A multi-directional inclined ejector structure and mold

Abstract

The present invention relates to the field of injection mold technology, and discloses a multi-directional inclined top demolding structure and a mold, including a movable mold and a fixed mold that cooperate with each other, a main core pull and a first side core pull are slidably connected to the movable mold, the sliding directions of the main core pull and the first side core pull form an angle with each other, and a first sequence control mechanism for controlling the first side core pull to be demolded before the main core pull is connected to the movable mold; a second side core pull that cooperates with the main core pull is slidably connected to the first side core pull, and a linkage mechanism for driving the second side core pull to be demolded relative to the main core pull is connected between the first side core pull and the main core pull, and under the driving action of the linkage mechanism, the second side core pull is demolded synchronously with the first side core pull. The patent of the present invention solves the problem in the prior art that when the demolding directions of the main side core pull, the first side core pull and the second side core pull inside the injection mold are different and easily interfere with each other, it is impossible to conveniently and accurately complete multiple demoldings, which affects the smooth molding of the product.

Description

Technical Field

[0001] The invention relates to the technical field of injection molds, and in particular to a multi-directional inclined top demoulding structure and a mold. Background Art

[0002] For the attached Figure 1 The automobile drawer structure shown includes a drawer body and a blind hole groove arranged at the end of the drawer body, wherein an undercut arranged in the direction of the blind hole groove is arranged on the side of the drawer body end panel away from the blind hole groove, and a square groove is arranged on the side wall of the drawer along the width direction of the drawer body.

[0003] At present, when injection molding a drawer of this type of structure, in order to conveniently mold the blind hole groove and the square groove structure, it is necessary to set a main core pull and a first side core pull along the length direction of the drawer body, the main core pull is used to cooperate with the movable mold and the fixed mold to mold the blind hole groove, and the first side core pull is used to cooperate with the movable mold and the fixed mold to mold the side structure of the drawer body and the square groove structure. However, there is also an undercut structure on the drawer body, and the setting direction of the undercut structure is in the opposite direction of the blind hole groove mold opening direction, so that the demoulding direction of the side core pull structure used for molding the undercut is opposite to the demoulding direction of the main core pull, and the demoulding of the second side core pull will be dry with the demoulding of the first side core pull. Therefore, even if the main core pull and the first side core pull can be successfully demoulded in the prior art, since the demoulding direction of the second side core pull structure is different from the demoulding direction of the main side core pull and the first side core pull, when the second side core pull demoulding structure is set, it will be dry with the demoulding of the first side core pull or the second side core pull, resulting in the inconvenient arrangement of the demoulding structure of the second side core pull, affecting the smooth molding of the product. Summary of the invention

[0004] The present invention aims to provide a multi-directional inclined top demolding structure and a mold to solve the problem in the prior art that when the demolding directions of the main side core pulling, the first side core pulling and the second side core pulling inside the injection mold are different and easily interfere with each other, multiple demolding cannot be completed conveniently and accurately, thus affecting the smooth molding of the product.

[0005] In order to solve the above problems, the present invention adopts the following technical solutions: a multi-directional inclined top demolding structure, including a movable mold and a fixed mold that cooperate with each other, the movable mold is slidably connected with a main core pull and a first side core pull, the sliding directions of the main core pull and the first side core pull form an angle with each other, and the movable mold is connected with a first sequence control mechanism for controlling the first side core pull to be demolded before the main core pull; the first side core pull is slidably connected with a second side core pull that cooperates with the main core pull, and a linkage mechanism for driving the second side core pull to demold relative to the main core pull is connected between the first side core pull and the main core pull, and under the driving action of the linkage mechanism, the second side core pull and the first side core pull are demolded synchronously.

