Mold sticking prevention core-pulling assembly

Abstract

The utility model discloses an anti-sticking mold core-pulling assembly. The anti-sticking mold core-pulling assembly comprises a forming block, a second sliding rail, a positioning ejector pin and a second sliding block, the forming block is connected with the second sliding block and synchronously performs core-pulling displacement, and the second sliding block is mounted on the second sliding rail in a sliding manner to realize core-pulling displacement; the positioning ejector pin can penetrate through the forming block to abut against a product and is fixedly installed through a positioning piece. The forming block and the second sliding block synchronously perform core-pulling displacement, the positioning ejector pin abuts against the product so as to be matched with the forming block to be separated from the surface of the product, and core-pulling operation is completed. According to the technical scheme, the positioning ejector pin is used for abutting against the product, and therefore the technical problem that in the core-pulling separation process of the dense through hole type injection molding product, core-pulling strain is caused by mold sticking is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to core pulling mechanism technical field of injection mold especially is related to a kind of anti-sticking mold core pulling assembly. BACKGROUND

[0002] The surface of most products is designed with dense through holes to pass air between the inside and outside of the product, achieving air intake or exhaust. During one-time injection molding, the dense through holes have the characteristics of small area, multiple through holes and dense distribution, and the thickness of such products is often thin. During the core pulling process of one-time injection molding, the molding block and the product are prone to sticking. Based on the above situation, continuous core pulling separation is prone to product core pulling damage.

[0003] In summary, how to solve the technical problem of core pulling damage during the core pulling process of dense through holes is one of the technical problems that need to be solved by technicians in the field. INVENTION CONTENTS

[0004] To solve the technical problems existing in the prior art, the purpose of the utility model is to provide an anti-sticking mold core pulling assembly.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An anti-sticking mold core pulling assembly includes a molding block, a second sliding rail, a positioning pin, and a second sliding block, wherein:

[0007] The molding block and the second sliding block are synchronously displaced, the second sliding block is slidingly installed on the second sliding rail to achieve core pulling displacement, and the positioning pin is fixedly installed through a positioning member and abuts against the product through the molding block.

[0008] The molding block and the second sliding block are synchronously displaced, the positioning pin abuts against the product to separate the molding block from the surface of the product, and the core pulling operation is completed.

[0009] Further preferably, the second sliding block is provided with a linkage sliding block, the molding block is embedded in the end of the linkage sliding block, and the linkage sliding block is synchronously slidingly displaced with the second sliding block and the molding block.

[0010] The linkage sliding block is provided with an ejection cavity, and the positioning pin is assembled in the ejection cavity.

[0011] Further preferably, the linkage sliding block includes a linkage sliding seat and a linkage sliding body, wherein:

[0012] The linkage sliding seat is connected with the second sliding block and synchronously slides with the second sliding block.

[0013] The linkage sliding seat is provided with the ejection cavity.

[0014] The linkage sliding body is buckled on the linkage sliding seat, and the forming block is embedded in the linkage sliding body.

[0015] Further preferably, the dense protrusions of the forming block protrude from the linkage sliding block.

[0016] Further preferably, the positioning thimbles are fixed on a positioning thimble plate group, and the positioning thimble plate group is fixedly connected with a positioning member;

[0017] The positioning thimble plate group is movably installed in the ejection cavity;

[0018] The second sliding block, the linkage sliding block and the forming block are synchronously moved, and cooperate with the relatively fixed positioning thimble plate group and the positioning thimbles, so that the forming block is separated from the product surface, and the core pulling operation is completed.

[0019] Further preferably, the positioning member is connected with the positioning thimble plate group.

[0020] Further preferably, the positioning member comprises a positioning rod and a positioning seat, the positioning seat is embedded in an embedding groove of the second sliding rail, and the positioning rod is connected with the positioning seat.

[0021] Further preferably, the two positioning rods are fixed on two sides of the positioning thimble plate group respectively.

[0022] The two positioning rods are fixedly connected with the same positioning seat.

[0023] After the above technical scheme is adopted, the present application has the following advantages compared with the background art:

[0024] In the present application, the positioning thimbles are assembled in the anti-sticking mold core pulling assembly, the positioning thimbles are relatively displaced with the forming block, when the forming block is moved, the positioning thimbles abut against the product, and the product is abutted by the positioning thimbles in the separation process of the forming block and the product, so that the technical problem that the core pulling is damaged due to sticking mold in the core pulling and separation process of the dense through-hole type injection molded product is solved. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a structure perspective view of the anti-sticking mold core pulling assembly in the embodiment of the present application;

[0026] Figure 2 is Figure 1 the front view of the structure;

[0027] Figure 3 is a structure sectional view of the anti-sticking mold core pulling assembly in the embodiment of the present application;

[0028] Figure 4It is the structure perspective view of the composite core-pulling forming mechanism in the embodiment of the utility model.

