Combined core pulling mechanism and injection mold

Abstract

The present invention discloses a combined core-pulling mechanism and an injection mold, and relates to the field of mold technology. The combined core-pulling mechanism includes an inclined guide column, a first slider, an inclined top and a guide seat. The inclined guide column extends into the first slider and is slidably matched with the first slider. The first slider is provided with a guide slot. The inclined top is slidably arranged in the guide slot and is slidably matched with the guide seat. The first slider can slide along a first direction under the action of the inclined guide column when the mold is opened, so that the inclined top slides relative to the guide seat along a second direction under the action of the slot wall of the guide slot, and the first direction and the second direction intersect. Compared with the prior art, the combined core-pulling mechanism provided by the present invention can simultaneously complete core-pulling actions in two different directions, simplify the core-pulling structure, reduce the occupied space, reduce the mold manufacturing cost, and make the core-pulling process stable and reliable, thereby ensuring the product molding quality.

Description

Technical Field

[0001] The invention relates to the technical field of molds, and in particular to a combined core-pulling mechanism and an injection mold. Background Art

[0002] At present, in the design and manufacture of injection molds, if the product needs to pull the core in two different directions, two different core pulling mechanisms are usually used to pull the core separately. In this way, both sets of core pulling mechanisms are installed in the mold, which has a complex structure and occupies a large space, resulting in an increase in the size of the mold frame and the cost of mold manufacturing. In addition, the core pulling process is complicated, there are errors in the matching between parts, and the product molding quality is low. Summary of the invention

[0003] The problem solved by the invention is how to simultaneously complete core pulling actions in two different directions, simplify the core pulling structure, reduce the occupied space, reduce the mold manufacturing cost, and make the core pulling process stable and reliable to ensure the product molding quality.

[0004] To solve the above problems, the technical solution of the present invention is achieved as follows:

[0005] In the first aspect, the present invention provides a combined core-pulling mechanism, including an inclined guide column, a first slider, an inclined top and a guide seat, wherein the inclined guide column is used to be fixedly installed on a fixed mold plate, the inclined guide column extends into the first slider and is slidably matched with the first slider, the first slider is provided with a guide slot, the inclined top is slidably arranged in the guide slot and is slidably matched with the guide seat, and the first slider can slide along a first direction under the action of the inclined guide column when opening the mold, so that the inclined top slides relative to the guide seat in a second direction under the action of the slot wall of the guide slot, and the first direction and the second direction intersect. Compared with the prior art, the combined core-pulling mechanism provided by the present invention can simultaneously complete core-pulling actions in two different directions, simplify the core-pulling structure, reduce the occupied space, reduce the mold manufacturing cost, and make the core-pulling process stable and reliable, thereby ensuring the product molding quality.

[0006] Furthermore, the first direction and the second direction are perpendicular to each other, so that two structures on the product whose core pulling directions are perpendicular to each other are subjected to core pulling molding.

[0007] Furthermore, the guide slide groove is provided with a first side wall and a second side wall opposite to each other, the inclined top is provided between the first side wall and the second side wall and can slide relative to the first side wall and the second side wall, the first side wall and the second side wall both extend along a third direction, and the third direction is provided at a preset angle with the first direction, so that the guide slide groove cooperates with the inclined top, so that the inclined top can slide along the extension direction of the guide slide groove.

[0008] Furthermore, the preset angle ranges from 15 degrees to 60 degrees, so as to reduce the sliding friction between the guide groove and the inclined roof and improve the sliding efficiency of the inclined roof.

[0009] Furthermore, the inclined top includes an inclined top body and a supporting block, the inclined top body is fixedly connected to the supporting block, the cross-sectional area of ​​the supporting block is larger than the cross-sectional area of ​​the inclined top body, the inclined top body is slidably arranged in the guide slide groove, and the supporting block can be supported by the first slider to prevent the inclined top body from being separated from the guide slide groove, thereby ensuring that the movement of the inclined top is stable and reliable.

[0010] Furthermore, a groove is formed in the second direction at one end of the inclined top body away from the supporting block, and a buckle platform is provided on the guide seat, the buckle platform has an L-shaped cross section, and the buckle platform is slidably arranged in the groove. The buckle platform can limit the groove wall of the groove, so that the inclined top body can only slide in the second direction.