[0006] The principle and beneficial effects of the present scheme are as follows: the movable mold and the fixed mold cooperate with each other, and the movable mold is slidably connected with a main core pull and a first side core pull whose sliding directions are at an angle to each other, the movable mold and the fixed mold are used to form a cavity for forming the drawer body, the main core pull cooperates with the movable mold and the fixed mold to form a cavity for forming the blind hole groove of the drawer, and the first side core pull cooperates with the movable mold and the fixed mold to form a drawer side including a square groove structure; the first side core pull is slidably connected with a second side core pull that cooperates with the main core pull, the second side core pull and the main core pull form a cavity for forming undercuts, and the demolding sliding direction of the second side core pull relative to the first side core pull can be opposite to the demolding direction of the main core pull, of course, the demolding sliding direction of the second side core pull relative to the first side core pull can also be at an angle to the demolding direction of the main core pull and the demolding direction of the first side core pull, that is, the demolding directions of the main core pull, the first side core pull and the second side core pull can be located in different directions in the three-dimensional space, and the specific demolding direction setting is determined according to the actual product structure.

[0007] In the present application, a first sequential control mechanism is provided on the movable mold. By utilizing the sequential control action of the first sequential control mechanism, during demolding, the demolding action of the first side core pull precedes that of the main core pull. After the first side core pull completes the demolding action, the main core pull starts to demold. In addition, the present application provides a linkage mechanism on the main core pull and the first side core pull. When the first side core pull is demolded before the main core pull under the driving action of the first sequential control mechanism, the first side core pull will also slide relative to the main core pull during the sliding process along the movable mold. At this time, the linkage mechanism between the main core pull and the first side core pull acts on the second side core pull, so that the second side core pull and the first side core pull complete the demolding process synchronously. When the first side core pull and the second side core pull complete the demolding, the first sequential control mechanism finally drives the main core pull to demold, and the entire demolding process is carried out accurately and orderly.

[0008] In addition, in the present application, the main core pull and the first side core pull form an angle with each other when they slide relative to the movable mold, that is, the demolding directions of the main core pull and the first side core pull are different, and under the driving action of the linkage mechanism, the second side core pull and the first side core pull complete the side synchronously. For the demolding direction of the second side core pull, the structure of the linkage mechanism can be used to reasonably control the sliding direction of the second side core pull, so that the main core pull, the first side core pull and the second side core pull can be demolded in different directions. The mold structure is simple and can accurately complete multi-directional inclined top demolding, thereby successfully forming the blind hole groove, side structure and square hole, and inverted structure on the drawer product.

[0009] Preferably, as an improvement, the linkage mechanism includes a driving unit and a holding unit, and when the first side core pulling is demolded before the main side core pulling, the holding unit is used to control the displacement of the second side core pulling in the demolding direction of the first side core pulling to be zero, and the driving unit is used to drive the second side core pulling away from the main core pulling to be demolded.

[0010] The linkage mechanism in the present scheme includes a driving unit and a holding unit. In the process in which the first-side core pulling is controlled by the first sequential control mechanism to demold while the main core pulling is not demolded, under the blocking and limiting action of the holding unit, the displacement of the second-side core pulling in the demolding direction of the first-side core pulling is zero, that is, in the process of demolding the first-side core pulling, the second-side core pulling will not be driven to move along the demolding direction of the first-side core pulling with the first-side core pulling, thereby preventing the second-side core pulling from moving with the first-side core pulling without exiting the undercut structure and damaging the undercut structure; in addition, in the process of demolding the first-side core pulling, the driving unit in the linkage mechanism drives the second-side core pulling to move away from the main core pulling for demolding. Therefore, during the demolding process of the first side core pulling, the demolding motion trajectory of the second side core pulling can only slide in the setting direction of the undercut and demold under the joint action of the holding unit and the driving unit, thereby achieving smooth demolding of the undercut. For example, the undercut direction in the drawer structure in the present application is opposite to the direction of the blind hole groove. Therefore, during the demolding process of the second side core pulling, the sliding demolding direction of the second side core pulling is opposite to the sliding demolding direction of the main core pulling. Of course, if the setting direction of the undercut in the present application and the setting direction of the blind hole groove form angles with each other, the linkage mechanism can also be used to drive the second side core pulling to demold, which will not be repeated here.

[0011] Preferably, as an improvement, the retaining unit includes an elastic retaining member and a first pressing surface and a second pressing surface that cooperate with each other, the first pressing surface is arranged on the main core pull, the second pressing surface is arranged on the second side core pull, the elastic retaining member is connected between the second side core pull and the first side core pull, and when the second side core pull is in a mold closing state, the first pressing surface and the second pressing surface are pressed against each other under the elastic force of the elastic retaining member.

