A two-color mold slide ejection mechanism

Abstract

This invention relates to a two-color mold slider ejection mechanism, which mainly consists of a slanted guide post fixing block, a slanted guide post, a spring block, a movable slider, a locking slider, a slider seat, and a bottom wear-resistant plate. The positioning block is assembled in the bottom wear-resistant plate, serving to prevent ejection after a single injection and to position the slider after secondary mold opening. The slanted guide post fixing block and the slanted guide post are fixed to the mother mold side, functioning to move the movable slider and push the locking slider, which in turn acts on the spring block. The locking slider, spring block, and movable slider are assembled inside the slider seat, guided by the guide groove of the slider seat. The bottom wear-resistant plate is located at the bottom of the slider seat. The elastic element mainly serves for mold opening positioning and resetting. The beneficial effect of this invention is that, through the aforementioned components, it adopts a different principle from traditional two-color injection molding machines, making this mechanism simpler than the complex mechanisms in traditional two-color molds, occupying less space, resulting in a smaller mold and reducing the unit cost of the mold and product.

Description

[Technical Field]

[0001] This invention relates to the field of mold mechanism technology, and in particular to a two-color mold slider ejection mechanism. [Background Technology]

[0002] Two-color injection molding refers to a molding method in which two different colors or physical properties of plastics are injected into the same mold, resulting in a product with two different colors or physical properties, thereby improving the product's practicality and aesthetics.

[0003] The slider mechanism, which prevents retraction during the first injection and retracts during the second, is one of the most common mechanisms in two-color molds. It is mainly used for the slider to participate in the side molding and undercutting during the first injection (referred to as the first injection). At the same time, it plays a role in fixing the product from the first injection and sealing the soft rubber during the second injection (referred to as the second injection). Because the slider is required to be in a closed state during the second injection, it cannot move after the first injection. If the slider moves and opens after the first injection and then closes back during the second injection, the slider will damage the already molded product.

[0004] Two-color injection molding involves two injection tubes that inject different types of plastic. First, after the first mold is closed, the first material is injected into the first mold using the first set of nozzles. After the first material is injected, the male mold is opened under the pulling force of the injection molding machine, but it does not eject at this time. Next, the male mold, carrying the product, rotates 180 degrees and closes with the second mold, using the second set of nozzles. After the mold is closed, the second material can be injected into the second mold using the second set of nozzles. After heat preservation and cooling, the male and female molds are opened, and the product is ejected, thus obtaining a two-color molded product.

[0005] However, currently, in dual-color molds, such as Figure 1 The mechanism shown is quite complex. During the first injection mold opening, the inclined guide post only drives the front mold to move. During the second injection mold opening, the front mold drives the rear mold to open. This mechanism uses a dual mold, which results in a relatively large mold base, and consequently a relatively large mold. This leads to a large tonnage of the molding machine used, and a relatively high unit cost for both the mold and the product. Therefore, creating a new type of mechanism is the direction for mold factories to develop.

[0006] In view of this, it is necessary to provide a two-color mold slider exit mechanism to solve the above problems. [Summary of the Invention]

[0007] The technical problem to be solved by this invention is that the current two-color mold mechanism is relatively complex, occupies a large space, resulting in a large mold base, which in turn leads to a large mold, resulting in a large tonnage of the molding machine and a high cost of mold and product. This invention provides a two-color mold slider exit mechanism to solve the above problems.

[0008] The solution to the technical problem of this invention is: a two-color mold slider exit mechanism, comprising:

[0009] The master mold, wherein the master mold is provided with a first injection master mold and a second injection master mold in the mold, wherein;

[0010] A first injection mold and a first injection inclined guide post fixing block are fixed in the first injection mold. The first injection inclined guide post fixing block is provided with a first inclined guide post. The first inclined guide post is fixed in the first injection mold by the first injection inclined guide post fixing block. The first injection inclined guide post fixing block is provided with a first groove.

[0011] The two-shot master mold has a two-shot inclined guide post fixing block fixed in it. The two-shot inclined guide post fixing block has a second inclined guide post, which is fixed in the two-shot master mold by the two-shot inclined guide post fixing block. The two-shot inclined guide post fixing block has a second groove and a third groove.

[0012] The mold includes a slider mechanism, which comprises a spring block, a movable slider, a locking slider, a slider seat, and a bottom wear-resistant plate.

