the movable mold assembly from the first color cavity to the second color cavity to complete the second color product.

[0037] Driven by the movable stroke mechanism, the fixed mold assembly and the movable mold assembly are closed or separated to achieve mold closing or mold opening; when the mold is closed, the first color product is formed by forming a first color cavity, and the second color product is formed by forming a second cavity; when the mold is opened, the transposition mechanism rotates the two movable mold assemblies to swap the positions of the first color product on the movable mold assembly from the first color cavity to the second color product in the second color cavity.

[0038] The movable stroke mechanism used in this embodiment is a horizontal injection molding machine in the prior art. A guide rail and two connecting seats connected to the guide rail in an opposite manner are arranged on the workbench of the horizontal injection molding machine. The two connecting seats can move relatively along the guide rail. For the convenience of description, the two fixed mold assemblies are respectively named as the first fixed mold assembly and the second fixed mold fixed assembly, and the two movable mold assemblies are respectively named as the first movable mold assembly and the second movable mold assembly.

[0039] During assembly, the first fixed mold assembly is installed on one of the connecting seats on the horizontal injection molding machine, the second fixed mold fixed assembly of the second mold unit is installed on the other connecting seat on the horizontal injection molding machine, the shifting mechanism is installed on the workbench of the horizontal injection molding machine, the first movable mold assembly is connected to one side of the shifting mechanism and is opposite to the first fixed mold assembly, and the second movable mold assembly is connected to the other side of the shifting mechanism and is opposite to the second fixed mold fixed assembly; the horizontal injection molding machine provides driving force to the two connecting seats, and the two connecting seats approach or move away from each other, and accordingly, drive the fixed mold assembly to move toward or away from the movable mold assembly to achieve mold closing or mold opening.

[0040] During the first mold closing, a first color cavity is formed between the first fixed mold assembly and the first movable mold assembly, and the first first color product is molded in the first color cavity; during the first mold opening, the first first color product is located on the first movable mold assembly, and the first movable mold assembly and the second movable mold assembly are swapped by the transposition mechanism, that is, the first movable mold assembly is opposite to the second fixed mold fixed assembly, and the second movable mold assembly is opposite to the first fixed mold assembly; during the second mold closing, a second color cavity is formed between the second fixed mold fixed assembly and the first movable mold assembly, and the first second color product is formed in the second color cavity, and at the same time, a first color cavity is formed between the first fixed mold assembly and the second movable mold assembly, and the second first color product is molded in the first color cavity; during the second mold opening, the first second color product is removed, and the second first color product is removed. Located on the second movable mold assembly, the first movable mold assembly and the second movable mold assembly are swapped again through the transposition mechanism, that is, the first fixed mold assembly is restored to be opposite to the first movable mold assembly, and the second fixed mold fixed assembly is opposite to the second movable mold assembly; when the mold is closed for the third time, a second color cavity is formed between the second fixed mold fixed assembly and the second movable mold assembly, and a first color cavity is formed between the first fixed mold assembly and the first movable mold assembly, and the second second color product is molded in the second color cavity, and the third first color product is molded in the first color cavity; the above steps are repeated in this way to continuously manufacture multiple two-color products. During the entire injection molding process, there is no need to manually transfer the product, and the first color product and the second color product can be injected at the same time by closing the mold once, thereby improving production efficiency and adapting to large-scale production.

[0041] The first fixed mold assembly and the second fixed mold fixing assembly include a fixed mold plate 1 and a fixed mold fixing plate 2 which are connected to each other, the fixed mold plate 1 is provided with a first sub-cavity on the mold closing side, a hot nozzle 5 is provided in the fixed mold fixing plate 2, and the hot nozzle 5 is connected with the first sub-cavity through the fixed mold plate 1; the first movable mold assembly and the second movable mold assembly include a movable mold plate 3, the movable mold plate 3 is provided with a second sub-cavity and a movable mold insert 4 on the mold closing side, and the movable mold insert 4 is provided with a third sub-cavity on the side facing the fixed mold plate 1; when the mold is closed, the first sub-cavity, the second sub-cavity, and the third sub-cavity are spliced ​​to form a first color cavity or a second color cavity, and the hot nozzle 5 can inject the first color glue into the first color cavity or inject the second color glue into the second color cavity.

[0042] The fixed mold plate 1, the movable mold plate 3 and the movable mold insert 4 are provided with a mold-closing surface on the mold-closing side. When closing the mold, the mold-closing surface of the fixed mold plate 1 fits with the mold-closing surface of the movable mold plate 3 and the mold-closing surface of the movable mold insert 4.

[0043] In order to be able to simultaneously perform double-sided second color glue injection on the first color product, a core is arranged in the first color cavity, and the core is pulled out to form a penetrating glue injection channel on the first color product, through which the second color glue can flow from the front side of the first color product to the back side of the first color product, thereby achieving simultaneous double-sided second color glue injection; wherein the front side of the first color product is the product side close to the fixed template 1, and the back side of the first color product is the product side away from the fixed template 1.

