Automatic water gap cutting mold

Abstract

The utility model belongs to the technical field of dies, and discloses an automatic water gap cutting die. The automatic water gap cutting mold comprises an upper mold, a lower mold, a runner plate and a linkage mechanism. And the upper mold and the lower mold are closed to jointly form a mold cavity for molding a plastic product. The runner plate is arranged on the lower mold in a sliding mode, the runner plate and the upper mold jointly form a glue supply runner after the upper mold and the lower mold are assembled, injection molding materials can be guided into the mold cavity through the glue supply runner, and a water gap is formed in the runner plate. The upper mold is in transmission connection with the runner plate through the linkage mechanism, so that the upper mold can drive the runner plate to slide through the linkage mechanism during mold opening, and the runner plate is separated from the mold cavity to cut off the water gap. When the mold is opened, the upper mold drives the runner plate to slide through the linkage mechanism to cut off the water gap, other special jigs or manual cutting is not needed, the water gap is cut off through the acting force of mold opening, the production efficiency of plastic products is improved, meanwhile, the cutting-off positions of the water gap are consistent, the consistency of the plastic products is high, and the percent of pass of the plastic products is higher.

Description

TECHNICAL FIELD

[0001] The utility model relates to mould technical field especially relates to a kind of automatic cutting water gap mould. BACKGROUND

[0002] Now, most plastic products are made by injection molding process, in the injection molding process, glue flow channel is set up in communication with mold cavity on mould, to inject molten injection plastic into mold cavity, molten injection plastic enters mold cavity to form plastic product, the corresponding injection plastic inlet on plastic product is water gap.

[0003] After the plastic product is formed, the product is taken out by opening mould first, at this time, plastic product is connected with water gap, then plastic product and water gap are fixed on special fixture to cut off material head, above these operation steps need to be completed by artificial, as it is artificial operation, there is difference between individuals, leading to product to appear certain proportion of defective product, so that prior art is troublesome and laborious, and efficiency is low, and special fixture also needs to be used, influence economic benefit.

[0004] Therefore, the above problems need to be solved. INVENTION CONTENTS

[0005] The utility model aims at providing a kind of automatic cutting water gap mould to improve the production efficiency of plastic product, ensure the cutting position of water gap consistent, and the consistency of plastic product is high, and the qualified rate is higher.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] An automatic cutting water gap mould, the automatic cutting water gap mould includes:

[0008] Upper die and lower die, jointly form mold cavity for forming plastic product after clamping;

[0009] Flow channel plate, slidingly arranged on the lower die, the flow channel plate and the upper die jointly form glue flow channel after the upper die and the lower die are clamped, injection plastic can be guided into the mold cavity through the glue flow channel, and water gap is formed on the flow channel plate;

[0010] Linkage mechanism, the upper die is drivingly connected with the flow channel plate through the linkage mechanism, so that the upper die can drive the flow channel plate to slide by the linkage mechanism when opening mould, so that the flow channel plate is separated from the mold cavity to cut off the water gap.

[0011] As preferably, the linkage mechanism includes:

[0012] Driving part, arranged on the upper die;

[0013] A driven element is arranged to slide on the lower die, the driven element is in transmission connection with the driving element and is connected with the runner plate, the sliding direction of the driven element is consistent with the sliding direction of the runner plate, and the sliding direction of the driven element is perpendicular to the opening direction.

[0014] Preferably, the driving element comprises a wedge-shaped block, and the driven element comprises a wedge-shaped slot, the wedge-shaped block is arranged to slide in the wedge-shaped slot.

[0015] When the wedge-shaped block moves in the opening direction, the wedge-shaped block can push against the slot wall of the wedge-shaped slot to drive the driven element to slide.

[0016] Preferably, the linkage mechanism further comprises an abutting element arranged on the lower die, the abutting element is located on the side of the driven element away from the runner plate, and the driven element abuts against the abutting element when sliding to the limit position.

[0017] Preferably, the linkage mechanism further comprises a first guide element and a second guide element arranged on the lower die, the first guide element, the second guide element and the lower die form a guide channel, and the driven element is in sliding cooperation with the guide channel.