[0012] In the present solution, during the demolding process of the second-side core pulling, the first pressing surface and the second pressing surface are always in a state of pressing against each other through the elastic force of the elastic retaining member. Even when the second-side core pulling moves away from the main core pulling under the driving action of the driving unit, the elastic force of the elastic retaining member on the second-side core pulling always exists, and when the second-side core pulling moves away from the main core pulling, the first pressing surface and the second pressing surface slide relative to each other but are still in a state of pressing against each other. Only when the second-side core pulling is demolded, the first pressing surface and the second pressing surface are separated from each other.

[0013] Preferably, as an improvement, the driving unit comprises an inclined groove and an inclined protrusion arranged between the first side core pulling and the second side core pulling, and the inclined protrusion and the inclined groove are matched with each other on an inclined surface.

[0014] Due to the elastic force of the elastic retaining member, the first clamping surface and the second clamping surface are always in a clamping state, and the displacement of the second side core pulling along the demoulding direction of the first side core pulling is zero, while the first side core pulling is always in the sliding demoulding process, so there will be relative sliding between the second side core pulling and the first side core pulling. In this scheme, the inclined protrusion is inserted into the inclined groove. When the second side core pulling and the first side core pulling produce relative sliding, the inclined surface matching relationship between the inclined groove and the inclined protrusion can be used to drive the second side core pulling to move along the direction of the undercut relatively away from the main core pulling, so that the undercut can be demoulded smoothly, the matching between the inclined protrusion and the inclined groove is precise, and the driving effect is stable.

[0015] Preferably, as an improvement, the elastic retaining member includes a supporting spring, a placement hole is opened on the second side core pulling, the axial direction of the placement hole is parallel to the direction in which the inclined protrusion slides relative to the inclined groove, one end of the supporting spring is located in the placement hole, and the other end is against the first side core pulling.

[0016] In the present solution, a placement hole is opened on the second side core pull, and one end of the support spring is connected to the placement hole. The placement hole can play a role in installing and fixing the support spring, so that the support spring can play a better elastic supporting role. In addition, in the present solution, the axial direction of the placement hole and the sliding direction of the inclined protrusion relative to the inclined groove are parallel to each other, so that when the second side core pull moves relative to the first side core pull under the driving unit and is demolded, the sliding direction of the second side core pull relative to the first side core pull is the same as the axial direction of the placement hole, so as to ensure that the support spring is only subjected to axial pressing during the demolding process of the second side core pull, and the support spring will not slide relative to the first side core pull when the second side core pull moves relative to the first side core pull, thereby wearing the support spring. This protects the support spring, which is beneficial to improving the stability of the support spring and extending the service life of the support spring.

[0017] Preferably, as an improvement, the second side core pulling is provided with a second sequence control mechanism for controlling the second side core pulling to slide following the first side core pulling after demolding.

[0018] In this solution, a second sequential control mechanism is used to control the second side core puller to continue sliding following the first side core puller after demolding is completed, so that the first side core puller and the second side core puller can be completely away from the side of the drawer, so that after all the side core puller structures are demolded, the entire drawer can be ejected from the movable mold using the ejector pin in the prior art.

[0019] Preferably, as an improvement, the second sequential control mechanism includes a positioning groove and a positioning protrusion that cooperate with each other, the positioning protrusion is fixedly connected to the first side core pulling, the positioning groove is arranged on the second side core pulling, one end of the positioning protrusion is inserted into the positioning groove, when the second side core pulling is closed, the positioning protrusion contacts one end of the positioning groove, and when the second side core pulling is demolded, the positioning protrusion contacts the other end of the positioning groove.

