A device for controlling a three-plate die-point gate switch

Abstract

The application discloses a device for controlling a three-plate mold-point gate switch, comprising an A mold plate, a B mold plate and a stripper plate, wherein the B mold plate is provided with a gate sleeve assembly penetrating through the stripper plate, the end face of the A mold plate opposite to the stripper plate is provided with a gate insert assembly, a flow channel group is formed in the A mold plate, the end face of the A mold plate connected with the stripper plate is inlaid with a cover plate, the end face of the cover plate close to the gate sleeve assembly is provided with a distribution channel, the cover plate is provided with a distribution channel hole penetrating through the distribution channel and connected with the distribution channel and the gate insert assembly, and the end face of the A mold plate opposite to the stripper plate is further provided with a gate switch assembly, wherein the gate switch assembly at least comprises a gate switch control plate provided with a switch hole, and the switch hole corresponds to the distribution channel hole and the gate of the gate insert assembly. Through the device, the cavity can be sealed by rotating the rotating shaft hole of the rotating shaft on the end face of the A mold plate, the operation is convenient, and the device is not affected by the operation space.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of injection mold design and manufacturing, and particularly relates to a device for controlling a three-plate mold point gate switch. BACKGROUND

[0002] In the injection molding process, the control of the point gate switch is an important link. The traditional point gate switch structure is generally set as no gate or flow channel closed type. Of course, it can also be set as the existing point gate switch structure as shown in the figure, which is rotated by using a hexagonal wrench in use. Figure 1

[0003] In the implementation of the prior art, the inventor finds that:

[0004] When the produced product appears abnormal and the cavity corresponding to the position needs to be closed, the gate of the cavity to be closed is generally blocked by a section of cold flow channel of the previous product, or the point gate switch is rotated by using a hexagonal wrench to achieve the closing. Both of the two cavity closing methods have the problems of time-consuming and laborious, and limited operation space.

[0005] Therefore, it is necessary to provide a technical scheme which is simple to operate and is not affected by the operation space to solve the problems of time-consuming and laborious, and inconvenient operation of the cavity closing method in the prior art. SUMMARY

[0006] The technical problem solved by the present application is to solve the problems of time-consuming and laborious, and inconvenient operation of the cavity closing method in the prior art.

[0007] To solve the above technical problems, one technical scheme adopted by the present application is:

[0008] The device for controlling a three-plate mold point gate switch comprises an A mold plate, a B mold plate, and a stripping plate arranged between the A mold plate and the B mold plate. A gate sleeve assembly is arranged on the B mold plate and penetrates the stripping plate. A gate insert assembly is arranged on the end surface of the A mold plate facing away from the stripping plate. A flow channel group is arranged on the A mold plate and is used for connecting the gate sleeve assembly and the gate insert assembly. A cover plate is inlaid in the end surface of the A mold plate connected with the stripping plate and is connected with the gate insert assembly. A branch flow channel is arranged on the end surface of the cover plate close to the gate sleeve assembly. The cover plate penetrates the branch flow channel hole. The branch flow channel is connected with the gate insert assembly. A gate switch assembly is arranged on the end surface of the A mold plate facing away from the stripping plate. The gate switch assembly at least comprises a gate switch control plate provided with a switch hole arranged between the branch flow channel hole and the gate insert assembly. The switch hole is corresponding to the branch flow channel hole and the gate of the gate insert assembly. The displacement of the switch hole of the gate switch control plate is controlled by the gate switch assembly to realize the opening of the gate.

[0009] ​In a preferred embodiment of the present application, the gate switch assembly comprises: a rotating shaft penetrating the A template and the cover plate; a first rocker plate and a second rocker plate sleeved on the rotating shaft; a gate switch control plate located between the first rocker plate and the second rocker plate and connected with the first rocker plate and the second rocker plate; the gate switch control plate is provided with a square through hole at the position connected with the first rocker plate and the second rocker plate, and the square through hole is provided with a square force transmission slider connected with the first rocker plate and the second rocker plate on both sides; and the end face of the rotating shaft away from the cover plate is provided with a rotating hole.

[0010] In a preferred embodiment of the present application, the cover plate is provided with a movement groove for horizontal linear movement of the gate switch control plate at least at the end face close to the A template.

