Mould structure capable of rubbing and penetrating side edge of front mould by small-angle rear mould and preventing excessive flash

Abstract

The utility model relates to the technical field of injection molds, and discloses a mold structure for a small-angle rear mold to penetrate through the side edge of a front mold and preventing burrs, the mold structure comprises a front mold body and a first connecting seat, an upper mold seat is arranged at the top end of the front mold body, and guide grooves are formed in four corners of the bottom end of the upper mold seat. According to the mold structure capable of rubbing and penetrating the side edge of the front mold by the small-angle rear mold and preventing excessive flash, parts such as the exhaust hole are arranged, the side edge of the front mold is designed into a small-angle inclined surface, the resistance during rubbing and penetrating of the rear mold is reduced, the side edge of the front mold is chamfered, tight contact during mold closing of the mold is ensured, excessive flash is prevented from being generated on a protruding edge, and the service life of the mold structure is prolonged. By means of the positions and the number of the exhaust holes, it is ensured that when the rear mold body penetrates through the side edge of the front mold in a rubbing mode, gas can be smoothly exhausted, the phenomenon that air or gas is left in a mold cavity and consequently burrs are caused is avoided, and the problem that burrs are likely to be caused when the rear mold penetrates through the side edge of the front mold in a rubbing mode is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection mold technical field, concretely is the mold structure of small angle back mould wipes and prevents batch edge of front mould side. BACKGROUND

[0002] In injection molding, the precision and design of the mold have a crucial influence on product quality. Especially for some products with complex geometric shapes, the mold needs to be accurately matched during the molding process. However, in some cases, when the back mold wipes the side of the front mold during movement, the traditional mold design is prone to produce batch edge phenomenon, that is, during the mold closing process, plastic residues overflow from the mold gap, forming irregular excess material, affecting the appearance and dimensional accuracy of the product. How to avoid the generation of batch edge, ensure the effective wiping of the back mold on the side of the front mold and not affect the stability of the mold is a technical problem in current mold design.

[0003] According to the design of the existing mold structure, when the back mold wipes the side of the front mold, it is easy to cause batch edge, which not only affects the appearance quality, but also increases the subsequent finishing workload, resulting in not being suitable, so the structure needs to be improved.

[0004] Now, a new type of mold structure for small angle back mold wiping and preventing batch edge of front mold side is proposed to solve the above problems. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims at providing a mold structure for small angle back mold wiping and preventing batch edge of front mold side to solve the problem of batch edge caused by wiping the side of the front mold by the back mold in the background technology.

[0006] To achieve the above purpose, the utility model provides the following technical scheme: a mold structure for small angle back mold wiping and preventing batch edge of front mold side, comprising a front mold body and a first connecting seat, the top end of the front mold body is provided with an upper mold seat, the four corners of the bottom end of the upper mold seat are provided with guide grooves, the bottom end of the upper mold seat is fixedly connected with a back mold body, the inside of the top end of the front mold body is provided with a cooling cavity, the top end of the front mold body is provided with a mold cavity, the outer part of the back mold body and the inner wall of the mold cavity are respectively fixedly connected with wear-resistant materials, and the outer part of the front mold body is provided with exhaust holes.

[0007] As a further technical scheme of the utility model, the exhaust holes are equidistant on the outer part of the front mold body, and the exhaust holes coincide with the inside of the mold cavity.

[0008] As a further technical scheme of the utility model, the bottom end of the front mold body is fixedly connected with a first connecting seat on both sides, the top end of the first connecting seat is fixedly connected with a supporting rod, the two sides of the upper mold seat are fixedly connected with connecting blocks, and the connecting blocks are movably sleeved on the outside of the supporting rod.

[0009] As a further technical scheme of the utility model, the four corners of the front mold body top are fixedly connected with guide rods, and the guide rods are movably embedded in the guide grooves.

[0010] As a further technical scheme of the utility model, the front end of the front mold body is provided with a first reserved groove, the inside of the cooling cavity is fixedly connected with cooling pipes, and the cooling pipes are fixedly connected with shunt pipes.