[0013] A bouncing block, wherein one side of the bouncing block is connected to a first elastic element, the first elastic element is fixed on a fixed block, the bouncing block has a bouncing block groove on the side with a movable slider, and the bouncing block has a bouncing block concave ridge on the side with a locking slider.

[0014] The movable slider has a central hole in its center and a positioning elastic element on one side. The positioning elastic element is used to position the movable slider after the first injection mold opening to prevent the second injection inclined guide post from not being able to pass through the central hole of the movable slider when the second injection mold is closed. The movable slider has a movable slider groove on the side with the spring block.

[0015] The locking slider has a locking slider protrusion at one end with a spring block, a second elastic element at one end of the locking slider for controlling the movement of the locking slider, and a pressure plate at one end of the locking slider. The pressure plate presses the locking slider down through its bottom surface to ensure that the locking slider moves in the direction of the force under the action of the second elastic element.

[0016] A slider seat, wherein the slider seat is provided with a guide groove and the bottom of the slider seat is provided with a slider seat groove;

[0017] A bottom wear-resistant plate is provided at the bottom of the slider seat. A positioning hole is provided in the bottom wear-resistant plate. The positioning hole provides a positioning block assembly. At least one third elastic element is provided at the bottom of the positioning block. After the positioning block passes through the positioning hole of the bottom wear-resistant plate, it is locked in the slider seat groove at the bottom of the slider seat.

[0018] Preferably, the first-shot inclined guide post fixing block and the second-shot inclined guide post fixing block are respectively locked in the first-shot female mold and the second-shot female mold by screws.

[0019] Preferably, one end of the inclined guide post is provided with a cap, and the end of the inclined guide post away from the cap is dome-shaped.

[0020] Preferably, the fixing block is locked onto the slider seat by screws.

[0021] Preferably, the bouncing block is movably mounted on the fixed block via a first elastic element.

[0022] Preferably, the locking slider is L-shaped and is used by the pressure plate to press down on one side of the locking slider.

[0023] Preferably, the locking slider is pressed down on one side by a pressure plate and is movably disposed within the slider seat.

[0024] Preferably, the pressure plate is fixed to the slider seat by screws.

[0025] Preferably, a slider clamping block is provided adjacent to the slider seat and located at the position of the male mold.

[0026] Preferably, the top of the positioning block is inverted "V" shape.

[0027] Preferably, the number of the third elastic elements of the positioning block is one pair.

[0028] Preferably, the first elastic element, the second elastic element, and the third elastic element are springs.

[0029] The beneficial effect of this invention is that when the two-color mold slider exit mechanism is in its initial state, the movable slider is in a closed state, and the spring block locks the movable slider groove through the spring block groove, thus preventing the slider from retracting. When the spring block is pressed down by the first-shot inclined guide post fixing block, the spring block groove and the movable slider groove are in a relative state, and the spring block groove no longer locks the movable slider. The movable slider moves under the action of the first inclined guide post (at this time, the first inclined guide post has been inserted into the center hole of the movable slider), and the slider remains stationary under the fixation of the inverted "V" shaped positioning block. During the second shot, the movable slider resets under the action of the clamping block, and the locking slider no longer locks the spring block. The spring block is pushed out into the third groove of the second-shot inclined guide post fixing block under the action of the first elastic element. The spring block groove locks the movable slider groove, so when the movable slider moves, it will drive the slider to move by moving the spring block, thus completing the second-shot mold opening. This invention employs a different principle from traditional two-color injection molding machines, making the mechanism simpler and smaller in size compared to the complex mechanisms in traditional two-color molds. This results in a smaller mold and reduces the unit cost of both the mold and the product. [Attached Image Description]

[0030] Figure 1 This is a schematic diagram of a well-known two-color injection molding machine.

[0031] Figure 2 This is a schematic diagram of the combined structure of the present invention (I).

[0032] Figure 3 This is a schematic diagram (II) of the combined structure of the present invention.

[0033] Figure 4 This is a schematic diagram of the slider seat structure of the slider mechanism of the present invention.

[0034] Figure 5 This is a schematic cross-sectional view of the injection molding process of the present invention.

[0035] Figure 6 This is a schematic cross-sectional view of the two-shot mold closing mechanism of the present invention.

[0036] Figure 7 This is a schematic diagram of the slider mechanism of the present invention, showing the oblique guide post inserted into the movable slider.

[0037] Figure 8 yes Figure 7 Another perspective diagram.