[0018] Preferably, the linkage mechanism further comprises at least one connecting bolt, the connecting bolt passes through the driven element and is screwed to the runner plate.

[0019] Preferably, the automatic water gap cutting mold further comprises a limiting block arranged on the lower die, the limiting block and the lower die form a sliding channel, and the runner plate is in sliding cooperation with the sliding channel.

[0020] Preferably, the limiting block is provided with two limiting blocks, the two limiting blocks are arranged oppositely, and the arrangement direction of the two limiting blocks is perpendicular to the sliding direction of the runner plate.

[0021] Preferably, the limiting block is detachably arranged on the lower die.

[0022] Preferably, the upper die and the lower die jointly form a plurality of mold cavities, the number of the runner plate and the linkage mechanism corresponds to the number of the mold cavities, and the number of the runner plate and the linkage mechanism corresponds to the number of the mold cavities one by one.

[0023] The utility model discloses the beneficial effects of:

[0024] When the mold is opened, the upper die drives the runner plate to slide through the linkage mechanism to cut off the water gap, without using other special jigs or manual cutting, the cutting of the water gap is realized by the opening force, the production efficiency of the plastic product is improved, the cutting position of the water gap is consistent, the consistency of the plastic product is high, and the qualified rate is higher. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a structural schematic view of a plastic product and a water gap;

[0026] Figure 2 is a structural schematic view of an automatic water gap cutting mold provided by the present application Figure One ;

[0027] Figure 3 is a structural schematic view of an automatic water gap cutting mold provided by the present application Figure Two ;

[0028] Figure 4 is an exploded view of a driven member, a driving member, a connecting bolt and a flow channel plate provided by the present application;

[0029] Figure 5 is Figure 2 an enlarged view of A in FIG.

[0030] Figure 6 is Figure 3 an enlarged view of B in FIG.

[0031] In the drawings:

[0032] 100, lower mold; 200, plastic product; 300, water gap;

[0033] 1, flow channel plate; 11, limiting block; 12, connecting bolt;

[0034] 2, linkage mechanism; 21, driven member; 211, wedge-shaped groove; 22, driving member; 221, wedge-shaped block; 23, abutting member; 24, first guide member; 25, second guide member; 26, guide channel. DETAILED DESCRIPTION

[0035] Before any embodiments of the application are explained in detail, it is to be understood that the application is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the above-described accompanying drawings.

[0036] In this application, the terms "comprise", "comprising", "including", "including", "including" or any other variation thereof are intended to cover non-exclusive inclusions, so that processes, methods, articles or devices including a series of elements not only include those elements, but also include other elements not explicitly listed, or include elements inherent to such processes, methods, articles or devices. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of additional identical elements in the process, method, article or device including the element.

[0037] In the present application, the term "and / or" is used to describe the relationship between the associated objects, which means that there can be three relationships. For example, a centrifugal vortex magnetic force pump and / or a centrifugal vortex magnetic force pump can represent three cases: only one centrifugal vortex magnetic force pump exists, both a centrifugal vortex magnetic force pump and a centrifugal vortex magnetic force pump exist, and only a centrifugal vortex magnetic force pump exists. In addition, the character " / " in the present application generally represents that the front and rear associated objects are in a "and / or" relationship.

[0038] In the present application, the terms "connected", "combined", "coupled", and "mounted" can be direct connection, combination, coupling or mounting, or indirect connection, combination, coupling or mounting. Among them, for example, direct connection means that two parts or components are connected together without the need for an intermediate part, and indirect connection means that two parts or components are connected through at least one intermediate part. In addition, "connection" and "coupling" are not limited to physical or mechanical connection or coupling, and can include electrical connection or coupling.