[0011] Furthermore, the combined core-pulling mechanism also includes a second slider and a driving member, the driving member is connected to the second slider, the first slider is slidably arranged on the second slider, and the guide seat is fixedly connected to the second slider. The driving member can drive the second slider to slide relative to the movable template to realize core-pulling molding of other structures of the product.

[0012] Furthermore, the combined core-pulling mechanism further comprises two pressure strips, which are arranged at intervals and are both fixedly connected to the second slider, and the first slider is slidably arranged between the two pressure strips. The two pressure strips jointly limit the first slider so that the first slider can only slide along the first direction.

[0013] Furthermore, the combined core-pulling mechanism further includes a limiting member, which is fixedly connected to the second slider and can limit the first slider to prevent the first slider from being separated from the second slider.

[0014] In the second aspect, the present invention provides an injection mold, including the above-mentioned combined core-pulling mechanism, which includes an inclined guide column, a first slider, an inclined top and a guide seat, the inclined guide column is used to be fixedly installed on the fixed template, the inclined guide column extends into the first slider, and slides with the first slider, the first slider is provided with a guide slot, the inclined top is slidably arranged in the guide slot, and slides with the guide seat, the first slider can slide along the first direction under the action of the inclined guide column when the mold is opened, so that the inclined top slides relative to the guide seat in the second direction under the action of the groove wall of the guide slot, and the first direction and the second direction intersect. The injection mold can simultaneously complete the core pulling action in two different directions, simplify the core pulling structure, reduce the occupied space, reduce the mold manufacturing cost, and make the core pulling process stable and reliable, ensuring the product molding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a structural schematic diagram of the combined core-pulling mechanism according to the first embodiment of the present invention;

[0016] Figure 2 It is a structural schematic diagram of the fixed template in the combined core-pulling mechanism according to the first embodiment of the present invention cooperating with the first sliding block through the shovel base and the inclined guide column;

[0017] Figure 3 It is a structural schematic diagram from a first perspective of the combined core-pulling mechanism according to the first embodiment of the present invention, in which the inclined top is respectively slidably matched with the first slider and the guide seat;

[0018] Figure 4 It is a structural schematic diagram from a second perspective in which the inclined top of the combined core-pulling mechanism according to the first embodiment of the present invention is respectively slidably matched with the first slider and the guide seat;

[0019] Figure 5 It is a structural schematic diagram from a third perspective in which the inclined top in the combined core-pulling mechanism according to the first embodiment of the present invention is respectively slidably matched with the first slider and the guide seat;

[0020] Figure 6 It is a structural schematic diagram of the sliding cooperation between the first slider and the inclined top in the combined core-pulling mechanism according to the first embodiment of the present invention from one viewing angle;

[0021] Figure 7 It is a structural schematic diagram of another perspective of the sliding cooperation between the first slider and the inclined top in the combined core-pulling mechanism according to the first embodiment of the present invention;

[0022] Figure 8 It is a structural schematic diagram of the second sliding block in the combined core-pulling mechanism according to the first embodiment of the present invention being fixedly connected to the guide seat and the pressure strip respectively;

[0023] Fig. 9 It is a structural schematic diagram of the second slider in the combined core-pulling mechanism according to the first embodiment of the present invention;

[0024] Fig.10 It is a schematic structural diagram of the injection mold described in the second embodiment of the present invention.

[0025] Description of reference numerals:

[0026] 10-injection mold; 100-combined core-pulling mechanism; 110-fixed mold plate; 120-movable mold plate; 130-shovel base; 140-inclined guide column; 150-first slider; 151-guide groove; 152-first side wall; 153-second side wall; 160-inclined top; 161-inclined top body; 162-support block; 163-groove; 170-guide seat; 171-buckle platform; 180-second slider; 181-installation groove; 182-wear-resistant block; 183-first fixed groove; 184-second fixed groove; 185-third fixed groove; 190-driving member; 200-pressing strip; 210-limiting member; 300-movable mold base plate; 400-fixed mold base plate. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0028] First embodiment

[0029] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 The embodiment of the present invention provides a combined core-pulling mechanism 100 for core-pulling molding of products. It can simultaneously complete core-pulling actions in two different directions, simplify the core-pulling structure, reduce the occupied space, reduce the mold manufacturing cost, and make the core-pulling process stable and reliable, thereby ensuring the molding quality of the product. In this embodiment, the combined core-pulling mechanism 100 is used to perform core-pulling on products containing both buckles and ribs, wherein the core-pulling direction of the buckle and the core-pulling direction of the rib are perpendicular to each other, and the combined core-pulling mechanism 100 can perform core-pulling molding in these two directions simultaneously.