[0020] In this solution, by utilizing the cooperation of the positioning groove and the positioning protrusion, when the first side core pull and the second side core pull are in the mold closing state, the positioning protrusion contacts one end of the positioning groove, so when the first side core pull and the second side core pull start to demold, the positioning protrusion and one end of the positioning groove are also in a contact state; when the first side core pull and the second side core pull are in the demolding process, the positioning protrusion slides along the positioning groove; when the first side core pull and the second side core pull are in the state of just completing the demolding, the positioning protrusion slides to the other end of the positioning groove, and if the first side core pull continues to slide relative to the movable mold subsequently, the positioning protrusion will drive the second side core pull to slide synchronously with the first side core pull and move away from the drawer product.

[0021] Preferably, as an improvement, the main core pull is provided with a guide protrusion arranged along the demolding direction of the second side core pull, and the second side core pull is provided with a straight guide hole matching with the guide protrusion, and when the second side core pull is matched with the main core pull to close the mold, the matching length dimension of the guide protrusion and the straight guide hole is greater than the dimension moving along the demolding direction when the second side core pull is demolded.

[0022] In this solution, the sliding cooperation between the guide protrusion and the straight guide hole is utilized to limit and guide the second side core pulling away from the main core pulling demolding process, ensuring that the second side core pulling can only be demolded along the direction of the undercut and cannot slide along with the first side core pulling, thereby improving the accuracy of the second side core pulling demolding process and allowing the undercut to be formed more stably and accurately.

[0023] Preferably, as an improvement, the first sequential control mechanism includes a cylinder and an inclined ejector rod and an inclined guide hole that slide with each other, the cylinder is connected between the movable mold and the main core puller, the inclined ejector rod is fixedly connected to the fixed mold, and the inclined guide hole is opened on the first side core puller.

[0024] In this solution, the inclined ejector rod and the inclined guide hole that slide in cooperation with each other are used as the driving components of the first side core pulling. When the movable mold and the fixed mold move away from each other and the mold is opened, the first side core pulling is automatically driven to slide relative to the movable mold under the cooperation of the inclined ejector rod and the inclined guide hole, so that the first side core pulling can be demolded quickly and accurately; when the first side core pulling completes demolding, the oil cylinder pushes the main side core pulling to demold, and the demolding order of the main core pulling and the first side core pulling and the second side core pulling can be accurately controlled.

[0025] A mould comprises the multi-directional inclined top demoulding structure.

[0026] In this solution, a multi-directional inclined top demolding structure is set in the mold, which can easily form products with blind hole grooves, side structures and undercuts, and the demolding directions of the blind hole grooves, side structures and undercuts are different. The mold structure is simple and the demolding is accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1Schematic diagram of the drawer formed in this embodiment.

[0028] Figure 2 for Figure 1 Schematic diagram of the center drawer end view.

[0029] Figure 3 It is a schematic diagram of the mold closing state in the first embodiment of the present invention.

[0030] Figure 4 It is a schematic diagram of the upward viewing angle in the mold closing state in the first embodiment of the present invention.

[0031] Figure 5 It is a schematic diagram of the connection between the main core pulling and the first side core pulling in the first embodiment of the present invention.

[0032] Figure 6 It is a schematic diagram of the second side core pulling in the first embodiment of the present invention.

[0033] Figure 7 It is a schematic diagram of the second side core pulling in the first embodiment of the present invention from a bottom-up perspective.

[0034] Figure 8 For along Figure 5 Schematic diagram of the AA section view.

[0035] Fig. 9 For along Figure 5 Schematic diagram of the BB section.

[0036] Fig.10 It is an exploded view of the connection between the main core pulling, the second side core pulling, the support spring and the positioning stud in the first embodiment of the present invention.

[0037] Fig.11 It is a schematic diagram of providing an inclined groove for the first side core pulling in the first embodiment of the present invention.

[0038] Fig.12 In the second embodiment of the present invention, the same Figure 5 Schematic diagram of the BB section.

[0039] Fig.13 It is a schematic diagram of the second side core pulling from the bottom perspective in the second embodiment of the present invention. DETAILED DESCRIPTION

[0040] The following is further described in detail through specific implementation methods: The figure marks in the drawings of the specification include: drawer body 1, blind hole groove 101, end panel 102, undercut 103, main core pull 2, first abutting surface 201, guide protrusion 202, first side core pull 3, inclined guide hole 301, inclined groove 302, second side core pull 4, second abutting surface 401, inclined protrusion 402, placement hole 403, positioning groove 404, straight guide hole 405, cylinder 5, inclined push rod 6, slider body 7, drive block 8, support spring 9, pressure plate 10, positioning stud 11.