[0039] In the present application, those of ordinary skill in the art will understand that the relative terms used in connection with the quantity or condition (for example, "about", "approximately", "substantially" and the like) include the value indicated by the context. For example, the relative terms at least include the degree of error related to the measurement of a specific value, the tolerance caused by manufacturing, assembly, use, etc. related to a specific value. Such terms should also be considered to disclose the range defined by the absolute values of the two endpoints. The relative term can refer to a certain percentage (e.g. 1%, 5%, 10% or more) of the indicated value. The numerical value without the relative term should also be disclosed as a specific value with a tolerance. In addition, "substantially" when expressing the relative angular positional relationship (for example, substantially parallel, substantially perpendicular), can refer to a certain degree (e.g. 1 degree, 5 degrees, 10 degrees or more) added or subtracted from the indicated angle.

[0040] In the present application, those of ordinary skill in the art will understand that the functions performed by the components can be performed by one component, multiple components, one part, or multiple parts. Similarly, the functions performed by the parts can also be performed by one part, one component, or multiple parts in combination.

[0041] In the present application, the terms "upper", "lower", "left", "right", "front", "back" and the like are described in the orientation and positional relationship shown in the drawings, and should not be understood as a limitation on the embodiments of the present application. In addition, it is also necessary to understand that when referring to one element connected to another element "on" or "under", it can be directly connected to another element "on" or "under" or indirectly connected to another element "on" or "under" through an intermediate element. It should also be understood that the terms "upper", "lower", "left", "right", "front", "back" and the like not only represent the positive direction, but also can be understood as the side direction. For example, the lower side can include the directly below, left below, right below, front below and back below, etc.

[0042] Please refer to Figures 1 to 6 The present embodiment provides an automatic water gate cutting mold. The automatic water gate cutting mold comprises an upper mold, a lower mold 100, a runner plate 1 and a linkage mechanism 2. The upper mold (not shown in the figure) and the lower mold 100 form a mold cavity together after the mold is closed, which is used for molding a plastic product 200. The runner plate 1 is slidingly arranged on the lower mold 100, and the runner plate 1 and the upper mold form a glue supply channel together after the upper mold and the lower mold 100 are closed, and the injection plastic can be introduced into the mold cavity through the glue supply channel. The water gate 300 is formed on the runner plate 1. The upper mold is drivingly connected with the runner plate 1 through the linkage mechanism 2, so that the upper mold can drive the runner plate 1 to slide through the linkage mechanism 2 when the mold is opened, so that the runner plate 1 is separated from the mold cavity to cut off the water gate 300. Correspondingly, when the mold is closed, the upper mold drives the runner plate 1 to reset through the linkage mechanism 2, so that the glue supply channel and the upper mold can form the glue supply channel together after the upper mold and the lower mold 100 are closed.

[0043] In actual production, the part of the molded plastic product 200 located in the glue supply channel is the water gate 300, which is integrated with the part of the plastic product 200 located in the mold cavity. The action of cutting off the water gate 300 mentioned in the foregoing is also the action of separating the two parts. It should be noted that in the present embodiment, the direction of closing and opening the mold is the vertical direction, and the sliding direction of the runner plate 1 is the horizontal direction.

[0044] It can be understood that when the mold is opened, the upper mold drives the runner plate 1 to slide through the linkage mechanism 2 to cut off the water gate 300, without the need to use other special jigs or manually cut off. The cutting off of the water gate 300 is realized by using the opening force, which improves the production efficiency of the plastic product 200, and at the same time, the cutting position of the water gate 300 is consistent, the consistency of the plastic product 200 is high, and the pass rate is higher.

[0045] Specifically, the linkage mechanism 2 comprises a driven part 21 and a driving part 22. The driving part 22 is arranged on the upper die. The driven part 21 is slidingly arranged on the lower die 100. The driven part 21 is in transmission connection with the driving part 22 and is connected with the runner plate 1. The sliding direction of the driven part 21 is consistent with the sliding direction of the runner plate 1. The sliding direction of the driven part 21 is perpendicular to the opening direction. In this way, the driving part 22 arranged on the upper die drives the driven part 21 to slide, and then the driven part 21 drives the runner plate 1 to slide. The structure is simple and the transmission efficiency is high.

[0046] Particularly, the driving part 22 comprises a wedge-shaped block 221, and the driven part 21 comprises a wedge-shaped groove 211. The wedge-shaped block 221 is slidingly arranged in the wedge-shaped groove 211. When the wedge-shaped block 221 moves in the opening direction, it can push against the groove wall of the wedge-shaped groove 211 to drive the driven part 21 to slide.

