Core-pulling control structure

Abstract

The utility model discloses a core-pulling control structure which comprises a first core-pulling assembly and a second core-pulling assembly, and the first core-pulling assembly and the second core-pulling assembly are arranged adjacently. The first core-pulling assembly comprises a first sliding block, a shoveling machine and an elastic block, and the second core-pulling assembly comprises a second sliding block; the shoveling machine penetrates through the first sliding block to be connected with the elastic block, and the elastic block abuts against the second sliding block and is used for controlling the first core pulling assembly to conduct core pulling movement earlier than the second core pulling assembly. The first core-pulling assembly and the second core-pulling assembly are designed, and the first core-pulling assembly limits the second core-pulling assembly to perform core-pulling operation through the elastic block so as to control the core-pulling motion of the first core-pulling assembly to be earlier than the core-pulling motion of the second core-pulling assembly.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection mold field especially, it is a kind of core-pulling control structure. BACKGROUND

[0002] Injection mold with core-pulling mechanism is mainly designed for the design through-hole or groove structure forming processing on product, to achieve the purpose of one-time injection molding processing of product, to improve processing efficiency, reduce processing cost.

[0003] The adjacent through-hole or groove structure is designed on plastic product due to the need of function etc., which is a very common situation in product structure design, and the through-hole or groove arranged on the same side and adjacent can share the same core-pulling mechanism for forming processing, but if the adjacent through-hole or groove is placed on different sides and the adjacent distance is small, it will cause the slider of synchronous core-pulling forming to hit the mold.

[0004] In summary, how to solve the technical problem of core-pulling mold hitting of adjacent through-hole or groove structure on different sides in the prior art is one of the technical problems to be solved by the skilled in the art. INVENTION CONTENTS

[0005] To solve the technical problems existing in the prior art, the purpose of the utility model is to provide a core-pulling control structure.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0007] A core-pulling control structure includes a first core-pulling assembly and a second core-pulling assembly, wherein:

[0008] The first core-pulling assembly and the second core-pulling assembly are arranged adjacent to each other;

[0009] The first core-pulling assembly includes a first slider, a shovel and a spring block, and the second core-pulling assembly includes a second slider;

[0010] The shovel is connected to the spring block through the first slider, and the spring block presses the second slider to control the first core-pulling assembly to perform core-pulling movement before the second core-pulling assembly.

[0011] Further preferably, the shovel is provided with a drag hook, and the drag hook is connected to the second slider;

[0012] The shovel driven to displace pulls the second slider to displace through the drag hook.

[0013] Further preferably, the second slider is provided with an elastic member;

[0014] The shovel presses the elastic member, and the elastic member can elastically push the spring block to displace.

[0015] Further preferably, the second sliding block is connected with the driving member and is driven to slide by the driving member.

[0016] Further preferably, the second sliding block is provided with a limiting slope at one end of the driving member, and the elastic member is arranged at a low position of the limiting slope.

[0017] Further preferably, the second sliding block is provided with a linkage sliding block, and an end of the linkage sliding block is embedded with a formed block.

[0018] The second sliding rail is slidably connected with the second sliding block, and the second sliding block is synchronously slid with the linkage sliding block and the formed block along the direction of the second sliding rail.

[0019] The linkage sliding block is provided with an ejection cavity, and a positioning ejector pin is arranged in the ejection cavity.

[0020] Further preferably, the second core-pulling assembly is further provided with a positioning ejection group, and the positioning ejection group comprises the positioning ejector pin.

[0021] The positioning ejector pin is fixedly arranged by a positioning member and can pass through the formed block to press the product.

[0022] Further preferably, the positioning ejector pin is fixed on a positioning ejector pin plate group, and the positioning ejector pin plate group is fixedly connected with the positioning member.

[0023] The positioning ejector pin plate group is movably arranged in the ejection cavity.

[0024] The second sliding block, the linkage sliding block and the formed block which are synchronously moved, and the positioning ejector pin plate group and the positioning ejector pin which are relatively fixed, are cooperated to realize the separation of the formed block and the product surface and complete the core-pulling operation.

[0025] Further preferably, 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.

[0026] Compared with the background art, the present application has the following advantages:

[0027] 1. The first core-pulling assembly and the second core-pulling assembly are designed in the present application, and the second core-pulling assembly is limited to perform the core-pulling operation by the elastic block, so as to control that the core-pulling movement of the first core-pulling assembly is prior to the core-pulling movement of the second core-pulling assembly.