[0011] In a preferred embodiment of the present application, a switch indicating needle rotating with the rotating shaft is further connected to the outer side wall of the rotating shaft away from the cover plate, and a rotating cavity for the switch indicating needle is provided on the end face of the A template corresponding to the position of the switch indicating needle, and the two ends of the rotating cavity are marked with an "on" mark or an "off" mark.

[0012] In a preferred embodiment of the present application, the gate switch assembly further comprises a wave bead screw connected with the outer side wall of the second rocker plate, the outer side wall of the second rocker plate is provided with a plurality of openings, the wave bead screw is connected from one of the plurality of openings to another one of the plurality of openings when the second rocker plate rotates with the rotating shaft, the other end of the wave bead screw is further provided with a headless screw, and the side wall of the cover plate is provided with a containing hole for containing the wave bead screw and the headless screw.

[0013] In a preferred embodiment of the present application, the two sides of the gate sleeve assembly are further provided with a pulling needle penetrating the stripping plate and located in the shunt of the cover plate.

[0014] The device for controlling the three-plate mold point gate switch provided by the present application has the following advantages: when it is necessary to close the cavity corresponding to the position, only the rotating hole of the rotating shaft corresponding to the end face of the A template needs to be rotated, the movement of the switch hole of the gate switch control plate can be realized, and then the dislocation of the switch hole, the shunt hole and the gate of the gate insert assembly can be realized to close the cavity. Moreover, the rotating shaft can be rotated according to the "on" mark or the "off" mark marked on the A template, and then the switch indicating needle points to the "on" mark or the "off" mark. In addition, when the rotating shaft is rotated, the wave bead screw is connected from one of the plurality of openings in the outer side wall of the second rocker plate to another one of the plurality of openings, and the user can also feel when the rotating shaft is rotated. Obviously, the device provided by the present application can realize the closing of the cavity only by rotating the rotating hole of the rotating shaft corresponding to the end face of the A template, and the operation is convenient and is not affected by the operation space. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1is a structural schematic diagram of a preferred embodiment of the point gate switch structure in the prior art;

[0016] Figure 2 is a structural schematic diagram of a preferred embodiment of the device for controlling the three-plate mold point gate switch provided by the present application;

[0017] Figure 3 is a structural schematic diagram of another preferred embodiment of the device for controlling the three-plate mold point gate switch provided by the present application;

[0018] Figure 4 is a sectional view structural schematic diagram of a preferred embodiment of the device for controlling the three-plate mold point gate switch according to Figure 3 A-A in the present application;

[0019] Figure 5 is a sectional view structural schematic diagram of a preferred embodiment of the device for controlling the three-plate mold point gate switch according to Figure 3 B-B in the present application;

[0020] Figure 6 is a structural schematic diagram of a preferred embodiment of the cover plate provided by the present application;

[0021] Figure 7 is a structural schematic diagram of a preferred embodiment of the gate switch assembly provided by the present application;

[0022] The labels of the components in the drawings are as follows:

[0023] A device for controlling a three-plate mold point gate switch - 100;

[0024] A mold plate - 1; a gate insert assembly - 11; a gate insert - 111; a runner group - 12; a cavity - 13; a gate switch assembly - 14; a rotating shaft - 141; a rotating hole - 1411; a first rocker piece - 142; a second rocker piece - 143; a gate switch control plate - 144; a switch hole - 1441; a latch - 145; a square force transmission slider - 146; a switch indicating needle - 147; a wave bead screw - 148; an opening - 1481; a headless screw - 149; a cover plate - 15; a runner - 151; a runner hole - 152; a receiving hole - 153;

[0025] A mold plate - 2; a gate sleeve assembly - 21; a material pulling needle - 22;

[0026] A material removing plate - 3;

[0027] A prior art point gate switch structure - 200. DETAILED DESCRIPTION

[0028] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more explicit definition of the scope of protection of the present invention.

[0029] Those skilled in the art will know that the prior art includes gateless, closed-channel, or... Figure 1 The existing point gate switch structure 200 is shown. When cavity sealing is required, the gate to be sealed is blocked by a section of the cold runner of the previous product, or the runner is closed by rotating the point gate switch structure with a hex wrench. It should be noted that this process requires mold opening, which limits the operating space and is time-consuming and labor-intensive. In addition, after rotating the point gate switch, there is still some injection plastic flowing into the rotating hole 1411 of the point gate switch, resulting in a thick plastic wall formed at the position of the rotating hole 1411 during demolding, which is in a soft and sticky state and cannot be demolded. Based on the above problems, this application provides a simple device for controlling the point gate switch of a three-plate mold that can seal cavities without opening the mold.