[0047] It can be understood that the wedge-shaped transmission structure composed of the wedge-shaped block 221 and the wedge-shaped groove 211 realizes movement through the principle of slope and pressure angle, converts the force of the vertical movement of the upper die into the force of the horizontal movement of the runner plate 1, and has reasonable design and high manufacturing precision. Therefore, the movement process is stable and reliable, and failure and damage are less likely to occur. In addition, the wedge-shaped transmission structure composed of the wedge-shaped block 221 and the wedge-shaped groove 211 has a simple structure and is easy to operate. When mechanical transmission needs to be adjusted or repaired, it can be completed by simple operation without the need for professional tools and skills, thereby reducing the operation and maintenance costs. It should be pointed out that in other embodiments, the driving part 22 and the driven part 11 can also adopt gear transmission and other structures to realize the transmission connection described above, which will not be described in detail.

[0048] To prevent the driven part 21 from interfering with other components due to too large sliding distance during the opening process, the linkage mechanism 2 further comprises an abutting part 23 arranged on the lower die 100. The abutting part 23 is located on the side of the driven part 21 away from the runner plate 1. The driven part 21 abuts against the abutting part 23 when it slides to the limit position. In this way, the displacement of the driven part 21 is limited by the abutting part 23 to prevent it from exceeding the predetermined range, thereby ensuring the stability of the linkage mechanism 2.

[0049] To make the driven part 21 slide more smoothly, the linkage mechanism 2 further comprises a first guide part 24 and a second guide part 25 arranged on the lower die 100. The first guide part 24, the second guide part 25 and the lower die 100 form a guide channel 26. The driven part 21 slidingly cooperates with the guide channel 26. It can be understood that the guide channel 26 can provide stable movement support for the driven part 21 to ensure that the driven part 21 moves linearly in the horizontal direction. In addition, the guide channel 26 can also prevent the driven part 21 from moving in the vertical direction to avoid the driving part 22 driving the driven part 21 upward during the opening process.

[0050] It is worth noting that the runner plate 1 mentioned in the preceding description has the function of supplying injection material, which is a main component in the mold. In actual application, it needs to be checked and maintained regularly. Therefore, in order to improve the convenience of checking or maintaining the runner plate 1, the linkage mechanism 2 further comprises at least one connecting bolt 12, which passes through the driven part 21 and is screwed to the runner plate 1, so as to facilitate the disassembly of the runner plate 1 during inspection or maintenance. In this embodiment, the connecting bolt 12 is provided with two.

[0051] In order to make the runner plate 1 slide more smoothly, the automatic water cutting mold further comprises a limiting block 11 arranged on the lower mold 100, and the limiting block 11 and the lower mold 100 form a sliding channel, and the runner plate 1 is in sliding cooperation with the sliding channel. In this embodiment, the end of the runner plate 1 away from the driving part 22 is in sliding cooperation with the sliding channel. It can be understood that the sliding channel can provide stable motion support for the runner plate 1 to ensure that the runner plate 1 moves linearly in the horizontal direction. In addition, the sliding channel can also prevent the runner plate 1 from moving in the vertical direction.

[0052] Further, the limiting block 11 is provided with two, and the two limiting blocks 11 are arranged opposite to each other, and the arrangement direction of the two limiting blocks 11 is perpendicular to the sliding direction of the runner plate 1. In this way, the two sides of the runner plate 1 can be limited, on the one hand, to prevent the runner plate 1 from being raised on one side, and on the other hand, to ensure the stability of the runner plate 1 sliding.

[0053] Based on the foregoing, it is necessary to check and maintain the runner plate 1 regularly in actual application. Therefore, in order to further improve the convenience of checking or maintaining the runner plate 1, the limiting block 11 is detachably arranged on the lower mold 100. In this embodiment, the limiting block 11 is screwed to the lower mold 100 by a bolt. Of course, in other embodiments, the limiting block 11 can adopt any other detachable connection mode such as clamping, buckling, etc. The comparison is not limited.