[0044] The movable mold plate 3 is provided with a movable mold insert accommodating groove 21 on the mold surface. The movable mold insert accommodating groove 21 has an annular groove side wall and a groove bottom wall opposite to the groove opening. The movable mold insert 4 is inserted into the movable mold insert accommodating groove 21 through the groove opening of the movable mold insert accommodating groove 21 and fixed on the groove bottom wall of the movable mold insert accommodating groove 21; a core pulling channel is formed between the movable mold insert 4 and the movable mold insert accommodating groove 21, and a movable core pulling component is arranged in the core pulling channel, and the core pulling component is connected to the core.

[0045] After the first color product is formed, the core is pulled out by driving the core pulling part to move in the core pulling channel away from the fixed template 1, so that the first color product forms a glue injection channel at the core pulling position, and the second color glue can flow from the front side of the first color product to the back side of the first color product through the glue injection channel to form the second color product; during the pouring of the second color glue, there is no need to respectively set up glue injection structures for injecting glue to the front and back sides of the first color product on the mold, and the second color glue can be injected on both sides of the first color product at the same time, so as to realize the one-piece molding of the second color product, avoid the joint marks caused by injection of glue in batches, improve product quality, and do not need to turn over the first color product during the injection process, so as to improve production efficiency, simplify the overall structure of the mold, and effectively reduce production costs.

[0046] Specifically, the movable template 3 is a rectangular plate structure, the movable mold insert receiving groove 21 on the movable template 3 is a rectangular groove body, and the movable mold insert receiving groove 21 is provided with an annular boss 6 on the groove bottom wall, and the outer peripheral wall of the annular boss 6 and the groove bottom wall of the movable mold insert receiving groove 21 form a first sub-stroke groove with an L-shaped cross-section; the core pulling part is a spring plate 7, and the spring plate 7 is a rectangular annular plate structure, and the spring plate 7 has an annular side wall, and the inner side of the annular side wall of the spring plate 7 is provided with an annular flange 7a, and the thickness of the spring plate 7 The first opening and the second opening are formed on both sides of the movable mold insert 4 in the degree direction respectively; the spring plate 7 is movably installed in the movable mold insert accommodating groove 21 on the movable mold plate 3, and the annular boss 6 in the movable mold insert accommodating groove 21 cooperates with the inner circle of the annular flange 7a of the spring plate 7, the first opening of the spring plate 7 is close to the fixed mold plate 1, and the second opening of the spring plate 7 is far away from the fixed mold plate 1; the movable mold insert 4 is provided with a plurality of movable mold inserts 4, and the plurality of movable mold inserts 4 cooperate with the annular flange 7a of the spring plate 7 through the first opening on the spring plate 7 and along The annular flanges 7a of the spring plate 7 are spliced ​​together to form an annular movable mold panel, and a core pulling channel is formed between the spliced ​​movable mold insert 4 and the groove side wall of the movable mold insert accommodating groove 21. The side of the movable mold insert 4 away from the fixed mold plate 1 is attached to the bottom wall of the movable mold insert accommodating groove 21 on the movable mold plate 3 through the second opening of the spring plate 7 and fixed by bolts; the movable mold insert 4 is provided with a second sub-stroke groove with an inverted L-shaped cross-section at the position where it cooperates with the annular flange 7a of the spring plate 7, and the first sub-stroke groove and the second sub-stroke groove are spliced ​​to form a stroke chamber, and the annular flange 7a of the spring plate 7 can move in the stroke chamber along the opening and closing direction of the mold to limit the moving stroke of the spring plate 7; the spring plate 7 is provided with an extension part 7b on the side close to the fixed mold plate 1, and the extension part 7b is extended by the annular side wall of the spring plate 7 and serves as a core. The spring plate 7 is driven by the driving mechanism to drive the annular flange 7a of the spring plate 7 to move from the first position to the second position in the stroke chamber, and correspondingly drives the core to move to complete the core pulling.

[0047] It should be noted that the first position in the stroke chamber is the second sub-stroke groove of the movable mold insert 4 parallel to the groove wall of the fixed mold plate 1, and the second position in the stroke chamber is the bottom wall of the movable mold insert accommodating groove 21 on the movable mold plate 3. The first position is closer to the fixed mold plate 1 than the second position; when the annular flange 7a of the spring plate 7 is located in the first position in the stroke chamber, the core extends out of the core pulling channel into the first color cavity and connects with the mating surface of the fixed mold plate 1; when the annular flange 7a of the spring plate 7 is located in the second position in the stroke chamber, the core is separated from the mating surface of the fixed mold plate 1 and retreats into the core pulling channel.

[0048] Since the core is an extension portion 7b formed by extending the annular side wall of the spring plate 7, the extension length of the extension portion 7b on the spring plate 7 should correspond to the thickness of the first color product to avoid the core extending out more than the thickness of the first color cavity, which causes the fixed mold plate 1 and the movable mold plate 3 to be unable to fit together, or to avoid the core extending out less than the thickness of the first color cavity, which causes the failure to form a penetrating injection channel on the first color product.