[0030] like Figures 2-3 The image shows a device 100 for controlling the gate switch of a three-plate mold, as provided in this application. It includes an A-plate 1, a B-plate 2, and a stripper plate 3 disposed between the A-plate 1 and B-plate 2. A gate sleeve assembly 21, penetrating the stripper plate 3, is mounted on the B-plate 2. A gate insert assembly 11 is provided on the end face of the A-plate 1 facing away from the stripper plate 3. A runner assembly 12 is provided on the A-plate 1 for connecting the gate sleeve assembly 21 and the gate insert assembly 11. A cover plate 15, which connects to the gate insert assembly 11, is embedded in the end face of the A-plate 1 that contacts the stripper plate 3. A section is provided on the end face of the cover plate 15 near the gate sleeve assembly 21. There is a runner 151, and a cover plate 15 is provided with a runner hole 152 through it. The runner 151 is connected to the gate insert assembly 11. A gate switch assembly 14 is also provided on the end face of the template 1 facing away from the stripper plate 3. The gate switch assembly 14 includes at least a gate switch control plate 144 with a switch hole 1441 provided between the runner hole 152 and the gate insert assembly 11. The switch hole 1441 corresponds to the gate of the runner hole 152 and the gate insert assembly 11. It is used to control the displacement of the switch hole 1441 of the gate switch control plate 144 through the gate switch assembly 14 to open the gate.

[0031] Specifically, for the skilled in the art, the three-plate mold includes an A mold plate 1, a B mold plate 2, and a stripper plate 3 arranged between the A mold plate 1 and the B mold plate 2, the B mold plate 2 is provided with a sprue bushing assembly 21 penetrating the stripper plate 3, the A mold plate 1 is provided with a sprue insert assembly 11 on the end surface opposite to the stripper plate 3, and the A mold plate 1 is provided with a runner group 12 for connecting the sprue bushing assembly 21 and the sprue insert assembly 11. The A mold plate 1 is a movable mold plate, and the B mold plate 2 is a fixed mold plate. On this basis, the application provides a preferred embodiment, the sprue insert assembly 11 is composed of two sprue inserts 111 corresponding to the two sides of the position of the B mold plate 2 sprue bushing assembly 21. The runner group 12 is used for flowing to the two sprue inserts 111 through the runner respectively.

[0032] On the basis described above, the cover plate 15 is provided with a distribution runner 151 close to the end surface of the sprue bushing assembly 21, and the distribution runner 151 and the sprue insert 111 are connected through the distribution runner hole 152 provided on the cover plate 15. It can also be understood that the distribution runner 151 and the runner hole on the cover plate 15 can be understood as the runner in the runner group 12 provided on the A mold plate 1.

[0033] Further, the sprue switch assembly 14 includes a rotating shaft 141 penetrating the joint of the A mold plate 1 and the cover plate 15, a first rocker plate 142 and a second rocker plate 143 sleeved on the rotating shaft 141, a sprue switch control plate 144 located between the first rocker plate 142 and the second rocker plate 143 and connected with the pin 145 of the first rocker plate 142 and the second rocker plate 143, the sprue switch control plate 144 is provided with a square through hole at the position connected with the pin 145 of the first rocker plate 142 and the second rocker plate 143, and a square force transmission slider 146 is arranged in the square through hole and connected with the pin 145 of the first rocker plate 142 and the second rocker plate 143 on both sides. Wherein, the end surface of the rotating shaft 141 away from the cover plate 15 is provided with a rotating hole 1411.

[0034] Specifically, the sprue switch assembly 14 is mainly used for controlling the opening and closing of the sprue. In the sprue switch assembly 14 provided by the application, the rotating shaft 141 is used to drive the first rocker plate 142 and the second rocker plate 143 to rotate, the rotation of the first rocker plate 142 and the second rocker plate 143 is used to drive the pin 145 connected with the sprue switch control plate 144 to rotate, and then the force transmission slider connected with the pin 145 rotates, and the sprue switch control plate 144 is pushed by the force transmission slider to move back and forth in the horizontal linear movement groove. It should be pointed out that in a preferred embodiment provided by the application, the volume of the force transmission slider is much smaller than that of the square through hole, and when the force transmission slider rotates, the sprue switch control plate 144 is only subjected to the force of the force transmission slider moving towards the movement groove.