[0028] 2. The positioning ejector pin is further arranged in the second core-pulling assembly in the present application, and the positioning ejector pin which presses the product is relatively displaced with the formed block which is moved, so as to press the product by the positioning ejector pin at the structure of the dense through hole of the product, and avoid the technical problem that the core-pulling is damaged due to the mold sticking. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is a structure perspective view of the composite core-pulling forming mechanism described in the embodiments of the present application;

[0030] Figure 2 is Figure 1 the front view of the structure shown;

[0031] Figure 3 is Figure 2 the top view of the structure shown;

[0032] Figure 4 is a structure sectional view of the composite core-pulling forming mechanism described in the embodiments of the present application.

[0033] The mark of the above specification drawing is explained as follows:

[0034] 100-first core-pulling assembly; 110-first sliding block; 120-shovel; 130-spring block; 131-pull hook; 140-screw; 150-spring;

[0035] 200-second core-pulling assembly; 210-linked sliding block; 211-linked sliding seat; 212-linked sliding body; 220-positioning thimble group; 221-positioning thimble plate group; 222-positioning thimble; 230-forming block; 240-positioning member; 241-positioning rod; 242-positioning seat; 250-driving member; 260-second sliding block; 261-limiting slope; 270-second sliding rail. DETAILED DESCRIPTION

[0036] If the adjacent through holes or grooves are placed on different sides and the adjacent distance is small, the synchronous core-pulling forming sliding block may collide with the mold. To solve the above technical problem, the inventor of the present technical solution has developed a core-pulling control structure, which comprises a first core-pulling assembly and a second core-pulling assembly, and the first core-pulling assembly limits the core-pulling operation of the second core-pulling assembly through a spring block, so as to control the core-pulling movement of the first core-pulling assembly to be prior to the core-pulling movement of the second core-pulling assembly.

[0037] As Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the first core-pulling assembly 100 includes a first slider 110 and a spring block 130, the first slider 110 is provided with a driving hole, a shovel 120 is inserted into the driving hole, the shovel 120 is driven to displace towards the direction of the static mold plate, and a spring block 130 is installed below the shovel 120. Specifically, a drag hook 131 is installed below the shovel 120, a pull hole is formed on the side of the spring block 130 facing the shovel 120, the drag hook 131 extends into the pull hole and is connected with a pull rod in the pull hole; in other words, the spring block 130 is connected with the shovel 120 through the drag hook 131, when the shovel 120 is driven to move, the shovel 120 pulls the spring block to move through the drag hook 131.

[0038] As shown in Figure 1 , Figure 2 and Figure 3 , the second core-pulling assembly 200 is the main structure for realizing the core-pulling forming processing of dense through holes, which includes a linkage slider 210, a second slider 260, a driving piece 250, a second sliding rail 270, and a positioning thimble group 220; the second slider 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 slider 210 is connected with the second slider 260 and synchronously slides and displaces; a forming block 230 is embedded in the broken part of the linkage slider 210.

[0039] As shown in Figure 4 , the first slider 110 limits the core-pulling sliding displacement of the second slider 260 along the second sliding rail 270 through the spring block 130, that is, the spring block 130 is clamped on the second slider 260 to accurately position the second slider 260. Specifically, as shown in Figure 4 , the first slider 110 is located above the second slider 260, the first slider 110 is inserted with the shovel 120, the lower part of the shovel 120 is connected with the spring block 130 through the drag hook and linkage, one end of the spring block 130 abuts against the second slider 260, thereby limiting the sliding displacement of the second slider 260.

[0040] Based on the above structure, as shown in Figure 4 , the first slider 110 is connected with the shovel 120, the mold opening action drives the shovel 120 to displace upwards, thereby driving the first slider 110 to slide and displace, at the same time, the driven shovel 120 pulls the spring block 130 through the drag hook, and the spring block 130 synchronously displaces upwards with the shovel 120, when the spring block 130 completely separates from the second slider 260 and the second slider 260 is in the state of not being limited, the second slider 260 can be driven to displace by the driving piece 250.