[0049] A plurality of reinforcing beams 7c are provided between the annular flanges 7a on both sides of the spring plate 7 in the width direction. The reinforcing beams 7c are arranged at intervals along the length direction of the spring plate 7 and divide the inner circle space of the annular flange 7a into a plurality of matching cavities. The reinforcing beams 7c can improve the rigidity of the spring plate 7 and avoid bending deformation. At the same time, the movable mold insert 4 is provided with an engaging groove on the side away from the fixed mold plate 1. The engaging groove of the movable mold insert 4 cooperates with the reinforcing beams 7c on the spring plate 7 to limit the movable mold insert 4 from moving along the length direction of the movable mold plate 3. A plurality of limiting bosses 8 are arranged on the bottom wall of the insert receiving groove 21, and the limiting bosses 8 are located in the middle of the movable template 3 and are arranged at intervals along the length direction of the movable template 3. When the spring plate 7 is installed in the movable mold insert receiving groove 21 of the movable template 3, the limiting bosses 8 correspond one-to-one with the matching cavities in the annular flange 7a, and abut against and position the movable mold insert 4 on the spring plate 7 to limit the movement of the movable mold insert 4 along the width direction of the movable template 3; thereby, the movable mold insert 4 can be quickly positioned and installed on the movable template 3 to improve the overall assembly efficiency of the mold.

[0050] The movable template 3 is provided with a driving mechanism mounting groove 22 for accommodating the driving mechanism on the plate surface away from the side of the fixed template 1, and the driving mechanism mounting groove 22 has an annular groove side wall and a groove bottom wall opposite to the groove; a through groove connected to the movable mold insert accommodating groove 21 is opened on the groove bottom wall of the driving mechanism mounting groove 22, and the driving mechanism can abut the spring plate 7 in the movable mold insert accommodating groove 21 located inside the movable template 3 through the through groove in the driving mechanism mounting groove 22; when the driving mechanism abuts the spring plate 7, the annular flange 7a of the spring plate 7 is located in the first position in the stroke chamber, the core extends out of the core pulling channel into the first color cavity, and is connected with the mating surface of the fixed template 1; when the driving mechanism is separated from the spring plate 7, the annular flange 7a of the spring plate 7 is located in the second position in the stroke chamber, the core is separated from the mating surface of the fixed template 1, and is retreated into the core pulling channel.

[0051] The movable mold assembly also includes a movable mold pad 9, which is arranged on the side of the movable mold plate 3 away from the fixed mold plate 1 and closes the notch of the drive mechanism mounting groove 22 on the movable mold plate 3; during assembly, the drive mechanism is installed on the pad of the movable mold plate 3 and inserted into the drive mechanism mounting groove 22; the notch of the drive mechanism mounting groove 22 is closed by the movable mold pad 9, which effectively prevents external dust from entering the drive mechanism mounting groove 22, thereby ensuring the normal operation of the drive mechanism.

[0052] In order to ensure the driving effect on the spring plate 7, a plurality of driving mechanisms are provided in the present embodiment, and the driving mechanisms are arranged at intervals along the annular side wall of the spring plate 7. The movable template 3 is correspondingly provided with a plurality of driving mechanism mounting grooves 22 on the plate surface on the side away from the fixed template 1 to form a plurality of force points on the spring plate 7 to ensure sufficient driving force, so that the spring plate 7 is evenly stressed, and the spring plate 7 is prevented from being unable to move toward the fixed template 1 due to insufficient driving force of a single driving mechanism, and from being bent and deformed due to local stress on the spring plate 7.

[0053] The driving mechanism includes a seesaw 10 and a pair of supporting blocks 11, which are fixedly mounted on the movable mold pad 9 and arranged in an opposing manner on both sides of the width direction of the seesaw 10; the seesaw 10 is provided with rotating shafts on both sides of the width direction, and the supporting blocks 11 are provided with axial holes. The rotating shafts on the seesaw 10 and the axial holes on the supporting blocks 11 can be rotatably matched, so that the seesaw 10 can be rotatably mounted on the movable mold pad 9, and a gap is formed between the seesaw 10 and the movable mold pad 9 for the seesaw 10 to swing; one end of the seesaw 10 in the length direction is a first swing end, and the other end of the seesaw 10 in the length direction is a second swing end, and the first swing end of the seesaw 10 abuts against the side of the spring plate 7 away from the fixed mold plate 1.

[0054] When the first color product is formed, pressure is applied to the second swinging end of the seesaw 10 through the force-applying member. According to the lever principle, the second swinging end of the seesaw 10 swings around the rotating axis close to the movable mold pad 9, which correspondingly drives the first swinging end of the seesaw 10 to swing around the rotating axis away from the movable mold pad 9, and pushes the seesaw 10 to move toward the fixed mold plate 1, so that the core enters the first color cavity; when the second color product is formed, pressure is applied to the annular flange 7a of the spring plate 7 through the force-applying member, and the spring plate 7 moves away from the fixed mold plate 1, pushing the first swinging end of the seesaw 10 to swing around the rotating axis close to the movable mold pad 9, and correspondingly drives the second swinging end of the seesaw 10 to swing around the rotating axis away from the movable mold pad 9, so that the core is withdrawn into the core pulling channel to complete the core pulling.