[0030] The combined core-pulling mechanism 100 includes a fixed mold plate 110, a movable mold plate 120, a shovel base 130, an inclined guide column 140, a first slider 150, an inclined top 160, a guide seat 170, a second slider 180, a driving member 190, a pressure strip 200 and a stopper 210. The movable mold plate 120 can approach or move away from the fixed mold plate 110 to achieve relative movement between the movable mold plate 120 and the fixed mold plate 110, thereby completing the mold closing or mold opening action. The shovel base 130 and the inclined guide column 140 are arranged at intervals and are both fixedly installed on the fixed mold plate 110. The first slider 150 is fitted on the inclined surface of the shovel base 130. The inclined guide column 140 extends into the first slider 150 and slidably cooperates with the first slider 150. The first slider 150 is slidably arranged on the second slider 180. When the mold is opened, the shovel base 130 and the inclined guide pillar 140 are relatively away from the movable template 120 under the drive of the fixed template 110. In this process, the shovel base 130 and the inclined guide pillar 140 can simultaneously limit the first slider 150 to drive the first slider 150 to slide relative to the second slider 180 and move away from the product in the first direction to achieve core pulling molding in the first direction. Specifically, the inclination angle of the inclined guide pillar 140 is the same as the inclination angle of the inclined surface of the shovel base 130. The inclined guide pillar 140 and the inclined surface of the shovel base 130 work together to drive the first slider 150 to slide on the second slider 180, thereby improving the stability of the transmission.

[0031] It is worth noting that the pressure strip 200 is fixedly connected to the second slider 180, and the pressure strip 200 is used to limit and guide the first slider 150, so that the first slider 150 can only move along the first direction relative to the second slider 180. The limiter 210 is fixedly connected to the second slider 180, and the limiter 210 can abut against the first slider 150 to limit the limit position of the first slider 150 and prevent the first slider 150 from separating from the second slider 180. The first slider 150 is provided with a guide groove 151, and the inclined top 160 is slidably arranged in the guide groove 151 and slidably cooperates with the guide seat 170. The guide seat 170 is fixedly connected to the second slider 180, and the groove wall of the guide groove 151 can apply a thrust to the inclined top 160, pushing the inclined top 160 to move along the extension direction of the guide seat 170, that is, to move in the second direction. When the mold is opened, the first slider 150 slides along the first direction under the action of the inclined guide column 140 to realize the core pulling molding of the product in the first direction. During this process, the inclined top 160 slides relative to the guide seat 170 under the action of the groove wall of the guide groove 151, and moves away from the product in the second direction to realize the core pulling molding in the second direction, thereby completing the core pulling molding in two directions at the same time, and the core pulling process is simple and reliable.

[0032] It should be noted that the first direction and the second direction intersect to realize the core pulling molding of the product in two different directions, and the two core pulling processes are completed synchronously, which can shorten the core pulling time and reduce the product production cycle. In this embodiment, the first direction and the second direction are perpendicular to each other to realize the core pulling action of the buckle and the rib on the product at the same time.

[0033] Please refer to Figure 5 , Figure 6 and Figure 7 It is worth noting that the guide groove 151 is provided with a first side wall 152 and a second side wall 153 opposite to each other. The inclined top 160 is provided between the first side wall 152 and the second side wall 153, and can slide relative to the first side wall 152 and the second side wall 153. When the mold is opened, the first side wall 152 can apply a thrust to the inclined top 160 to push the inclined top 160 to move relative to the guide seat 170 along the second direction; when the mold is closed, the second side wall 153 can apply a thrust to the inclined top 160 to push the inclined top 160 to move in the opposite direction relative to the guide seat 170 along the second direction.