[0041] A drawer structure used in a car in the prior art is as follows Figure 1 and Figure 2 As shown, it includes a drawer body 1 and a blind hole groove 101 arranged at the end of the drawer body 1, and an undercut 103 is arranged on the side of the end panel 102 of the drawer body 1 away from the blind hole groove 101, the number of undercuts 103 is two and the two undercuts 103 are located at both ends of the end panel 102, and the direction of the undercuts 103102 is opposite to the opening direction of the blind hole groove 101. When forming the drawer structure, it is necessary to set a side core pull along the length direction of the drawer for forming the blind hole groove 101, and then set a side side core pull structure for forming the drawer side structure, and also set a side core pull structure for forming the undercut 103, and the demoulding direction of this side core pull structure is opposite to the demoulding direction of the side core pull corresponding to the blind hole groove 101.

[0042] Embodiment 1 This embodiment is as shown in the attached Figure 3 As shown: A multi-directional inclined top demoulding structure includes a movable mold and a fixed mold that cooperate with each other, and the movable mold and the fixed mold are used to form a cavity of a drawer structure ( Figure 3 The movable mold and the fixed mold structure are not shown in the figure. The movable mold is slidably connected with a main core pull 2 ​​and a first side core pull 3. The sliding directions of the main core pull 2 ​​and the first side core pull 3 form an angle with each other. The number of the first side core pulls 3 is two and the two first side core pulls 3 are respectively located at the front and rear sides of the drawer body 1. Figure 3 Only the schematic diagram of the front first side core pull 3 is shown. In this embodiment, the sliding direction of the main core pull 2 ​​is perpendicular to the sliding direction of the first side core pull 3. Figure 5 and Figure 8 The first side core pull 3 is slidably connected with a second side core pull 4 that cooperates with the main core pull 2. The main core pull 2 ​​is used to form a blind hole groove 101 structure, the first side core pull 3 is used to form a side structure of the drawer body 1, and the second side core pull 4 is used to form an undercut 103 structure.

[0043] The movable mold is connected to a first sequence control mechanism for controlling the first side core pulling 3 to be demoulded before the main core pulling 2. A linkage mechanism is connected between the first side core pulling 3 and the main core pulling 2 to drive the second side core pulling 4 to be demoulded relative to the main core pulling 2. Under the driving action of the linkage mechanism, the second side core pulling 4 is demoulded synchronously with the first side core pulling 3.

[0044] Combination Figure 3 and Figure 4 The first sequential control mechanism includes a cylinder 5 and a tilted ejector rod 6 and a tilted guide hole 301 that slide with each other, wherein the right side of the main core pull 2 ​​is fixedly connected with a slider body 7 by screws, the cylinder 5 is fixedly connected to the movable mold by screws, and a drive block 8 is fixedly connected to the output shaft of the cylinder 5 by screws, and the drive block 8 is fixedly connected to the slider body 7 by screws, and the cylinder 5 can drive the slider body 7 and the main core pull 2 ​​to slide horizontally. In addition, the tilted ejector rod 6 is fixedly connected to the fixed mold by screws, and the tilted guide hole 301 is opened on the first side core pull 3. The tilted ejector rod 6 and the tilted guide hole 301 are both inclined. When the movable molds are close to or away from each other, the tilted ejector rod 6 can be used to push the first side core pull 3 to close or demold.