[0011] As a further technical scheme of the utility model, the top end of the supporting rod is fixedly connected with a top plate, the right side of the top plate top end is fixedly installed with a driving motor, the top end of the top plate is fixedly connected with a first fixing seat and a second fixing seat respectively, the output end of the driving motor penetrates the inside of the second fixing seat and is fixedly connected with a straight-toothed roller, the top end of the upper mold base is fixedly connected with a second connecting seat, the inside of the top plate is provided with a second reserved groove, the right side of the top plate top is provided with a controller, and the controller is electrically connected with the driving motor.

[0012] As a further technical scheme of the utility model, the front end of the shunt pipe penetrates the inside of the first reserved groove and is fixedly connected with a fixed pipe, the front end of the fixed pipe is fixedly connected with a water inlet, and the outside of the water inlet is fixedly installed with a valve.

[0013] As a further technical scheme of the utility model, the top end of the second connecting seat penetrates the inside of the second reserved groove longitudinally, the front end and the rear end of the second connecting seat are provided with tooth grooves, and the second connecting seat is engaged with the straight-toothed roller.

[0014] Compared with the prior art, the utility model has the advantages that the mold structure that the small-angle rear mold rubs the front mold side edge and prevents batch edge not only realizes the generation of batch edge, realizes the precision and stability when ensuring the mold closing, and realizes the function of uniform cooling, further reduces the batch edge problem;

[0015] (1) by setting up exhaust hole and other parts, the front mold side edge is designed as a small-angle inclined plane, the resistance when the rear mold rubs is reduced, the generation of batch edge is avoided, the chamfering treatment is carried out on the front mold side edge, the close contact when the mold closes is ensured, the batch edge of the sudden edge is prevented, the outside of the rear mold body and the inner wall of the mold cavity are fixedly connected with wear-resistant materials such as high-hardness steel or coating materials respectively, the durability of the mold is improved, the wear caused by friction in the long-term use process is reduced, the position and quantity of the exhaust hole are utilized, the gas can be smoothly discharged when the rear mold body rubs the front mold side edge, the air or gas is avoided to stay in the mold cavity, and the generation of batch edge phenomenon is avoided;

[0016] (2) By setting up with drive motor and other parts, using the controller to start the drive motor, drive the straight-toothed roller rotation, can drive the upper die holder stable lifting, the connecting block will be sleeved on the support rod when the upper die holder is lifting, and the bottom guide groove will be moved on the guide rod, so that the mold closing can ensure the uniform distribution of pressure during the mold closing process, especially when the rear mold rubs through the side of the front mold, to avoid the generation of burr due to excessive pressure, according to different products and materials, the pressure of the mold closing can be adjusted in real time, to ensure the accuracy and stability during the mold closing;

[0017] (3) By setting up with cooling pipe and other parts, using the water inlet to connect with the external cooling water pipe, opening the valve, so that the cooling water is injected into the shunt pipe, and then flows into the cooling pipe, because the cooling pipe is evenly distributed outside the mold cavity, by reasonably arranging the cooling channel, the cooling of each part of the mold is ensured to be uniform, to avoid irregular plastic flow due to local uneven cooling, and further reduce the burr problem. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a front view cross-sectional structure schematic view of the utility model;

[0019] Figure 2 It is a side view structure schematic view of the connecting way of the straight-toothed roller and the connecting seat of the utility model;

[0020] Figure 3 It is a front view structure schematic view of the connecting way of the fixed pipe and the shunt pipe of the utility model;

[0021] Figure 4 It is a front view structure schematic view of the connecting way of the exhaust hole and the front mold of the utility model.

[0022] In the drawing: 1, front mold body; 2, first connecting seat; 3, support rod; 4, cooling cavity; 5, fixed pipe; 6, shunt pipe; 7, water inlet; 8, valve; 9, first reserved groove; 10, cooling pipe; 11, mold cavity; 12, rear mold body; 13, wear-resistant material; 14, exhaust hole; 15, guide groove; 16, guide rod; 17, connecting block; 18, second connecting seat; 19, top plate; 20, first fixed seat; 21, second reserved groove; 22, drive motor; 23, second fixed seat; 24, straight-toothed roller; 25, upper die holder; 26, controller. DETAILED DESCRIPTION