[0029] Figure 5 It is the structure perspective view of the composite core-pulling forming mechanism in the embodiment of the utility model. Figure 4 It is the structure perspective view of the composite core-pulling forming mechanism in the embodiment of the utility model.

[0030] Figure 6 It is the structure perspective view of the composite core-pulling forming mechanism in the embodiment of the utility model.

[0031] The mark of the above specification drawing is explained as follows:

[0032] 100 - core-pulling assembly, 110 - first slider, 120 - shovel, 130 - elastic block, 140 - screw, 150 - spring,

[0033] 200 - anti-sticking mold core-pulling assembly, 210 - linkage slider, 211 - linkage slide, 212 - linkage slide body, 220 - positioning thimble group, 221 - positioning thimble plate group, 222 - positioning thimble, 230 - forming block, 240 - positioning piece, 241 - positioning rod, 242 - positioning seat, 250 - driving piece, 260 - second slider, 270 - second slide rail. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the utility model is further described in detail below by combining with the drawings and examples. It should be understood that the specific examples described here are only used to explain the utility model, and are not used to limit the utility model.

[0035] It should be noted in the utility model that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like are based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the utility model and simplify the description, and are not indicative or suggestive of the device or element of the utility model must have a specific orientation, therefore, it cannot be understood as a limitation on the utility model.

[0036] EMBODIMENT

[0037] In order to solve the sticking phenomenon of dense through holes in the core-pulling forming process, thereby causing the technical problem of product tearing. Therefore, the inventor of the technical scheme has developed an anti-sticking mold core-pulling assembly to solve the above structural problems.

[0038] As Figure 1 , Figure 2 and Figure 3As shown, the anti-sticking mold core-pulling assembly 200 is the main structure for realizing the dense through-hole core-pulling forming processing, which comprises a linkage sliding block 210, a second sliding block 260, a driving member 250, a second sliding rail 270, and a positioning pin group 220; the second sliding block 260 is assembled on the second sliding rail 270 and can reciprocatingly slide and displace on the second sliding rail 270 to realize sliding core-pulling and sliding reset; the linkage sliding block 210 is connected with the second sliding block 260 and synchronously slides and displaces; the positioning pin group 220 is assembled in the linkage sliding block 210 and can slide and displace in the linkage sliding block 210, in other words, the linkage sliding block 210 and the positioning pin group 220 are designed to have a relative motion relationship, and the effect realized by this structure design is that when the positioning pin group 220 is relatively fixed and immobile, the linkage sliding block 210 slides and displaces relative to the positioning pin group 220; based on the above structure design, when the linkage sliding block 210 assembled with a forming block 230 is driven by the driving member 250 to perform core-pulling displacement, the positioning pin group 220 can be relatively fixed and abut against the surface of the formed product, thereby effectively solving the technical problem of core-pulling damage caused by mold sticking.

[0039] To realize the above functions, the positioning pin group 220 is relatively fixed by a positioning member 240, and the specific structure is shown in Figure 1 、 Figure 2 and Figure 3 As shown, the positioning pin group 220 comprises a positioning pin plate group 221 and a positioning pin 222, the positioning pin 222 is fixedly installed on the pin plate group 221, the positioning pin 222 passes through the forming block 230 and can abut against the product after injection molding to position the product and effectively avoid core-pulling damage. The positioning member 240 comprises a positioning rod 241 and a positioning seat 242, the positioning seat 242 is fixedly connected with the second sliding rail 270, and the positioning seat 242 is connected with the positioning pin plate group 221 through the positioning rod 241, thereby realizing the relative motion relationship between the positioning pin group 220 and the linkage sliding block 210.

[0040] In detail, as shown in Figure 1 、 Figure 2 and Figure 3As shown, when the driving member 250 drives the linkage sliding block 210 to slide core pulling through the second sliding block 260, the positioning seat 242 is fixed on the second sliding rail 270 which is in relative sliding displacement relationship with the second sliding block 260, the positioning pin plate set 221 is fixedly connected with the positioning seat 242 through the positioning rod 241, and is also relatively fixed, and at this time the positioning pin 222 is also relatively fixed; the linkage sliding block 210 which performs core pulling sliding displacement forms a relative motion relationship with the positioning pin set 220, and during the process that the linkage sliding block 210 drives the forming block 230 to pull core and demold, the positioning pin set 220 abuts against the product, thereby effectively solving the technical problem of core pulling damage caused by the integral core pulling of the forming block 230.