[0055] It should be noted that the depth of the movable mold insert accommodating groove 21 on the movable mold plate 3 should be greater than the depth of the driving mechanism mounting groove 22, so that when the annular flange 7a of the spring plate 7 is located in the second position in the stroke chamber, the first swing end of the rocker 10 in the driving mechanism mounting groove 22 can abut against the side of the spring plate 7 away from the fixed mold plate 1, and the spring plate 7 always has a tendency to move toward the fixed mold plate 1.

[0056] The force-applying member includes a first pressure column 12 and a second pressure column 13; the first pressure column 12 is arranged on the first fixed mold plate 1, and when the mold is closed, the first pressure column 12 can extend into the drive mechanism mounting groove 22 inside the movable mold plate 3 to press the second swinging end of the rocker plate 10; the second pressure column 13 is arranged on the second fixed mold plate 1, and when the mold is closed, the second pressure column 13 can pass through the movable mold insert 4 and extend into the stroke chamber to press the annular flange 7a of the spring plate 7.

[0057] Specifically, the first pressure column 12 is a rectangular column structure, one end of the first pressure column 12 is connected to the mold surface of the first fixed mold plate 1, and the other end of the first pressure column 12 is a force-applying end and extends axially toward the movable mold plate 3; the mold surface of the movable mold plate 3 is provided with a first pressure column 12 hole connected to the drive mechanism mounting groove 22, and the force-applying end of the first pressure column 12 can enter the drive mechanism mounting groove 22 through the first pressure column 12 hole during mold closing to press the second swinging end of the rocker plate 10, so that the core extends out of the core pulling channel and enters the first color cavity.

[0058] The second pressure column 13 is a cylindrical structure, one end of which is connected to the mold surface of the second fixed mold plate 1, and the other end of the second pressure column 13 is a force-applying end and extends axially toward the movable mold plate 3; a second pressure column hole connected to the stroke chamber is provided on the mold surface of the movable mold insert 4, and the force-applying end of the second pressure column 13 can enter the stroke chamber through the second pressure column hole during mold closing to press the annular flange 7a of the spring plate 7, so that the core is retracted into the core-pulling channel to complete the core pulling.

[0059] It should be noted that in this embodiment, the first pressure column 12 is a rectangular column structure, and the second pressure column 13 is a cylindrical structure. Depending on the actual situation, the first pressure column 12 can be a cylindrical structure, the second pressure column 13 can be a rectangular column structure, or both pressure columns can be rectangular column structures or cylindrical structures.

[0060] In order to ensure the force effect on the annular flange 7a of the spring plate 7, a plurality of second pressure columns 13 are provided in the present embodiment. The second pressure columns 13 pass through the movable mold insert 4 and extend into the stroke chamber to press the annular flange 7a of the spring plate 7. A second pressure column hole connected to the stroke chamber is provided on the mating surface of each movable mold insert 4 to form a plurality of force application points on the annular flange 7a of the spring plate 7, so that the annular flange 7a of the spring plate 7 is evenly stressed, thereby avoiding the failure of a single second pressure column 13 to drive the spring plate 7 to move away from the fixed mold plate 1 and avoiding the bending deformation caused by local stress on the annular flange 7a of the spring plate 7.

[0061] In this embodiment, the two fixed mold assemblies also include a hot runner plate 14, which is arranged between the fixed mold plate 1 and the fixed mold fixing plate 2. The hot runner plate 14 can be used to inject glue into the sub-cavity on the fixed mold plate 1; for the convenience of description, the hot runner plate 14 in the first fixed mold assembly is named the first hot runner plate, and the hot runner plate 14 in the second fixed mold assembly is named the second hot runner plate.

[0062] The first fixed mold plate 1 is connected to the first hot runner plate, on which a first installation chamber is arranged, and in which a first hot runner system is installed. The first hot runner system is controlled by a needle valve, and is used to control the connection and disconnection between the first hot nozzle 5 and the first color cavity to realize the pouring of the first color product.

[0063] The second fixed mold plate 1 is connected to the second hot runner plate 14, and a second installation chamber is provided on the second hot runner plate 14. A second hot runner plate system is installed in the second installation chamber. The second hot runner plate system is controlled by a needle valve. The second hot runner plate system is used to control the connection and disconnection between the second hot nozzle 5 and the second color cavity to realize the pouring of the second color product.

[0064] In this embodiment, the transposition mechanism includes a rotatable electric turntable 15, on which a connecting plate 16 is arranged, the connecting plate 16 is perpendicular to the table surface of the electric turntable 15, one of the plate surfaces of the connecting plate 16 is connected to the first movable mold assembly, and the other plate surface of the connecting plate 16 is connected to the second movable mold assembly; when the electric turntable 15 is started, the electric turntable 15 drives the connecting plate 16 to rotate, so as to swap the positions of the first movable mold assembly and the second movable mold assembly, so as to transfer the first color product on the movable mold assembly from the first color cavity to the second color product in the second color cavity.