[0023] The technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0024] Referring to Figures 1-4 The utility model provides a kind of mould structure that small-angle rear mould rubs through front mould side edge and prevents batch edge, including front mould body 1 and first connecting seat 2, the top of front mould body 1 is provided with upper die seat 25, and the four corners of the bottom of upper die seat 25 are provided with guide groove 15, and the bottom of upper die seat 25 is fixedly connected with rear mould body 12, the inside of the top of front mould body 1 is provided with cooling cavity 4, and the top of front mould body 1 is provided with mould cavity 11, and the outer portion of rear mould body 12 and the inner wall of mould cavity 11 are fixedly connected with wear-resistant material 13 respectively, and the outer portion of front mould body 1 is provided with exhaust hole 14;

[0025] Exhaust hole 14 is equidistant on the outer portion of front mould body 1, and exhaust hole 14 is consistent with the inside of mould cavity 11;

[0026] Specifically, as Figure 1 And Figure 4 It is shown that the side edge of front mould is designed as small-angle inclined plane, and the resistance when rear mould rubs through is reduced, to avoid the generation of batch edge, chamfering is carried out on the side edge of front mould, to ensure the close contact when mould is closed, to prevent batch edge from being generated, wear-resistant material 13, such as high-hardness steel material or coating material, is fixedly connected with the outer portion of rear mould body 12 and the inner wall of mould cavity 11 respectively, to improve the durability of mould, to reduce wear caused by friction in long-term use, the position and quantity of exhaust hole 14 are used to ensure that gas can be smoothly discharged when rear mould body 12 rubs through the side edge of front mould body 1, to avoid that air or gas is retained in mould cavity 11, to cause the generation of batch edge.

[0027] The bottom of the both sides of front mould body 1 is fixedly connected with first connecting seat 2, the top of first connecting seat 2 is fixedly connected with support rod 3, the both sides of upper die seat 25 are fixedly connected with connecting block 17, and connecting block 17 is movably sleeved on the outer portion of support rod 3;

[0028] The four corners of the top of front mould body 1 are fixedly connected with guide rod 16, and guide rod 16 is movably embedded in the inside of guide groove 15;

[0029] The top of support rod 3 is fixedly connected with top plate 19, drive motor 22 is fixedly installed on the right side of the top of top plate 19, first fixed seat 20 and second fixed seat 23 are fixedly connected with the top of top plate 19 respectively, the output end of drive motor 22 penetrates the inside of second fixed seat 23 and is fixedly connected with straight-toothed roller 24, the top of upper die seat 25 is fixedly connected with second connecting seat 18, second reserved slot 21 is arranged in the inside of top plate 19, and controller 26 is arranged on the right side of the top of top plate 19, and controller 26 is electrically connected with drive motor 22;

[0030] The top end of the second connecting seat 18 longitudinally penetrates the inside of the second reserved slot 21, and the front end and the rear end of the second connecting seat 18 are provided with tooth grooves, and the second connecting seat 18 is engaged with the straight-toothed roller 24;

[0031] Specifically, as shown in Figure 1 and Figure 2 , the driving motor 22 is started by the controller 26 (this technology is prior art, and thus will not be repeated), and the straight-toothed roller 24 is driven to rotate, which can drive the upper die seat 25 to stably ascend and descend. The connecting block 17 is sleeved on the support rod 3 to guide the movement when the upper die seat 25 ascends and descends, and the bottom guide groove 15 moves on the guide rod 16, so that the mold is ensured to be uniformly distributed in the pressure during the closing process, especially when the rear mold rubs through the side edge of the front mold, avoiding the generation of burrs due to excessive pressure. According to different products and materials, the pressure of the mold closing can be adjusted in real time to ensure the precision and stability during the closing.