[0041] As shown in Figure 1 , Figure 2 and Figure 3 , the linkage sliding block 210 provides a certain relative sliding displacement space for the positioning pin set 220, and in structure, the linkage sliding block 210 is connected by the linkage sliding seat 211 and the linkage sliding body 212. Specifically, the linkage sliding seat 211 is connected with the second sliding block 260 and is driven by the second sliding block 260 to perform synchronous sliding displacement, and the linkage sliding seat 211 is a hollow body, and the side surface away from the second sliding block 260 is an open surface; the linkage sliding body 212 is a through body, which is buckled at the open surface of the linkage sliding seat 211, and is embedded in the forming block 230 away from the open surface of the linkage sliding seat 211, and the forming block 230 is provided with dense protrusions in the direction of the product forming cavity of the mold, which is used for dense hole forming, and the dense protrusions protrude from the linkage sliding block 210. A ejection hole is formed in the forming block 230 to allow the positioning pin 222 to be ejected. In this embodiment, the second sliding block 260 is designed with a slope away from the driving member 250, and the linkage sliding seat 211 is fixed on the slope to match the position of the product forming cavity of the mold.

[0042] As shown in Figure 1 , Figure 2 and Figure 3 , the positioning pin plate set 221 includes a positioning pin bottom plate and a positioning pin face plate which are fixedly connected with each other and synchronously displaced, and the positioning pin 222 is fixed on the positioning pin bottom plate and passes through the positioning pin face plate, and the positioning pin 222 is arranged in the ejection hole and passes through the ejection hole to realize that the positioning pin 222 can abut against the product during the core pulling operation of the linkage sliding block 210 driving the forming block 230, thereby effectively preventing the product from being damaged during the core pulling and demolding process.

[0043] It should be noted that, as shown in Figure 3As shown, the positioning through holes are arranged in accordance with the distribution of the positioning pins 222, two or more positioning through holes are arranged between adjacent positioning protrusions, and the positioning pins 222 abut against the connection between the adjacent dense through holes.

[0044] As shown in Figure 4 , Figure 5 and Figure 6 , the core pulling assembly 100 and the anti-sticking mold core pulling assembly 200 are designed, and the core pulling assembly 100 is arranged on the anti-sticking mold core pulling assembly 200 to limit the sliding core pulling movement of the second core pulling mechanism. Specifically, the elastic block 130 in the first core pulling mechanism is used to block the core pulling movement of the second sliding block 260 of the anti-sticking mold core pulling assembly 200 in the un-driven state. In other words, only after the elastic block 130 is driven to move away from the second sliding block 260, the second sliding block 260 can be driven to perform the core pulling forming movement. The arrangement of the structure is used to determine the movement sequence between the core pulling assembly 100 and the anti-sticking mold core pulling assembly 200.

[0045] As shown in Figure 4 , the core pulling assembly 100 includes the first sliding block 110 and the elastic block 130. The first sliding block 110 limits the core pulling sliding displacement of the second sliding block 260 along the second sliding rail 270 through the elastic block 130. That is, the elastic block 130 blocks the second sliding block 260 to accurately position the second sliding block 260. Specifically, as shown in Figure 4 , the first sliding block 110 is located above the second sliding block 260, and the first sliding block 110 is inserted with the shovel 120. The lower part of the shovel 120 is connected and linked with the elastic block 130 through the hook, and one end of the elastic block 130 abuts against the second sliding block 260, thereby limiting the sliding displacement of the second sliding block 260.

[0046] Based on the above structure, as shown in Figure 4 , the first sliding block 110 is connected with the shovel 120 in cooperation. The mold opening action drives the shovel 120 to displace upward, thereby driving the first sliding block 110 to perform the sliding core pulling displacement. At the same time, the driven shovel 120 pulls the elastic block 130 through the hook, and the shovel 120 and the elastic block 130 are synchronously displaced upward. When the elastic block 130 completely separates from the second sliding block 260 and the second sliding block 260 is in the un-limited state, the second sliding block 260 can be driven by the driven part 250 to perform the core pulling displacement.