[0041] As shown in Figure 4To ensure that the shovel 120 can effectively drive the elastic block 130 to move upward synchronously, a screw 140 is arranged on the second sliding block 260, and a spring 150 is sleeved on the screw 140; one end of the elastic 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 elastic 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 elastic block 130 through the drag hook, the compressed spring 150 releases the capacity, synchronously pushes the elastic block 130 to move upward synchronously, in other words: in order to ensure that the elastic block 130 can effectively move upward away from the second elastic block 130, two forces are applied to the elastic 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.

[0042] In detail, a limiting inclined surface is arranged at one end of the second sliding block towards the driving member, and the bottom end of the limiting inclined surface corresponds to the low position of the second sliding block; a hole position suitable for mounting the screw 140 is arranged at the low position of the second sliding block, and the spring 150 is sleeved outside the screw 140; one end of the spring 150 is abutted against the screw head of the screw 140, and the other end is abutted against the inner wall of the hole position of the second sliding block. In summary, when the screw 140 is pressed by the elastic block 130, the spring 150 is compressed and stored energy, and when the pressure of the elastic block 130 on the screw 140 gradually decreases, the spring 150 that is compressed and stored energy generates a reset pushing force, thereby pushing the elastic block 130 to move synchronously through the screw 140.

[0043] The positioning pin group 220 of the second core-pulling assembly 200 is arranged 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 achieved 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 arranged with the forming block 230 is driven by the driving member 250 to displace the core, 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 injury caused by mold sticking.

[0044] To achieve the above function, the positioning pin group 220 is relatively fixed by the positioning member 240, and the specific structure is as follows: Figure 1 , Figure 2 and Figure 3As shown, the positioning pin group 220 includes a positioning pin plate group 221 and positioning pins 222 fixedly installed on the pin plate group 221, the positioning pins 222 pass through the forming block 230 to abut against the product after injection molding, so as to position the product and effectively avoid core pulling damage. The positioning member 240 includes a positioning rod 241 and a positioning seat 242, the positioning seat 242 is fixedly connected with the second slide rail 270, and the positioning seat 242 is connected with the positioning pin plate group 221 through the positioning rod 241, so as to realize the relative movement relationship between the positioning pin group 220 and the linkage sliding block 210.

[0045] In detail, as shown in Figure 1 , Figure 2 and Figure 3 , when the driving member 250 drives the linkage sliding block 210 to slide and core-pull through the second sliding block 260, the positioning seat 242 is fixed on the second slide rail 270, the second slide rail 270 is in relative sliding displacement relationship with the second sliding block 260, the positioning pin plate group 221 is fixedly connected with the positioning seat 242 through the positioning rod 241, and at this time, the positioning pin plate group 221 is also relatively fixed, and the positioning pin 222 is also relatively fixed; the linkage sliding block 210 that slides and core-pulls forms a relative movement relationship with the positioning pin group 220, and in the process of the linkage sliding block 210 driving the forming block 230 to core-pull and demold, the positioning pin group 220 abuts against the product, effectively solving the technical problem of core-pulling damage caused by the forming block 230 being integrally core-pulled.

[0046] 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 group 220, and in structure, the linkage sliding block 210 is connected by a linkage sliding seat 211 and a 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 synchronously slide and displace, 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, and is buckled at the open surface of the linkage sliding seat 211, and is embedded in the forming block 230 away from the linkage sliding seat 211, the forming block 230 is provided with dense protrusions in the direction of the product forming cavity of the mold, for dense through hole forming, and the dense protrusions protrude from the linkage sliding block 210. A through hole is provided on the forming block 230 to allow the positioning pin 222 to be ejected. In this embodiment, the end of the second sliding block 260 away from the driving member 250 is designed with an inclined surface, and the linkage sliding seat 211 is fixed on the inclined surface, so as to match the position of the product forming cavity of the mold.

[0047] As shown in Figure 1 , Figure 2 andFigure 3 As shown, the positioning ejector plate assembly 221 includes a positioning ejector base plate and a positioning ejector panel that are fixedly connected to each other and move synchronously. The positioning ejector 222 is fixed on the positioning ejector base plate and passes through the positioning ejector panel. The positioning ejector 222 is inserted into the ejection through hole and passes through the ejection through hole to position and hold the product during the core pulling operation of the linkage slider 210 driving the molding block 230, thereby effectively preventing the product from being pulled apart during the core pulling and demolding process.

[0048] It should be noted that: such as Figure 3 As shown, the opening of the positioning through holes is adapted to the distribution of the positioning pins 222. Two or more positioning through holes are opened between adjacent positioning protrusions, and the positioning pins 222 abut against the connection between adjacent dense through holes.