[0065] Embodiment 2

[0066] See also Fig.11 and Fig.12 , compared with the first embodiment, the difference between the second embodiment and the first embodiment is that the driving mechanism in the present embodiment includes a top plate 17, the top plate 17 is mounted on the movable die pad 9 through a spring 18 and a guide rod 19 and is located in the driving mechanism mounting groove 22 inside the movable die plate 3; the top plate 17 is a rectangular plate structure, and a first guide rod hole 17a and a second guide rod hole 17b that are interconnected are provided on the top plate 17, the first guide rod hole 17a is located on the side of the movable die pad 9 close to the fixed die plate 1, and the second guide rod hole 17b is located on the movable die pad 9. On the side of the mold pad 9 away from the fixed mold plate 1, the diameter of the first guide rod hole 17a is greater than the diameter of the second guide rod hole 17b; one end of the guide rod 19 passes through the first guide rod hole 17a and the second guide rod hole 17b in sequence and is connected to the movable mold pad 9, and the other end of the guide rod 19 is provided with a stop cap 19a and is located in the first guide rod hole 17a; the spring 18 is sleeved on the guide rod, one end of the spring 18 is connected to the top plate 17, and the other end of the spring 18 is connected to the movable mold pad 9, and the spring 18 is a compression spring 18.

[0067] When the first color product is being formed, a thrust is applied to the top plate 17 through the spring 18, and the top plate 17 can move in the driving mechanism mounting groove 22 inside the movable template 3 toward the fixed template 1, and one end of the top plate 17 abuts against the side of the spring plate 7 away from the fixed template 1, driving the spring plate 7 to move toward the fixed template 1, so that the core enters the first color cavity; when the second color product is being formed, pressure is applied to the annular flange 7a of the spring plate 7 through the force-applying member, and the spring plate 7 moves away from the fixed template 1, driving the top plate 17 to move away from the fixed template 1, so that the core is withdrawn into the core pulling channel to complete the core pulling.

[0068] In this embodiment, the force-applying member is the second pressure column 13 in the first embodiment. The second pressure column 13 is arranged on the second fixed mold plate 1. When the mold is closed, the second pressure column 13 can pass through the movable mold insert 4 and extend into the stroke chamber to press the annular flange 7a of the spring plate 7; the second pressure column 13 is a cylindrical structure, one end of the second pressure column 13 is connected to the mold surface of the second fixed mold plate 1, and the other end of the second pressure column 13 is the force-applying end and extends axially toward the movable mold plate 3; a second pressure column hole connected to the stroke chamber is provided on the mold surface of the movable mold insert 4, and the force-applying end of the second pressure column 13 can enter the stroke chamber through the second pressure column hole when the mold is closed to press the annular flange 7a of the spring plate 7, so that the core is retracted into the core pulling channel to complete the core pulling.

[0069] In the present embodiment, there is no need to set the first pressure column 12 on the first fixed template 1. The spring 18 drives the top plate 17 to push the spring plate 7 toward the fixed template 1. The core can be restored to the first color cavity before the first color mold is closed. This not only simplifies the mold structure, but also in the process of restoring the core position, the core can push out the dirt located at the core pulling channel opening in the open mold state, so as to avoid dirt mixing in when the first color mold is closed, thereby improving product quality.

[0070] Embodiment 3

[0071] See also Fig.13 Compared with the first embodiment, the third embodiment is different in that the spring plate 7 is arranged on the fixed mold assembly in the present embodiment; specifically, the first movable mold assembly and the second movable mold fixed assembly include a movable mold plate 3, and the movable mold plate 3 is provided with a first sub-cavity on the mold closing side; the first fixed mold assembly and the second fixed mold assembly include a fixed mold plate 1, and the fixed mold plate 1 is provided with a second sub-cavity and a fixed mold insert 20 on the mold closing side, and the fixed mold insert 20 is provided with a third sub-cavity on the side facing the movable mold plate 3; a hot nozzle 5 is provided in the fixed mold fixed plate 2, and the hot nozzle 5 is connected with the second sub-cavity; when the mold is closed, the first sub-cavity, the second sub-cavity, and the third sub-cavity are spliced ​​to form a first color cavity or a second color cavity, and the hot nozzle 5 can inject the first color glue into the first color cavity or inject the second color glue into the second color cavity.

[0072] The fixed mold plate 1, the fixed mold insert 20 and the movable mold plate 3 are provided with a mold clamping surface on the mold clamping side. When the mold is clamped, the mold clamping surface of the fixed mold plate 1 and the mold clamping surface of the fixed mold insert 20 and the mold clamping surface of the movable mold plate 3 are mutually attached.

[0073] The fixed mold plate 1 is provided with a fixed mold insert accommodating groove on the mold surface. The fixed mold insert accommodating groove has an annular groove side wall and a groove bottom wall opposite to the groove opening. The fixed mold insert 20 is inserted into the fixed mold insert accommodating groove through the groove opening of the fixed mold insert accommodating groove and fixed on the groove bottom wall of the fixed mold insert accommodating groove; a core pulling channel is formed between the fixed mold insert 20 and the fixed mold insert accommodating groove, and a movable core pulling component is arranged in the core pulling channel, and the core pulling component is connected to the core.