[0035] It can be understood that the switch hole 1441 of the gate switch control plate 144 is arranged between the runner hole 152 and the gate insert assembly 11. When the gate switch control plate 144 is forced to move linearly in the movement groove, the switch hole 1441 corresponds to or does not correspond to the runner hole 152 and the gate of the gate insert 111, thereby realizing the flow or non-flow of the injection plastic.

[0036] It should be pointed out that the cover plate 15 is also provided with an accommodating groove near the end face of the A template 1 for accommodating the first rocker plate 142 and the second rocker plate 143.

[0037] Further, the outer side wall of the shaft 141 away from the cover plate 15 is also connected with a switch indicating needle 147 rotating with the shaft 141, and the end face of the A template 1 is provided with a rotating cavity 13 for the switch indicating needle 147 at the position corresponding to the switch indicating needle 147, and the both ends of the cavity 13 are marked with "on" or "off" marks.

[0038] Specifically, in order to better observe the rotation of the shaft 141 to realize the flow or non-flow of the injection plastic, the end face of the A template 1 is provided with the rotating cavity 13 of the switch indicating needle 147, and the both ends of the cavity 13 are marked with "on" or "off" marks to indicate the flow or non-flow of the injection plastic.

[0039] Further, the gate switch assembly 14 further comprises a wave bead screw 148 connected with the outer side wall of the second rocker plate 143, the outer side wall of the second rocker plate 143 is provided with a plurality of openings 1481, and the wave bead screw 148 is connected from one of the plurality of openings 1481 to another one of the plurality of openings 1481 when the second rocker plate 143 rotates with the shaft 141; the other end of the wave bead screw 148 is also provided with a headless screw 149; and the side wall of the cover plate 15 is provided with an accommodating hole 153 for accommodating the wave bead screw 148 and the headless screw 149.

[0040] Specifically, the rotation of the rotating shaft 141 can indicate the flow or non-flow of the injection plastic, but the angle of rotation also needs to be determined. A plurality of openings 1481 are provided on the outer side wall of the second rocker, and when the rotating shaft 141 rotates, the wave bead screw 148 is clamped to the next opening 1481 to indicate that the rotating angle of the rotating shaft 141 is just right to make the injection plastic flow or not flow through the switch hole 1441. It can be understood that when the wave bead screw 148 rotates to the next opening 1481, the rotating hole 1411 of the rotating shaft will have a certain response, and then it is determined whether the rotation is in place. In a preferred embodiment provided by the present application, the plurality of openings 1481 can be two, one for the injection plastic to flow through the switch hole 1441, and the other for the injection plastic to not flow through the switch hole 1441. Of course, the plurality of openings 1481 can also be multiple, so as to realize the flow at one opening 1481 switch hole 1441, and the non-flow at the clamping to the next opening 1481.

[0041] In addition, the other end of the wave bead screw 148 is also provided with a headless screw 149 for preventing the installation position of the wave bead screw from changing.

[0042] Further, the gate sleeve assembly 21 is also provided with a pulling needle 22 penetrating the stripper plate 3 and located at the position of the shunt 151 of the cover plate 15.

[0043] Specifically, the pulling needle 22 can be located at the connecting position between the shunt 151 and the shunt hole 152, so as to better control the flow of the injection plastic.

[0044] Specifically, the following is the actual application scenario of the device for controlling the three-plate mold point gate switch provided by the present application:

[0045] In the initial state, the B mold plate 2 is installed with the gate sleeve assembly 21, the A mold plate 1 is provided with two gate inserts 111 on the end surface opposite to the stripper plate 3, the cover plate 15 is provided with two shunt holes 152 corresponding to the gate inserts 111, and the two shunt holes 152 are connected to the shunt 151. The A mold plate 1 is installed with two sets of gate switch assemblies 14, and the switch holes 1441 of the gate switch control plates 144 of the two sets of gate switch assemblies 14 are respectively arranged between the shunt holes 152 and the gate inserts 111. The switch indicating needles 147 on the rotating shafts 141 of the two sets of gate switch assemblies 14 respectively correspond to the “on” marks at both ends of the cavity 13.