[0045] The linkage mechanism includes a driving unit and a holding unit. When the first side core pull 3 is demolded before the main side core pull, the holding unit is used to control the displacement of the second side core pull 4 in the demolding direction of the first side core pull 3 to be zero, and the driving unit is used to drive the second side core pull 4 to be demolded away from the main core pull 2. Figure 7 and Fig.10 The holding unit includes an elastic holding member and a first pressing surface 201 and a second pressing surface 401 that cooperate with each other. The first pressing surface 201 is provided on the main core pull 2, and the second pressing surface 401 is provided on the second side core pull 4. The first pressing surface 201 and the second pressing surface 401 cooperate with each other in a plane, and the elastic holding member is connected between the second side core pull 4 and the first side core pull 3. In this embodiment, combined with Figure 5 , Figure 7 and Fig.11 The driving unit includes an inclined groove 302 and an inclined protrusion 402 arranged between the first side core pulling 3 and the second side core pulling 4, and the inclined surfaces between the inclined protrusion 402 and the inclined groove 302 cooperate, wherein the inclined protrusion 402 is integrally formed on the second side core pulling 4, and the inclined groove 302 is opened on the first side core pulling 3. When the first side core pulling 3 and the second side core pulling 4 slide relative to each other, under the cooperation of the inclined protrusion 402 and the inclined groove 302, the second side core pulling 4 can generate a displacement in the lateral direction relative to the first side core pulling 3. At this time, the second side core pulling 4 can approach or move away from the main core pulling 2 to complete the mold closing or demolding of the second side core pulling 4; in addition, Figure 6 , Figure 8 , Fig. 9 and Fig.10As shown, the elastic retaining member in this embodiment is a support spring 9, and a placement hole 403 is opened on the second side core pull 4. The axial direction of the placement hole 403 is parallel to the sliding direction of the inclined protrusion 402 relative to the inclined groove 302. One end of the support spring 9 is located in the placement hole 403, and the other end is against the first side core pull 3. Under the elastic force of the support spring 9, the first clamping surface 201 and the second clamping surface 401 can be in a state of being pressed against each other. In order to facilitate the installation and fixation of the support spring 9, a pressure plate 10 is fixedly connected to the first side core pull 3 by screws in this embodiment, and the support spring 9 can extend to one end outside the placement hole 403 to abut against the pressure plate 10.

[0046] In this embodiment, a second sequence control mechanism is provided on the second side core pull 4 for controlling the second side core pull 4 to follow the first side core pull 3 to slide after demoulding. Figure 7 and Fig.10 The second sequential control mechanism includes a positioning groove 404 and a positioning protrusion that cooperate with each other. The positioning protrusion in this embodiment is a positioning stud 11. The positioning groove 404 is opened on the bottom surface of the second side core pull 4. The opening direction of the positioning groove 404 is parallel to the axial direction of the placement hole 403. During use, the top end of the positioning protrusion is inserted into the positioning groove 404. When the second side core pull 4 is molded, the top end of the positioning protrusion contacts the end of the positioning groove 404 close to the drawer body 1. During the demolding process of the second side core pull 4, the positioning protrusion slides along the positioning groove 404, and when the second side core pull 4 is demolded, the top end of the positioning protrusion slides to contact the end of the positioning groove 404 away from the drawer body 1. At this time, when the first side core pull 3 continues to be demolded and slides away from the drawer body 1, the top end of the positioning protrusion contacts the end of the positioning groove 404 away from the drawer body 1 and cannot continue to slide relatively, so that the second side core pull 4 can follow the first side core pull 3 to slide in the direction away from the drawer body 1 under the action of the positioning protrusion.

[0047] In the actual application process of this embodiment, in the mold opening stage after the injection and pressure holding processes are performed after the mold is closed, first, the movable mold and the fixed mold move away from each other for demolding. During the process of the movable mold moving away from the fixed mold, under the sliding cooperation of the inclined ejector rod 6 and the inclined guide hole 301, the first side core puller 3 slides relative to the movable mold, and the sliding direction of the first side core puller 3 is the demolding direction away from the side of the drawer body 1. When the first side core puller 3 slides along the direction away from the drawer body 1 to be demolded, the demolding of the side of the drawer body 1 can be successfully completed; at the same time, when the first side core puller 3 slides to be demolded, under the sliding cooperation of the inclined protrusion 402 and the inclined groove 302, and the elastic support of the support spring 9, the second side core puller 4 can only slide along the length direction of the drawer body 1 to be demolded (that is, the second side core puller 4 slides in the direction away from the main core puller 2), and the displacement in the demolding direction of the first side core puller 3 is zero. At this time, the second side core puller 4 is successfully demolded to form an undercut 103.