[0074] After the first color product is formed, the core is pulled out by driving the core pulling part to move in the core pulling channel away from the movable template 3, so that a glue injection channel is formed at the core pulling position of the first color product. The second color glue can flow from the front side of the first color product to the back side of the first color product through the glue injection channel to form a second color product.

[0075] The fixed die insert receiving groove on the fixed die plate 1 is a rectangular groove body, and an annular boss 6 is provided on the bottom wall of the groove of the fixed die insert receiving groove, and the outer peripheral wall of the annular boss 6 and the bottom wall of the groove of the fixed die insert receiving groove form a first sub-stroke groove with an L-shaped cross-section; the core pulling part is a spring plate 7, and the spring plate 7 is a rectangular annular plate structure, and the spring plate 7 has an annular side wall, and an annular flange 7a is provided on the inner side of the annular side wall of the spring plate 7, and a first opening and a second opening are formed on both sides of the thickness direction of the spring plate 7 respectively; the spring plate 7 is movably installed in the fixed die insert receiving groove on the fixed die plate 1, and the annular boss 6 in the fixed die insert receiving groove cooperates with the inner circle of the annular flange 7a of the spring plate 7, the first opening of the spring plate 7 is close to the movable die plate 3, and the second opening of the spring plate 7 is far away from the movable die plate 3; a plurality of fixed die inserts 20 are provided, and the plurality of fixed die inserts 20 cooperate with the annular flange 7a of the spring plate 7 through the first opening on the spring plate 7 and are mutually engaged along the annular flange 7a of the spring plate 7 The fixed mold insert 20 is spliced ​​to form an annular fixed mold panel, and a core pulling channel is formed between the spliced ​​fixed mold insert 20 and the groove side wall of the fixed mold insert accommodating groove. The side of the fixed mold insert 20 away from the movable mold plate 3 is attached to the bottom wall of the fixed mold insert accommodating groove on the fixed mold plate 1 through the second opening of the spring plate 7 and fixed by bolts; the fixed mold insert 20 is provided with a second sub-stroke groove with an inverted L-shaped cross-section at the position where it cooperates with the annular flange 7a of the spring plate 7, and the first sub-stroke groove and the second sub-stroke groove are spliced ​​to form a stroke chamber, and the annular flange 7a of the spring plate 7 can move in the stroke chamber along the opening and closing direction of the mold to limit the moving stroke of the spring plate 7; the spring plate 7 is provided with an extension part 7b on the side close to the movable mold plate 3, and the extension part 7b is extended by the annular side wall of the spring plate 7 and serves as a core. The spring plate 7 is driven by the driving mechanism to drive the annular flange 7a of the spring plate 7 to move from the first position to the second position in the stroke chamber, and correspondingly drives the core to move to complete the core pulling.

[0076] It should be noted that the first position in the stroke chamber is the second sub-stroke groove of the fixed mold insert 20 parallel to the groove wall of the movable mold plate 3, and the second position in the stroke chamber is the bottom wall of the fixed mold insert accommodating groove on the fixed mold plate 1. The first position is closer to the movable mold plate 3 than the second position; when the annular flange 7a of the spring plate 7 is located in the first position in the stroke chamber, the core extends out of the core pulling channel into the first color cavity and connects with the mating surface of the movable mold plate 3; when the annular flange 7a of the spring plate 7 is located in the second position in the stroke chamber, the core is separated from the mating surface of the movable mold plate 3 and retreats into the core pulling channel.

[0077] A plurality of reinforcing beams 7c are provided between the annular flanges 7a on both sides of the spring plate 7 in the width direction. The reinforcing beams 7c are arranged at intervals along the length direction of the spring plate 7 and divide the inner circle space of the annular flange 7a into a plurality of matching cavities. The reinforcing beams 7c can improve the rigidity of the spring plate 7 and avoid bending deformation. At the same time, the fixed mold insert 20 is provided with an engaging groove on the side away from the movable mold plate 3. The engaging groove of the fixed mold insert 20 cooperates with the reinforcing beams 7c on the spring plate 7 to limit the movement of the fixed mold insert 20 along the length direction of the fixed mold plate 1. A plurality of limiting bosses 8 are arranged on the bottom wall of the fixed die insert accommodating groove, and the limiting bosses 8 are located in the middle of the fixed die plate 1 and are arranged at intervals along the length direction of the fixed die plate 1. When the spring plate 7 is installed in the fixed die insert accommodating groove of the fixed die plate 1, the limiting bosses 8 correspond to the matching cavities in the annular flange 7a one by one, and abut against and position the movable die insert 4 on the spring plate 7 to limit the movement of the fixed die insert 20 along the width direction of the fixed die plate 1; thereby, the fixed die insert 20 can be quickly positioned and installed on the fixed die plate 1 to improve the overall assembly efficiency of the mold.