[0038] Explanation of key component symbols:

[0039] Master mold 20

[0040] One shot, mother mold 21

[0041] One-shot inclined guide post fixing block 101

[0042] First inclined guide post 102

[0043] First groove 103

[0044] Two-shot master mold 22

[0045] Diffusion-guide-post fixing block 111

[0046] Second inclined guide post 112

[0047] Second groove 113

[0048] Third groove 114

[0049] Incline 115

[0050] Male model 30

[0051] Bouncing Block 121

[0052] First elastic element 122

[0053] Fixed block 123

[0054] Bouncing block groove 124

[0055] 125-inch concave edge of bouncing block

[0056] Active slider 131

[0057] Center hole 132

[0058] Positioning elastic element 133

[0059] Active slider groove 134

[0060] Slot slider 141

[0061] 142 protruding ribs of the slot slider

[0062] Second elastic element 143

[0063] Pressure plate 144

[0064] Slider base 151

[0065] Guide groove 152

[0066] Slider seat groove 153

[0067] Bottom wear plate 161

[0068] Positioning hole 162

[0069] Positioning block 163

[0070] Third elastic element 164

[0071] Screw 171

[0072] Cap 172

[0073] 173 tightening block

Detailed Implementation Methods

[0074] To further illustrate the technical means and effects of the present invention, the following detailed description is provided in conjunction with the embodiments of the present invention and their accompanying drawings.

[0075] This invention provides a two-color mold slider ejection mechanism, comprising:

[0076] The master mold 20 is provided with a first-shot master mold 21 and a second-shot master mold 22 in the mold, wherein;

[0077] A first injection mold 21 is provided, and a first injection inclined guide post fixing block 101 is fixed in the first injection mold 21. The first injection inclined guide post fixing block 101 is provided with a first inclined guide post 102. The first inclined guide post 102 is fixed in the first injection mold 21 by the first injection inclined guide post fixing block 101. The first injection inclined guide post fixing block 101 is provided with a first groove 103. In this embodiment, as shown... Figure 5 As shown, the first groove 103 is used to avoid and block the slider 141 during mold closing;

[0078] The second-shot die 22 is fixed with a second-shot inclined guide post fixing block 111. The second-shot inclined guide post fixing block 111 has a second inclined guide post 112, which is fixed within the die 22. The second-shot inclined guide post 112 has a second groove 113 and a third groove 114. In this embodiment, as shown... Figure 6 As shown, the inclined surface 115 of the second groove 113 is used to push the locking slider 141 to move during the two-shot mold closing. After the locking slider 141 moves, it no longer locks the spring block 121. Under the action of the first elastic element 122, the spring block 121 springs into the third groove 114.

[0079] The male mold 30 is provided with a slider mechanism, which includes a spring block 121, a movable slider 131, a locking slider 141, a slider seat 151, and a bottom wear-resistant plate 161.

[0080] A bouncing block 121 is provided, one side of which is connected to a first elastic element 122. The first elastic element 122 is fixed on a fixed block 123. The bouncing block 121 has a bouncing block groove 124 on the side with the movable slider 131, as shown in this embodiment. Figure 8 As shown, during the first injection mold opening, the movable slider 131 passes through the spring block groove 124, and the spring block 121 has a spring block recess 125 on the side with the locking slider 141.

[0081] A movable slider 131 has a central hole 132 at its center. A positioning elastic element 133 is provided on one side of the movable slider 131. The positioning elastic element 133 is used to position the movable slider 131 after the first injection molding process, preventing the second inclined guide post 112 from failing to insert into the central hole 132 of the movable slider 131 during the second injection molding process. The movable slider 131 has a movable slider groove 134 on the side with the spring block 121, as shown in this embodiment. Figure 7 As shown, the movable slider groove 134 moves and is locked in the spring block groove 124 during the second injection mold opening;

[0082] The locking slider 141 has a locking slider protrusion 142 at one end with the spring block 121, and a second elastic element 143 at one end for controlling the movement of the locking slider 141. A pressure plate 144 is provided at one end of the locking slider 141, and the pressure plate 144 presses the locking slider 141 with its bottom surface to ensure that the locking slider 141 is displaced in the direction of the force under the action of the second elastic element 143.

[0083] The slider seat 151 is provided with a guide groove 152 and a slider seat groove 153 is provided at the bottom of the slider seat;

[0084] A bottom wear-resistant plate 161 is provided at the bottom of the slider seat 151. A positioning hole 162 is provided in the bottom wear-resistant plate 161. The positioning hole provides a positioning block 163. At least one third elastic member 164 is provided at the bottom of the positioning block 163. After the positioning block 163 passes through the positioning hole 162 of the bottom wear-resistant plate 161, it is locked in the slider seat groove 153 at the bottom of the slider seat 151.