[0034] It should be noted that the first side wall 152 and the second side wall 153 both extend along the third direction, and the third direction is set at a preset angle with the first direction. When the first slider 150 moves along the first direction, it will apply a thrust to the inclined top 160 through the first side wall 152, and the direction of the thrust is perpendicular to the third direction. A force analysis is performed on the inclined top 160, and the thrust is decomposed into a first component force parallel to the first direction and a second component force parallel to the second direction. Since the inclined top 160 slides with the guide seat 170, the guide seat 170 will limit and support the inclined top 160 in the first direction, and the supporting force applied by the guide seat 170 to the inclined top 160 is balanced with the first component force, so that the inclined top 160 will not move in the first direction. Therefore, the inclined top 160 will only slide relative to the guide seat 170 along the second direction under the action of the second component force, thereby realizing core pulling molding of the product in the second direction. For ease of understanding, the thrust applied by the first side wall 152 to the inclined top 160 is represented as F3, the first force component is represented as F1, and the second force component is represented as F2.

[0035] Specifically, the preset angle ranges from 15 degrees to 60 degrees, so that the first slider 150 cooperates with the guide seat 170 and reduces the sliding friction between the first slider 150 and the guide seat 170. In this embodiment, the preset angle is 30 degrees, but it is not limited thereto. In other embodiments, the preset angle can be 15 degrees or 60 degrees, and the size of the preset angle is not specifically limited.

[0036] The inclined top 160 includes an inclined top body 161 and a supporting block 162. The inclined top body 161 is fixedly connected to the supporting block 162. In the present embodiment, the inclined top body 161 and the supporting block 162 are integrally formed to improve the connection strength. The inclined top body 161 is slidably disposed in the guide groove 151, and the first side wall 152 or the second side wall 153 can apply a thrust to the inclined top body 161. The cross-sectional area of ​​the supporting block 162 is greater than the cross-sectional area of ​​the inclined top body 161. The supporting block 162 is disposed outside the guide groove 151, and the supporting block 162 can resist the first slider 150 to prevent the inclined top body 161 from being separated from the guide groove 151, thereby ensuring that the movement of the inclined top 160 is stable and reliable.

[0037] In this embodiment, a groove 163 is provided along the second direction at one end of the inclined top body 161 away from the abutting block 162, and a buckle platform 171 is provided on the guide seat 170. The cross section of the buckle platform 171 is L-shaped, and the buckle platform 171 is slidably disposed in the groove 163. The buckle platform 171 can limit the groove wall of the groove 163, so that the inclined top body 161 can only slide along the second direction. However, it is not limited to this. In other embodiments, a buckle platform 171 is provided at one end of the inclined top body 161 away from the abutting block 162, and the guide seat 170 is provided with a groove 163 along the second direction. The buckle platform 171 is slidably disposed in the groove 163, and the guide seat 170 can also realize the limiting and guiding function of the inclined top body 161 by the guide seat 170.

[0038] Please refer to Figure 8 and Fig. 9 In this embodiment, there are two pressure strips 200, which are arranged at intervals and fixedly connected to the second slider 180. The first slider 150 is slidably arranged between the two pressure strips 200. The two pressure strips 200 jointly limit the first slider 150 so that the first slider 150 can only slide along the first direction.

[0039] In this embodiment, the limiting member 210 is a limiting screw, but is not limited thereto. In other embodiments, the limiting member 210 may be a limiting column or a limiting buckle, and the shape and structure of the limiting member 210 are not specifically limited.

[0040] It should be noted that a mounting groove 181 is provided on the second slider 180, and a wear-resistant block 182 is fixedly installed on the bottom wall of the mounting groove 181. The first slider 150 is slidably set on the wear-resistant block 182. The wear-resistant block 182 is made of a tough and wear-resistant material and can protect the first slider 150, preventing the first slider 150 from directly rubbing against the second slider 180, thereby avoiding wear of the first slider 150. In addition, the second slider 180 is also provided with a first fixed groove 183, a second fixed groove 184 and two third fixed grooves 185. The first fixed groove 183, the second fixed groove 184 and the third fixed groove 185 are all arranged around the installation groove 181. The guide seat 170 is fixedly installed in the first fixed groove 183. The first fixed groove 183 can fix and limit the guide seat 170. The limiting member 210 is fixedly installed in the second fixed groove 184. The second fixed groove 184 can fix and limit the limiting member 210. The two pressure strips 200 are fixedly installed in the third fixed groove 185 one by one. The third fixed groove 185 can fix and limit the pressure strip 200.