[0054] Generally speaking, for small plastic products 200, multiple cavities are used in the same mold to realize batch production, so as to improve production efficiency. For example, in this embodiment, the upper mold and the lower mold 100 jointly form multiple cavities, and the number of the runner plate 1 and the linkage mechanism 2 corresponds to the number of the cavities, and one-to-one correspondence. In this way, multiple plastic products 200 can be processed at the same time in the same production cycle, which significantly improves the production efficiency. Moreover, by removing the water ports 300 of multiple plastic products 200 at the same time in the same production cycle, the production efficiency is further improved.

[0055] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. For those skilled in the art, various obvious changes, re-adjustments and replacements can be made without departing from the protection scope of the present application. Here, it is not necessary and also impossible to enumerate all the implementation modes. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application claim.

Claims

1. An automatic sprue cutting mold characterized by comprising: The automatic water gap cutting mold comprises: an upper mold and a lower mold (100) which, after being closed, jointly form a mold cavity for molding a plastic product (200); a runner plate (1) which is slidingly arranged on the lower mold (100), and which, after the upper mold and the lower mold (100) are closed, jointly forms a glue runner with the upper mold, and through which injection plastic can be guided into the mold cavity, and a water gap (300) is formed on the runner plate (1); a linkage mechanism (2) which drivingly connects the upper mold and the runner plate (1) so that, when the mold is opened, the upper mold can drive the runner plate (1) to slide through the linkage mechanism (2), so that the runner plate (1) is separated from the mold cavity to cut off the water gap (300).

2. An automatic sprue cutting mold according to claim 1, wherein The linkage mechanism (2) comprises: a driving part (22) arranged on the upper mold; a driven part (21) slidingly arranged on the lower mold (100), which is drivingly connected with the driving part (22) and connected with the runner plate (1), and the sliding direction of the driven part (21) is consistent with that of the runner plate (1), and the sliding direction of the driven part (21) is perpendicular to the opening direction.

3. An automatic sprue cutting mold according to claim 2, wherein The driving part (22) comprises a wedge block (221), and the driven part (21) comprises a wedge groove (211), and the wedge block (221) is slidingly arranged in the wedge groove (211); When the wedge block (221) moves in the opening direction, it can push against the groove wall of the wedge groove (211) to drive the driven part (21) to slide.

4. An automatic sprue cutting mold according to claim 3, wherein The linkage mechanism (2) further comprises an abutting part (23) arranged on the lower mold (100), and the abutting part (23) is located on the side of the driven part (21) away from the runner plate (1), and the driven part (21) abuts against the abutting part (23) when it slides to the limit position.

5. An automatic sprue cutting mold according to claim 3, wherein The linkage mechanism (2) further comprises a first guide part (24) and a second guide part (25) arranged on the lower mold (100), and the first guide part (24), the second guide part (25) and the lower mold (100) jointly form a guide channel (26), and the driven part (21) slidingly cooperates with the guide channel (26).

6. An automatic sprue cutting mold according to claim 3, wherein The linkage mechanism (2) further comprises at least one connecting bolt (12) which passes through the driven part (21) and is screwed to the runner plate (1).

7. An automatic sprue cutting mold according to claim 1, wherein The automatic water gap cutting mold further comprises a limiting block (11) arranged on the lower mold (100), and the limiting block (11) and the lower mold (100) jointly form a sliding channel, and the runner plate (1) slidingly cooperates with the sliding channel.

8. An automatic sprue cutting mold according to claim 7, wherein The limiting block (11) is arranged in two, and the two limiting blocks (11) are arranged in opposite directions, and the arrangement direction of the two limiting blocks (11) is perpendicular to the sliding direction of the runner plate (1).

9. An automatic sprue cutting mold according to claim 7, wherein The limiting block (11) is detachably arranged on the lower mold (100).

10. An automatic sprue cutting mold according to any one of claims 1 to 9, wherein The upper die and the lower die (100) are jointly formed with a plurality of the mold cavities, the number of the runner plates (1) and the linkage mechanisms (2) are set corresponding to the number of the mold cavities, and one-to-one correspondence is established.

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