[0046] When the abnormal production needs to be sealed in the injection mold, the inner hexagonal wrench is used to rotate the rotating hole 1411 of the rotating shaft 141 in the corresponding position, the rotating direction is towards the "off" mark, the first rocker piece 142 and the second rocker piece 143 are rotated, the bolt 145 connected with the gate switch control plate 144 is also rotated, the corresponding square force transmission slider 146 is rotated, the gate switch control plate 144 is forced to move linearly in the movement groove, at the same time, the wave bead screw 148 arranged on the outer side wall of the second rocker piece 143 is moved from the current gap 1481 to the next gap 1481. When it is turned to the next gap 1481, it indicates that the switch hole 1441 of the gate switch control plate 144 is not corresponding to the runner hole 152 and the gate insert 111, at the same time, the switch indicating needle 147 corresponds to the "off" mark, thereby realizing the sealing.

[0047] The above is only an embodiment of the present application, and does not limit the patent range of the present application, and any equivalent structure or equivalent process transformation using the content of the specification and the drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the present application.

Claims

1. A device for controlling the gate switch of a three-plate mold, comprising a mold plate A, a mold plate B, and a stripper plate disposed between the mold plates A and B, wherein a gate sleeve assembly penetrating the stripper plate is mounted on the mold plate B, a gate insert assembly is provided on the end face of the mold plate A opposite to the stripper plate, and a runner assembly is provided on the mold plate A for connecting the gate sleeve assembly and the gate insert assembly, characterized in that, The end surface of the A template connected with the stripper plate is embedded with a cover plate connected with the sprue insert assembly, the cover plate is provided with a distribution channel hole, and the distribution channel hole is connected with the distribution channel and the sprue insert assembly; the end surface of the A template opposite to the stripper plate is further provided with a sprue switch assembly for controlling the displacement of the switch hole of the sprue switch control plate to realize the opening of the sprue; The sprue switch assembly comprises at least a sprue switch control plate provided with a switch hole and arranged between the distribution channel hole and the sprue insert assembly, and the switch hole corresponds to the distribution channel hole and the sprue of the sprue insert assembly; The sprue switch assembly further comprises a rotating shaft penetrating the A template and connected with the cover plate, a first rocker plate and a second rocker plate sleeved on the rotating shaft, and a sprue switch control plate located between the first rocker plate and the second rocker plate and connected with the first rocker plate and the second rocker plate; the sprue switch control plate is provided with a square through hole at the position connected with the first rocker plate and the second rocker plate, and a square force transmission slider is arranged in the square through hole and connected with the first rocker plate and the second rocker plate on both sides; wherein the rotating shaft is provided with a rotating hole at the end surface away from the cover plate; The cover plate is provided with a movement groove at least at the end surface close to the A template for horizontal linear movement of the sprue switch control plate; When the sprue switch control plate is forced to move linearly in the movement groove, the switch hole corresponds to or does not correspond to the distribution channel hole and the sprue of the sprue insert assembly, thereby realizing the flow or non-flow of the injection plastic.

2. The apparatus of claim 1, wherein, A switch indicating needle rotating with the rotating shaft is further connected to the outer side wall of the rotating shaft away from the cover plate, and a rotating cavity for the switch indicating needle is formed in the end surface of the A template corresponding to the position of the switch indicating needle, and “on” marks or “off” marks are marked at both ends of the rotating cavity.

3. The apparatus of claim 1, wherein, The sprue switch assembly further comprises a wave bead screw connected with the outer side wall of the second rocker plate, and a plurality of openings are formed in the outer side wall of the second rocker plate, so that the wave bead screw is connected from one of the plurality of openings to another one of the plurality of openings when the second rocker plate rotates with the rotating shaft; The other end of the wave bead screw is further provided with a headless screw; The side wall of the cover plate is provided with an accommodation hole for accommodating the wave bead screw and the headless screw.

4. The apparatus of claim 1, wherein, The sprue sleeve assembly is further provided with a pulling needle penetrating the stripper plate and located at the distribution channel position of the cover plate.

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