[0041] It is worth noting that there are multiple mounting grooves 181 on the second slider 180, and the numbers of wear-resistant blocks 182, shovel bases 130, inclined guide columns 140, first sliders 150, inclined tops 160, guide seats 170 and limit members 210 are all multiple. The number of pressure strips 200 is twice the number of first sliders 150. Multiple first sliders 150 are arranged in parallel and at intervals to simultaneously pull the cores of multiple buckles and ribs on the product, thereby improving product production efficiency. In this embodiment, the number of mounting grooves 181, wear-resistant blocks 182, shovel bases 130, inclined guide columns 140, first sliders 150, inclined tops 160, guide seats 170 and position-limiting members 210 is three, but is not limited thereto. In other embodiments, the number of mounting grooves 181, wear-resistant blocks 182, shovel bases 130, inclined guide columns 140, first sliders 150, inclined tops 160, guide seats 170 and position-limiting members 210 may be two or four, and the number of mounting grooves 181, wear-resistant blocks 182, shovel bases 130, inclined guide columns 140, first sliders 150, inclined tops 160, guide seats 170 and position-limiting members 210 is not specifically limited.

[0042] In this embodiment, the driving member 190 is installed on the side of the movable plate 120 and connected to the second slider 180. The driving member 190 can drive the second slider 180 to slide relative to the movable plate 120 to achieve the core-pulling molding of other structures of the product. Specifically, the driving member 190 is a hydraulic cylinder, and the driving member 190 can use hydraulic oil for transmission to drive the second slider 180 to move.

[0043] During the mold opening process, the movable template 120 moves in the direction away from the fixed template 110, so that the shovel base 130 and the inclined guide column 140 move in the direction away from the first slider 150. The shovel base 130 and the inclined guide column 140 both slide in cooperation with the first slider 150, so that the first slider 150 moves in the first direction relative to the second slider 180. At this time, the two pressure strips 200 simultaneously limit the first slider 150, and the first slider 150 realizes core pulling molding of the product in the first direction. During this process, the guide groove 151 of the first slider 150 applies a thrust to the inclined top 160, so that the inclined top 160 moves in the second direction relative to the guide seat 170, and the inclined top 160 realizes core pulling molding of the product in the second direction. When the first slider 150 moves to the limit position, the first slider 150 abuts against the limiter 210, and the limiter 210 can prevent the first slider 150 from continuing to slide. At this time, the shovel base 130 and the inclined guide column 140 are both separated from the first slider 150, and continue to move away from the movable template 120 under the drive of the movable template 120 until the mold opening is completed. After the mold opening is completed, the driving member 190 drives the second slider 180 to slide relative to the movable template 120 to realize the core pulling molding of other structures of the product.

[0044] In the combined core-pulling mechanism 100 described in the embodiment of the present invention, the inclined guide column 140 is used to be fixedly installed on the fixed mold plate 110, the inclined guide column 140 extends into the first slider 150, and slidably cooperates with the first slider 150, the first slider 150 is provided with a guide groove 151, the inclined top 160 is slidably arranged in the guide groove 151, and slidably cooperates with the guide seat 170, the first slider 150 can slide along the first direction under the action of the inclined guide column 140 when opening the mold, so that the inclined top 160 slides along the second direction relative to the guide seat 170 under the action of the groove wall of the guide groove 151, and the first direction and the second direction intersect. Compared with the prior art, the combined core pulling mechanism 100 provided by the present invention adopts a first slider 150 that slides with the inclined guide column 140 and an inclined top 160 that is slidably arranged in the guide groove 151 and slides with the guide seat 170. Therefore, it can complete core pulling actions in two different directions at the same time, simplify the core pulling structure, reduce the occupied space, reduce the mold manufacturing cost, and make the core pulling process stable and reliable, thereby ensuring the product molding quality.