[0085] The first-shot inclined guide post fixing block 101 and the second-shot inclined guide post fixing block 111 are respectively locked in the first-shot female mold 21 and the second-shot female mold 22 by screws 171.

[0086] The inclined guide posts 102 and 112 are provided with caps 172 at one end, while the ends of the inclined guide posts 102 and 103 away from the caps 172 are dome-shaped.

[0087] The fixing block 123 is locked to the slider seat 151 by screws 171.

[0088] The bouncing block 121 is movably mounted on the fixed block 123 via the first elastic element 122.

[0089] The locking slider 141 is L-shaped and is used by the pressure plate 144 to press down on one side of the locking slider 141.

[0090] The locking slider 141 is pressed against one side by the bottom surface of the pressure plate 144 and is movably disposed in the slider seat 151.

[0091] The pressure plate 144 is fixed to the slider seat 151 by screws 171.

[0092] A slider clamping block 173 is located adjacent to the slider seat 151 and at the position of the male mold 30.

[0093] The top of the positioning block 163 is inverted "V" shape.

[0094] The number of the third elastic members 164 of the positioning block 163 is one pair.

[0095] Among them, the first elastic element 122, the second elastic element 143, and the third elastic element 164 are springs.

[0096] The working process of this invention is as follows: Please refer to... Figures 2 to 8 The biggest difference between the first and second shots is that the inclined guide post fixing blocks 101 and 111 are different, such as... Figure 5As shown, during the first injection molding process, the first injection inclined guide post fixing block 101 and the slider 141 are in a cleared state; as Figure 6 As shown, during the two-shot mold closing process, the position of the second-shot inclined guide post fixing block 111 and the locking slider 141 is on the inclined surface 115 and has a third groove 114 for the ejection of the spring block 121. When the first-shot mold closing process occurs, the first-shot inclined guide post fixing block 101 presses down on the spring block 121. Since the locking slider 141 is in a free state, when the spring block 121 is pressed down and closed into place by the first-shot inclined guide post fixing block 101, the locking slider 141 will lock the spring block 121 from the top surface. When the mold opens, the first inclined guide post 102 moves the movable slider 131, which will pass through the spring block groove 124 without moving the slider. Thus, the first-shot slider will not open the mold. When the two-shot mold closing process occurs, the second-shot inclined guide post... The inclined surface 115 of the fixed block 111 pushes the locking slider 141 to move. The locking slider 141 no longer locks the spring block 121. Under the action of the first elastic element 122, the spring block 121 will pop up into the third groove 114 of the two-shot inclined guide post fixed block 111. When the mold is opened, the spring block groove 124 is in the popped-out state, which will block the movable slider 131. In this way, when the movable slider 131 moves, it will drive the slider to move by pushing the spring block 121, thus completing the two-shot slider mold opening.

[0097] The beneficial effects of this invention are as follows, please refer to [link / reference]. Figures 2 to 8 When the two-color mold slider exit mechanism is in its initial state, the movable slider 131 is in a closed state. The spring block 121 locks the movable slider groove 134 through the spring block groove 125, thus locking the movable slider 131, so the slider will not move backward. When the first shot inclined guide post fixing block 101 presses down on the spring block 121, the spring block groove 124 and the movable slider groove 134 are in a relative state. The spring block groove 124 no longer holds the movable slider 131, and the movable slider 131 moves under the action of the first inclined guide post 102 (at this time, the first inclined guide post 102 has been inserted into the center hole 132 of the movable slider). The slider is fixed by the inverted "V" shaped positioning block 163. During the second shot, the movable slider 131 is reset under the action of the clamping block 173, and the locking slider 141 no longer holds the spring block 121. The spring block 121 is pushed out into the third groove 114 of the second shot inclined guide post fixing block 111 by the force of the first elastic element 122. The spring block groove 124 holds the movable slider groove 134. In this way, when the movable slider 131 moves, it will drive the slider to move by pushing the spring block 121, thus completing the second shot mold opening. This invention employs a different principle from traditional two-color injection molding machines, making the mechanism simpler and smaller in size compared to the complex mechanisms in traditional two-color molds. This results in a smaller mold and reduces the unit cost of both the mold and the product.