[0048] When the second side core pull 4 slides relative to the main core pull 2 ​​to complete the demoulding action, the top of the positioning protrusion slides along the positioning groove 404 to the end of the positioning groove 404 away from the drawer body 1. Since the length of the undercut 103 is smaller than the demoulding size of the drawer side structure, when the second side core pull 4 completes the demoulding, the first side core pull 3 still has not completed the demoulding action. Therefore, the first side core pull 3 continues to slide away from the drawer body 1 under the driving action of the inclined ejector 6 to complete the demoulding action of the first side core pull 3 until the first side core pull 3 completely exits the side of the drawer body 1. When the second side core pull 4 and the first side core pull 3 have completed the demoulding, the output shaft of the oil cylinder 5 extends, and through the intermediate driving action of the driving block 8, the slider body 7 and the main core pull 2 ​​slide relative to the movable mold to complete the demoulding of the main core pull 2. At this time, all demoulding processes are completed, and then the entire drawer is ejected from the movable mold using the ejector pin in the prior art to complete the injection molding of the drawer.

[0049] When the next mold is closed after completing the drawer molding, the cylinder 5 first drives the main core pull 2 ​​to reset, and then the movable mold and the fixed mold are close to each other and closed. During the closing process of the movable mold and the fixed mold, the inclined ejector rod 6 is inserted into the inclined guide hole 301. With the cooperation of the inclined ejector rod 6 and the inclined guide hole 301, the first side core pull 3 is reset first, and during the resetting process of the first side core pull 3, the first clamping surface 201 and the second clamping surface 401 first contact and clamp each other. After that, even if the first side core pull 3 continues to slide and reset relative to the movable mold, the second side core pull 4 cannot continue to slide in the sliding direction of the first side core pull 3 with the first side core pull 3, and the second side core pull 4 and the first side core pull 3 produce relative sliding. At this time, under the sliding cooperation of the inclined groove 302 and the inclined protrusion 402, the second side core pull 4 can only slide in the direction close to the main core pull 2, and finally contact with the main core pull 2 ​​to complete the resetting of the second side core pull 4, and then the first side core pull 3 also slides to the reset state, and the entire structure completes the closing of the movable mold.

[0050] A mold includes the above-mentioned multi-directional inclined top demolding structure. By setting a multi-directional inclined top demolding structure in the mold, not only can the drawer body 1, the blind hole groove 101 and the drawer side structure be formed, but also the undercut 103 structure can be smoothly formed. A plurality of inclined top structures in different directions are set in the mold, and the structure is simple and can accurately complete the product molding. In addition, it should be pointed out that in this embodiment, only the molding of the drawer structure is used as an example to illustrate the mold in this scheme. Of course, without departing from the core design of the mold in this scheme, it can also be used to form inclined top demolding in different directions similar to the drawer structure. These all belong to the protection scope of this scheme and will not be repeated here.

[0051] Embodiment 2 The difference between the second embodiment and the first embodiment is that: Fig.12 and Fig.13As shown, in order to make the demoulding process of the second side core pulling 4 more accurate and controllable, in this embodiment, a guide protrusion 202 arranged along the demoulding direction of the second side core pulling 4 is integrally formed on the main core pulling 2, and a straight guide hole 405 cooperating with the guide protrusion 202 is opened on the second side core pulling 4. When the second side core pulling 4 is in a mold closing state, the guide protrusion 202 is inserted into the straight guide hole 405, and when the second side core pulling 4 is molded with the main core pulling 2, the matching length dimension of the guide protrusion 202 and the straight guide hole 405 is greater than the dimension moved along the demoulding direction when the second side core pulling 4 is demoulded, for example, the depth of the undercut 103 in this embodiment. The matching length of the guide protrusion 202 and the straight guide hole 405 can be set to 2mm, so that during the demolding process of the second side core pulling 4, under the limiting action of the guide protrusion 202, the second side core pulling 4 can only slide along the axial direction of the guide protrusion 202, that is, the second side core pulling 4 can only slide and demold in the direction away from the main core pulling 2. Only when the second side core pulling 4 completes the demolding and the guide protrusion 202 exits the straight guide hole 405, can the second side core pulling 4 follow the first side core pulling 3 and move along the demolding sliding direction of the first side core pulling 3, thereby effectively ensuring the accuracy of the demolding process of the second side core pulling 4.