[0045] Second embodiment

[0046] Please refer to Fig.10 The present invention provides an injection mold 10 for producing plastic products. The injection mold 10 includes a combined core-pulling mechanism 100, a fixed mold base plate 400 and a movable mold base plate 300. The basic structure and principle of the combined core-pulling mechanism 100 and the technical effects produced are the same as those of the first embodiment. For the sake of brief description, for the parts not mentioned in this embodiment, reference may be made to the corresponding contents in the first embodiment.

[0047] In this embodiment, the movable mold base plate 300 is connected to the movable mold plate 120, and the fixed mold base plate 400 is connected to the fixed mold plate 110. The movable mold base plate 300 and the fixed mold base plate 400 are relatively installed on both sides of the injection molding machine (not shown in the figure). The injection molding machine can drive the movable mold plate 120 to approach or move away from the fixed mold plate 110 through the movable mold base plate 300, thereby realizing the mold opening or mold closing action of the combined core pulling mechanism 100.

[0048] The beneficial effects of the injection mold 10 described in the embodiment of the present invention are the same as those of the first embodiment, and will not be described in detail herein.

[0049] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

Claims

1. A combined core pulling mechanism, characterized in that: The invention comprises an inclined guide column (140), a first slider (150), an inclined top (160) and a guide seat (170), wherein the inclined guide column (140) is used for being fixedly mounted on a fixed mold plate (110), the inclined guide column (140) extends into the first slider (150) and is slidably matched with the first slider (150), the first slider (150) is provided with a guide slot (151), the inclined top (160) is slidably arranged in the guide slot (151) and is slidably matched with the guide seat (170), the first slider (150) can slide along a first direction under the action of the inclined guide column (140) when the mold is opened, so that the inclined top (160) slides along a second direction relative to the guide seat (170) under the action of the slot wall of the guide slot (151), and the first direction and the second direction intersect; The inclined top (160) comprises an inclined top body (161) and a supporting block (162), the inclined top body (161) is fixedly connected to the supporting block (162), the cross-sectional area of ​​the supporting block (162) is larger than the cross-sectional area of ​​the inclined top body (161), the inclined top body (161) is slidably disposed in the guide groove (151), and the supporting block (162) can be supported by the first sliding block (150) to prevent the inclined top body (161) from being separated from the guide groove (151); A groove (163) is formed along the second direction at one end of the inclined top body (161) away from the supporting block (162); the guide seat (170) is provided with a buckle platform (171); the buckle platform (171) has an L-shaped cross section, and the buckle platform (171) is slidably disposed in the groove (163); The first direction and the second direction are perpendicular to each other.

2. The combined core-pulling mechanism according to claim 1, characterized in that: The guide groove (151) is provided with a first side wall (152) and a second side wall (153) opposite to each other, the inclined top (160) is provided between the first side wall (152) and the second side wall (153), and is capable of sliding relative to the first side wall (152) and the second side wall (153), the first side wall (152) and the second side wall (153) both extending along a third direction, and the third direction is provided at a preset angle with the first direction.

3. The combined core-pulling mechanism according to claim 2, characterized in that: The preset angle ranges from 15 degrees to 60 degrees.

4. The combined core-pulling mechanism according to claim 1, characterized in that: The combined core-pulling mechanism further comprises a second slider (180) and a driving member (190), wherein the driving member (190) is connected to the second slider (180), the first slider (150) is slidably disposed on the second slider (180), and the guide seat (170) is fixedly connected to the second slider (180).

5. The combined core-pulling mechanism according to claim 4, characterized in that: The combined core-pulling mechanism further comprises two pressure strips (200), the two pressure strips (200) are arranged at intervals and are both fixedly connected to the second slider (180), and the first slider (150) is slidably arranged between the two pressure strips (200).

6. The combined core-pulling mechanism according to claim 4, characterized in that: The combined core-pulling mechanism further comprises a limiting member (210), wherein the limiting member (210) is fixedly connected to the second sliding block (180), and the limiting member (210) is capable of limiting the position of the first sliding block (150).

7. An injection mold, characterized in that: It comprises a combined core-pulling mechanism as described in any one of claims 1 to 6.

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