[0098] It should be noted that the present invention is not limited to the above embodiments. Any simple modifications, equivalent changes and alterations made by those skilled in the art to the above embodiments based on the technical solutions of the present invention shall fall within the protection scope of the present invention.

Claims

1. A two-color mold slider ejection mechanism, characterized in that, include: The master mold, wherein the master mold is provided with a first injection master mold and a second injection master mold in the mold, wherein; A first injection mold and a first injection inclined guide post fixing block are fixed in the first injection mold. The first injection inclined guide post fixing block is provided with a first inclined guide post. The first inclined guide post is fixed in the first injection mold by the first injection inclined guide post fixing block. The first injection inclined guide post fixing block is provided with a first groove. The two-shot master mold has a two-shot inclined guide post fixing block fixed in it. The two-shot inclined guide post fixing block has a second inclined guide post, which is fixed in the two-shot master mold by the two-shot inclined guide post fixing block. The two-shot inclined guide post fixing block has a second groove and a third groove. The mold includes a slider mechanism, which comprises a spring block, a movable slider, a locking slider, a slider seat, and a bottom wear-resistant plate. A bouncing block, one side of which is connected to a first elastic element, the first elastic element being fixed on a fixed block, the fixed block being locked on a slider seat by screws, the bouncing block having a bouncing block groove on the side with a movable slider, and a bouncing block concave ridge on the side with a locking slider. The movable slider has a central hole in its center and a positioning elastic element on one side. The positioning elastic element is used to position the movable slider after the first injection mold opening to prevent the second injection inclined guide post from not being able to pass through the central hole of the movable slider when the second injection mold is closed. The movable slider has a movable slider groove on the side with the spring block. The locking slider has a locking slider protrusion at one end with a spring block, a second elastic element at one end of the locking slider for controlling the movement of the locking slider, and a pressure plate at one end of the locking slider. The pressure plate presses the locking slider down through its bottom surface to ensure that the locking slider moves in the direction of the force under the action of the second elastic element. A slider seat, wherein the slider seat is provided with a guide groove and the bottom of the slider seat is provided with a slider seat groove; A bottom wear-resistant plate is provided at the bottom of the slider seat. A positioning hole is provided in the bottom wear-resistant plate. The positioning hole provides a positioning block assembly. At least one third elastic element is provided at the bottom of the positioning block. After the positioning block passes through the positioning hole of the bottom wear-resistant plate, it is locked in the slider seat groove at the bottom of the slider seat. During the first shot, the first groove is used to avoid the locking slider when the mold is closed. The locking slider will lock the spring block from the top surface, and the groove of the spring block will no longer lock the movable slider. During the second injection, the inclined surface of the second groove is used to push the locking slider to move when the mold is closed. After the locking slider moves, it no longer locks the bouncing block. Under the force of the first elastic element, the bouncing block bounces into the third groove, and the bouncing block groove blocks the movable slider.

2. The two-color mold slider withdrawal mechanism as described in claim 1, characterized in that: The first-shot inclined guide post fixing block and the second-shot inclined guide post fixing block are respectively locked in the first-shot female mold and the second-shot female mold by screws.

3. The two-color mold slider withdrawal mechanism as described in claim 1, characterized in that: The first and second inclined guide posts are provided with caps at one end, and the ends of the first and second inclined guide posts away from the caps are dome-shaped.

4. The two-color mold slider withdrawal mechanism as described in claim 1, characterized in that: The bouncing block is movably mounted on the fixed block via a first elastic element.

5. The two-color mold slider withdrawal mechanism as described in claim 1, characterized in that: The locking slider is L-shaped and is used by the pressure plate to press down on one side of the locking slider.

6. The two-color mold slider withdrawal mechanism as described in claim 5, characterized in that: The locking slider is pressed down on one side by a pressure plate and is movably disposed within the slider seat.

7. The two-color mold slider withdrawal mechanism as described in claim 1, characterized in that: The pressure plate is fixed to the slider seat by screws.

8. The two-color mold slider withdrawal mechanism as described in claim 1, characterized in that: A slider clamping block is located adjacent to the slider seat and at the position of the male mold.

9. The two-color mold slider withdrawal mechanism as described in claim 1, characterized in that: The top of the positioning block is inverted "V" shape.

10. The two-color mold slider withdrawal mechanism as described in claim 1, characterized in that: The number of the third elastic elements of the positioning block is one pair.

11. The two-color mold slider withdrawal mechanism as described in claim 1, characterized in that: The first elastic element, the second elastic element, and the third elastic element are springs.

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