[0049] like Figure 4 As shown, a first core-pulling assembly 100 and a second core-pulling assembly 200 are designed, with the first core-pulling assembly 100 placed on the second core-pulling assembly 200 to restrict the sliding core-pulling movement of the second core-pulling mechanism. Specifically, the spring block 130 in the first core-pulling mechanism, when not driven, is used to stop the core-pulling movement of the second slider 260 of the second core-pulling assembly 200; in other words, the second slider 260 can only be driven to perform the core-pulling forming movement after the spring block 130 is driven away from the second slider 260. This structure is designed to determine the movement sequence between the first core-pulling assembly 100 and the second core-pulling assembly 200.

[0050] In summary, combining Figures 1 to 4 As shown, the operating principle of the above structure is as follows:

[0051] Action 1: The first core-pulling assembly 100 performs core-pulling displacement:

[0052] The mold opening action drives the shovel 120. While driving the first slider 110 to perform core pulling displacement, the driven shovel 120 can also pull the spring block 130 through the hook. At the same time, the compressed and stored 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 slider 260 to release the second slider 260.

[0053] Action 2: The second core-pulling assembly 200 performs core-pulling displacement;

[0054] The driving member 250 drives the released second slider 260 to move in the direction of the second slide rail 270, and the slidingly moved second slider 260 drives the linkage slider 210 and the forming block 230 to move synchronously; at this time, the positioning pin group 220 in the linkage slider 210 is relatively fixed through the positioning member 240, that is, a relative displacement state is formed between the positioning pin group 220 and the linkage slider 210, the linkage slider 210 is slidingly displaced, and the positioning pin group 220 is relatively fixed; the linkage slider 210 which is slidingly displaced to perform core pulling forms a relative motion relationship with the positioning pin group 220, and in the process that the linkage slider 210 drives the forming block 230 to be core-pulled and demolded, the positioning pin 222 in the positioning pin group 220 abuts against the product, and the technical problem of core-pulling damage caused by the fact that the forming block 230 is integrally core-pulled.

[0055] The above merely describes a preferred specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, and all of these 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. A core draw control structure, characterized by: The first core-pulling assembly and the second core-pulling assembly are arranged adjacently. The first core-pulling assembly comprises a first slider, a shovel and an elastic block, and the second core-pulling assembly comprises a second slider. The shovel is connected with the first slider and the elastic block, and the elastic block presses the second slider to control the first core-pulling assembly to perform core-pulling movement prior to the second core-pulling assembly. The shovel is provided with a pull hook connected with the second slider.

2. The core-out control structure according to claim 1, characterized in that: The shovel driven to displace pulls the second slider through the pull hook to displace in linkage. The second slider is provided with an elastic member.

3. The core-out control structure of claim 1, wherein: The shovel presses the elastic member, and the elastic member can elastically push the elastic block to displace. The second slider is connected with a driving member and is driven to slide by the driving member.

4. The core-out control structure according to claim 3, wherein: The second slider is provided with a limiting slope at one end of the driving member, and the elastic member is arranged at a low position of the limiting slope.

5. The core-out control structure according to claim 4, characterized in that: The second slider is provided with a linkage slider, and an end of the linkage slider is embedded with a formed block.

6. The core-out control structure of claim 1, wherein: A second sliding rail is slidably connected with the second slider, and the second slider slides along the direction of the second sliding rail and synchronously with the linkage slider and the formed block. The linkage slider is provided with an ejection cavity, and a positioning pin is assembled in the ejection cavity. The second core-pulling assembly is further provided with a positioning ejection group, and the positioning ejection group comprises a positioning pin.

7. The core-out control structure of claim 6, wherein: The positioning pin is fixedly installed through a positioning member and can press a product through the formed block. The positioning pin is fixed on a positioning pin plate group, and the positioning pin plate group is fixedly connected with the positioning member.

8. The core-out control structure according to claim 7, wherein: The positioning pin plate group is movably installed in the ejection cavity. The second slider, the linkage slider and the formed block synchronously performing core-pulling displacement are cooperated with the relatively fixed positioning pin plate group and the positioning pin to realize the separation of the formed block and the product surface and complete the core-pulling operation. 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.

9. The core-out control structure of claim 8, wherein: ​

Images