[0078] The fixed template 1 is provided with a driving mechanism installation groove 22 for accommodating the driving mechanism on the plate surface on the side away from the movable template 3, and the driving mechanism installation groove 22 has an annular groove side wall and a groove bottom wall opposite to the groove; a through groove connected to the fixed mold insert accommodating groove is opened on the groove bottom wall of the driving mechanism installation groove 22, and the driving mechanism can abut against the spring plate 7 in the fixed mold insert accommodating groove located inside the fixed template 1 through the through groove in the driving mechanism installation groove 22; when the driving mechanism abuts against the spring plate 7, the annular flange 7a of the spring plate 7 is located in the first position in the stroke chamber, the core extends out of the core pulling channel into the first color cavity, and is connected with the mating surface of the movable template 3; when the driving mechanism is separated from the spring plate 7, the annular flange 7a of the spring plate 7 is located in the second position in the stroke chamber, the core is separated from the mating surface of the movable template 3, and is retreated into the core pulling channel.

[0079] The fixed mold assembly also includes a fixed mold pad 23, which is arranged on the side of the fixed mold plate 1 away from the movable mold plate 3 and closes the notch of the drive mechanism mounting groove 22 on the fixed mold plate 1; during assembly, the drive mechanism is installed on the pad of the fixed mold plate 1 and placed in the drive mechanism mounting groove 22; the notch of the drive mechanism mounting groove 22 is closed by the fixed mold pad 23, which effectively prevents external dust from entering the drive mechanism mounting groove 22, thereby ensuring the normal operation of the drive mechanism.

[0080] In order to ensure the driving effect on the spring plate 7, a plurality of driving mechanisms are provided in the present embodiment. The driving mechanisms are arranged at intervals along the annular side wall of the spring plate 7. The fixed template 1 is correspondingly provided with a plurality of driving mechanism mounting grooves 22 on the plate surface on the side away from the movable template 3 to form a plurality of force points on the spring plate 7 to ensure sufficient driving force, so that the spring plate 7 is evenly stressed, to avoid the inability to drive the spring plate 7 to move toward the movable template 3 due to insufficient driving force of a single driving mechanism, and to avoid bending deformation of the spring plate 7 due to local stress.

[0081] The driving mechanism includes a top plate 17, which is installed on the fixed die pad 23 through a spring 18 and a guide rod 19 and is located in the driving mechanism installation groove 22 inside the fixed die plate 1; the top plate 17 is a rectangular plate structure, and a first guide rod hole 17a and a second guide rod hole 17b that are interconnected are provided on the top plate 17, the first guide rod hole 17a is located on the side of the movable die pad 9 close to the fixed die plate 1, and the second guide rod hole 17b is located on the side of the fixed die pad 23 away from the movable die plate 3, and the diameter of the first guide rod hole 17a is greater than the diameter of the second guide rod hole 17b; one end of the guide rod 19 passes through the first guide rod hole 17a and the second guide rod hole 17b in sequence and is connected to the fixed die pad 23, and the other end of the guide rod 19 is provided with a stop cap 19a and is located in the first guide rod hole 17a; the spring 18 is sleeved on the guide rod, one end of the spring 18 is connected to the top plate 17, and the other end of the spring 18 is connected to the fixed die pad 23, and the spring 18 is a compression spring 18.

[0082] When the first color product is being formed, a thrust is applied to the top plate 17 through the spring 18, and the top plate 17 can move in the driving mechanism mounting groove 22 inside the fixed mold plate 1 toward the movable mold plate 3, and one end of the top plate 17 abuts against the side of the spring plate 7 away from the movable mold plate 3, driving the spring plate 7 to move toward the movable mold plate 3, so that the core enters the first color mold cavity; when the second color product is being formed, pressure is applied to the annular flange 7a of the spring plate 7 through the force-applying member, and the spring plate 7 moves away from the movable mold plate 3, driving the top plate 17 to move away from the movable mold plate 3, so that the core is withdrawn into the core pulling channel to complete the core pulling.

[0083] In this embodiment, the force-applying member is a push column 24 arranged on the movable mold plate 3. When the mold is closed, the push column 24 can pass through the fixed mold insert 20 and extend into the stroke chamber to press the annular flange 7a of the spring plate 7; the push column 24 is a cylindrical structure, one end of the push column 24 is connected to the mold closing surface of the second movable mold plate 3, and the other end of the push column 24 is the force-applying end and extends axially toward the fixed mold plate 1; a push column hole connected to the stroke chamber is arranged on the mold closing surface of the fixed mold insert 20, and the force-applying end of the push column 24 can enter the stroke chamber through the push column hole when the mold is closed to press the annular flange 7a of the spring plate 7, so that the core is retracted into the core pulling channel to complete the core pulling.

[0084] In order to ensure the force effect on the annular flange 7a of the spring plate 7, a plurality of push columns 24 are provided in the present embodiment. The push columns 24 pass through the fixed mold insert 20 one by one and extend into the stroke chamber to press the annular flange 7a of the spring plate 7. A push column hole connected to the stroke chamber is provided on the mating surface of each fixed mold insert 20 to form a plurality of force application points on the annular flange 7a of the spring plate 7, so that the annular flange 7a of the spring plate 7 is evenly stressed, thereby preventing the spring plate 7 from being unable to move away from the movable mold plate 3 due to insufficient force applied by a single push column 24, and preventing the annular flange 7a of the spring plate 7 from being bent and deformed due to local force.