[0047] As shown in Figure 4To ensure that the shovel 120 can effectively drive the spring block 130 to move up synchronously, a screw 140 is assembled on the second sliding block 260, and the spring 150 is sleeved on the screw 140; one end of the spring block 130 close to the second sliding block 260 is pressed on the screw 140. Based on the above structure, in the state that the combined core-pulling forming mechanism is not started to pull the core, the spring block 130 in the static state is pressed on the screw 140, and the spring 150 sleeved on the screw 140 is in a compressed energy storage state; after the core-pulling action is started, the upward shovel 120 drives the spring block 130 through the drag hook, and the compressed spring 150 releases the ability, synchronously pushing the spring block 130 to move up synchronously. In other words: in order to ensure that the spring block 130 can effectively move up away from the second spring block 130, two forces act on the spring block 130, one force is the pulling force of the shovel 120, and the other force is the elastic pushing force of the screw 140 sleeved with the spring 150.

[0048] In summary, combined with Figures 1 to 4 As shown in the figure, the action principle of the combined core-pulling forming mechanism is as follows:

[0049] Action one: the core-pulling assembly 100 moves;

[0050] The mold opening action drives the shovel 120, and the driven shovel 120 can also pull the spring block 130 through the drag hook while driving the first sliding block 110 to move; at the same time, the compressed spring 150 drives the screw 140 to push the spring block 130 to move synchronously with the shovel 120, thereby moving away from the second sliding block 260, so as to release the second sliding block 260;

[0051] Action two: the anti-sticking mold core-pulling assembly 200 moves;

[0052] The driving part 250 drives the released second sliding block 260 to move in the direction of the second sliding rail 270, and the sliding displacement of the second sliding block 260 drives the linkage sliding block 210 and the forming block 230 to move synchronously; at this time, the positioning pin group 220 in the linkage sliding block 210 is relatively fixed through the positioning part 240, that is, the relative displacement state is formed between the positioning pin group 220 and the linkage sliding block 210, the linkage sliding block 210 slides, and the positioning pin group 220 is relatively fixed; the linkage sliding block 210 that moves in the core-pulling sliding displacement state forms a relative motion relationship with the positioning pin group 220, and the positioning pin 222 in the positioning pin group 220 abuts against the product during the process that the linkage sliding block 210 drives the forming block 230 to core-pull and demold, thereby solving the technical problem of core-pulling damage caused by the integral core-pulling of the forming block 230.

[0053] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An anti-stick mold core pulling assembly characterized by: Including a forming block, a second sliding rail, a positioning pin and a second sliding block, wherein: The forming block and the second sliding block are synchronously displaced, the second sliding block is slidingly installed on the second sliding rail to realize core-pulling displacement; the positioning pin can be in contact with the product through the forming block and is fixedly installed through a positioning member; The forming block and the second sliding block are synchronously displaced, the positioning pin is in contact with the product to separate the forming block from the surface of the product, and the core-pulling operation is completed.

2. The anti-stick mold core pulling assembly of claim 1, wherein: The second sliding block is provided with a linkage sliding block, the forming block is embedded in the end of the linkage sliding block, and the linkage sliding block is synchronously slidingly displaced with the second sliding block and the forming block; The linkage sliding block is provided with an ejection cavity, and the positioning pin is assembled in the ejection cavity.

3. The anti-stick mold core pulling assembly of claim 2, wherein: The linkage sliding block comprises a linkage sliding seat and a linkage sliding body, wherein: The linkage sliding seat is connected with the second sliding block and synchronously slides with the second sliding block; The linkage sliding seat is provided with the ejection cavity; The linkage sliding body is buckled on the linkage sliding seat, and the forming block is embedded in the linkage sliding body.

4. The anti-stick mold core pulling assembly of claim 2 or 3, wherein: The dense protrusions of the forming block protrude from the linkage sliding block.

5. The anti-stick mold core pulling assembly of claim 2 or 3, wherein: The positioning pin is fixed on a positioning pin plate group, and the positioning pin plate group is fixedly connected with the positioning member; The positioning pin plate group is movably installed in the ejection cavity; The second sliding block, the linkage sliding block and the forming block which are synchronously displaced, and the positioning pin plate group and the positioning pin which are relatively fixed, are cooperated to separate the forming block from the surface of the product and complete the core-pulling operation.

6. The anti-stick mold core pulling assembly of claim 5, wherein: The positioning member is connected with the positioning pin plate group.

7. The anti-stick mold core pulling assembly of claim 6, wherein: The positioning member comprises a positioning rod and a positioning seat, the positioning seat is embedded in an embedded groove of the second sliding rail, and the positioning rod is connected with the positioning seat.

8. The anti-stick mold core pulling assembly of claim 7, wherein: Two positioning rods are fixed on both sides of the positioning pin plate group, respectively; The two positioning rods are fixedly connected with the same positioning seat.

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