[0052] The above is only an embodiment of the present invention, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A multi-directional inclined ejection structure, comprising a movable mold and a fixed mold that cooperate with each other, characterized in that: The movable mold is slidably connected with a main core pull and a first side core pull, and the sliding directions of the main core pull and the first side core pull form an angle with each other. The movable mold is connected with a first sequence control mechanism for controlling the first side core pull to be demolded before the main core pull; the first side core pull is slidably connected with a second side core pull cooperating with the main core pull, and a linkage mechanism for driving the second side core pull to be demolded relative to the main core pull is connected between the first side core pull and the main core pull, and under the driving action of the linkage mechanism, the second side core pull is demolded synchronously with the first side core pull.

2. A multi-directional inclined top demoulding structure according to claim 1, characterized in that: The linkage mechanism includes a driving unit and a holding unit. When the first side core pulling is demolded before the main side core pulling, the holding unit is used to control the displacement of the second side core pulling in the demolding direction of the first side core pulling to be zero, and the driving unit is used to drive the second side core pulling away from the main core pulling for demolding.

3. A multi-directional inclined top demoulding structure according to claim 2, characterized in that: The holding unit includes an elastic holding member and a first pressing surface and a second pressing surface that cooperate with each other, wherein the first pressing surface is arranged on the main core pull, and the second pressing surface is arranged on the second side core pull, and the elastic holding member is connected between the second side core pull and the first side core pull, and when the second side core pull is in a mold closing state, the first pressing surface and the second pressing surface are pressed against each other under the elastic force of the elastic holding member.

4. The multi-directional inclined top demoulding structure according to claim 2, characterized in that: The driving unit comprises an inclined groove and an inclined protrusion arranged between the first side core pulling and the second side core pulling, and the inclined protrusion and the inclined groove are matched with each other by inclined surfaces.

5. The multi-directional inclined top demoulding structure according to claim 3, characterized in that: The elastic retaining member includes a supporting spring, a placing hole is opened on the second side core pulling, the axial direction of the placing hole is parallel to the direction in which the inclined protrusion slides relative to the inclined groove, one end of the supporting spring is located in the placing hole, and the other end is against the first side core pulling.

6. The multi-directional inclined top demoulding structure according to claim 1, characterized in that: The second side core pulling is provided with a second sequence control mechanism for controlling the second side core pulling to slide following the first side core pulling after demolding.

7. The multi-directional inclined top demoulding structure according to claim 6, characterized in that: The second sequential control mechanism includes a positioning groove and a positioning protrusion that cooperate with each other. The positioning protrusion is fixedly connected to the first side core pulling, and the positioning groove is arranged on the second side core pulling. One end of the positioning protrusion is inserted into the positioning groove. When the second side core pulling is closed, the positioning protrusion contacts one end of the positioning groove. When the second side core pulling is demolded, the positioning protrusion contacts the other end of the positioning groove.

8. The multi-directional inclined top demoulding structure according to claim 1, characterized in that: The main core pulling is provided with a guide protrusion arranged along the demolding direction of the second side core pulling, and the second side core pulling is provided with a straight guide hole matching with the guide protrusion. When the second side core pulling is matched with the main core pulling and the mold is closed, the matching length dimension of the guide protrusion and the straight guide hole is greater than the dimension moving along the demolding direction when the second side core pulling is demolded.

9. The multi-directional inclined top demoulding structure according to claim 1, characterized in that: The first sequential control mechanism includes a cylinder and a tilted ejector rod and a tilted guide hole that slide with each other. The cylinder is connected between the movable mold and the main core puller, the tilted ejector rod is fixedly connected to the fixed mold, and the tilted guide hole is opened on the first side core puller.

10. A mold, characterized in that: It comprises a multi-directional inclined top demoulding structure as described in any one of claims 1-9.

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