[0085] The above-mentioned embodiments of the utility model are not intended to limit the protection scope of the utility model, and the implementation methods of the utility model are not limited to these. All other various forms of modifications, replacements or changes made to the above-mentioned structure of the utility model based on the above-mentioned contents of the utility model, in accordance with the common technical knowledge and customary means in the field, without departing from the above-mentioned basic technical ideas of the utility model, should fall within the protection scope of the utility model.

Claims

1. A through-type two-color double-sided molding die, characterized in that: It includes two fixed mold assemblies and two movable mold assemblies, and a transposition mechanism arranged between the two movable mold assemblies. The two movable mold assemblies are matched with the two fixed mold assemblies one by one after the positions are swapped by the transposition mechanism. A core that can be pulled out along the opening and closing direction of the mold is arranged in the cavity formed by the cooperation.

2. The through-type two-color double-sided molding die according to claim 1, characterized in that: A core pulling channel connected to the mold cavity is formed inside the movable mold assembly. The core pulling channel is parallel to the mold opening and closing direction. A core pulling piece connected to the mold core is movably arranged in the core pulling channel.

3. The through-type two-color double-sided molding die according to claim 2, characterized in that: The movable mold assembly includes a movable mold plate, and a movable mold insert accommodating groove for accommodating a movable mold insert is arranged on the mold surface of the movable mold plate, and a core pulling channel is formed between the movable mold insert and the movable mold insert accommodating groove; the core pulling part is a spring plate with an annular side wall, and the spring plate extends with an extension part on the side close to the fixed mold assembly, and the extension part of the spring plate serves as a core.

4. The through-type two-color double-sided molding die according to claim 3, characterized in that: The movable mold insert accommodating groove is provided with an annular boss on the bottom wall of the groove, and the outer peripheral wall of the annular boss and the bottom wall of the groove of the movable mold insert accommodating groove form a first sub-stroke groove; an annular flange is provided on the inner side of the annular side wall of the spring plate, and the annular boss in the movable mold insert accommodating groove cooperates with the inner circle of the annular flange of the spring plate, and the movable mold insert is provided with a second sub-stroke groove at the position where it cooperates with the annular flange of the spring plate, and the first sub-stroke groove and the second sub-stroke groove are spliced ​​to form a stroke chamber, and the annular flange of the spring plate can move in the stroke chamber along the opening and closing direction of the mold.

5. The through-type two-color double-sided molding die according to claim 4, characterized in that: The movable template is provided with a driving mechanism installation groove for accommodating the driving mechanism on the plate surface away from the fixed template, and a through groove connected to the movable mold insert accommodating groove is opened on the bottom wall of the driving mechanism installation groove. The driving mechanism can abut against the spring plate through the through groove in the driving mechanism installation groove.

6. The through-type two-color double-sided molding die according to claim 5, characterized in that: The movable mold assembly also includes a movable mold pad, which is arranged on the side of the movable mold plate away from the fixed mold plate and closes the driving mechanism mounting groove on the movable mold plate; the driving mechanism includes a seesaw, which is rotatably mounted on the movable mold pad through a support block, and a first swinging end of the seesaw abuts against the side of the spring plate away from the fixed mold plate.

7. The through-type two-color double-sided molding die according to claim 6, characterized in that: A first pressure column is arranged on one of the fixed mold assemblies, and a second pressure column is arranged on the other fixed mold assembly. When the first color mold is closed, the first pressure column can extend into the driving mechanism mounting groove inside the movable mold plate to press the second swinging end of the seesaw plate; when the second color mold is closed, the second pressure column can pass through the movable mold insert and extend into the stroke chamber to press the annular flange of the spring plate.

8. The through-type two-color double-sided molding die according to claim 6, characterized in that: The driving mechanism includes a top plate, which is installed on the movable mold pad through springs and guide rods and is located in the driving mechanism installation groove inside the movable mold plate; a second pressure column is arranged on the fixed mold assembly of the second color mold, and the second pressure column can pass through the movable mold insert and extend into the stroke chamber to press the annular flange of the spring plate.

9. The through-type two-color double-sided molding die according to claim 1, characterized in that: A core pulling channel connected to the mold cavity is formed inside the fixed mold assembly. The core pulling channel is parallel to the mold opening and closing direction. A core pulling piece connected to the mold core is movably arranged in the core pulling channel.

10. The through-type two-color double-sided molding die according to claim 9, characterized in that: The fixed mold assembly includes a fixed mold plate, and a fixed mold insert accommodating groove for accommodating a fixed mold insert is provided on the mold surface of the fixed mold plate, and a core pulling channel is formed between the fixed mold insert and the fixed mold insert accommodating groove; the core pulling part is a spring plate with an annular side wall, and the spring plate extends with an extension portion on the side close to the movable mold assembly, and the extension portion of the spring plate serves as a core.

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