[0032] The front end of the front mold body 1 is provided with a first reserved slot 9, and the inside of the cooling cavity 4 is fixedly connected with a cooling pipe 10, and the cooling pipes 10 are fixedly connected with a shunt pipe 6;

[0033] The front end of the shunt pipe 6 penetrates the inside of the first reserved slot 9 and is fixedly connected with a fixed pipe 5, the front end of the fixed pipe 5 is fixedly connected with a water inlet 7, and the outside of the water inlet 7 is fixedly installed with a valve 8;

[0034] Specifically, as shown in Figure 1 and Figure 3 , the water inlet 7 is connected with an external cooling water pipe, the valve 8 is opened, and the cooling water is injected into the shunt pipe 6 and then flows into the cooling pipe 10. Because the cooling pipe 10 is evenly distributed around the outside of the mold cavity 11, the cooling channel is reasonably arranged to ensure that each part of the mold is evenly cooled, avoid irregular plastic flow due to uneven local cooling, and further reduce the burr problem.

[0035] Working principle: the utility model discloses in use, first, utilize the controller 26 to start drive motor 22, drive straight toothed roller 24 rotation, can drive the stable lifting of upper mould base 25, and the connecting block 17 of upper mould base 25 will be sleeved on the guide activity of support rod 3 when lifting, and the guide groove 15 of bottom will be active on guide rod 16, make sure that the pressure of mould is evenly distributed in the process of mould closing when mould closing, especially when the rear mould rubs the side of front mould, avoid the generation of batch edge due to excessive pressure, according to different products and materials, the pressure of mould closing can be adjusted in real time, ensure the precision and stability when closing, then, the side of front mould is designed as small angle bevel, reduce the resistance when the rear mould rubs, avoid the generation of batch edge, chamfer the side of front mould, ensure the close contact when mould closing, prevent batch edge of abrupt edge, utilize the outer of rear mould body 12 and the inner wall of mould cavity 11 respectively fixed connection has wear -resisting material 13, such as high hardness steel or coating material, improve mould durability, reduce the abrasion caused by friction in the long-term use, utilize the position and number of exhaust hole 14, ensure that when the rear mould body 12 rubs the side of front mould body 1, gas can be smoothly discharged, avoid air or gas stagnate in mould cavity 11 body, cause the generation of batch edge phenomenon, finally, utilize the water inlet 7 and the connection of external cooling water pipe, open valve 8, make its cooling water injection into the shunt pipe 6, flow into cooling pipe 10 again, because cooling pipe 10 is evenly distributed around the mould cavity 11, by arranging the cooling channel reasonably, ensure that the cooling of each part of mould is even, avoid the irregular plastic flow due to uneven local cooling, further reduce batch edge problem.

[0036] It is obvious for those skilled in the art that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic features of the utility model. Therefore, the embodiments should be regarded as exemplary and non-limiting from any point of view, and the scope of the utility model is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be regarded as limiting the involved claims.

Claims

1. A mold structure for preventing shavings by having the rear mold rub against the side of the front mold at a small angle, comprising a front mold body (1) and a first connecting seat (2), characterized in that: The top of the front mold body (1) is provided with an upper mold base (25), and the four corners at the bottom of the upper mold base (25) are provided with guide grooves (15). The bottom of the upper mold base (25) is fixedly connected to the rear mold body (12). The interior of the top of the front mold body (1) is provided with a cooling cavity (4). The top of the front mold body (1) is provided with a mold cavity (11). The exterior of the rear mold body (12) and the inner wall of the mold cavity (11) are respectively fixedly connected with wear-resistant materials (13). The exterior of the front mold body (1) is provided with an exhaust hole (14).

2. The mold structure according to claim 1, characterized in that: The vent holes (14) are evenly spaced outside the front mold body (1), and the vent holes (14) match the interior of the mold cavity (11).

3. The mold structure according to claim 1, characterized in that: The bottom ends of both sides of the front mold body (1) are fixedly connected to the first connecting seat (2), and the top end of the first connecting seat (2) is fixedly connected to the support rod (3). The two sides of the upper mold base (25) are fixedly connected to the connecting block (17), and the connecting block (17) is sleeved on the outside of the support rod (3) and is movable.

4. The mold structure according to claim 3, characterized in that: Guide rods (16) are fixedly connected to the four corners at the top of the front mold body (1), and the guide rods (16) are movable and embedded in the guide groove (15).

5. The mold structure according to claim 1, characterized in that: The front end of the front mold body (1) is provided with a first reserved groove (9), and the interior of the cooling cavity (4) is fixedly connected with a cooling pipe (10), and the cooling pipes (10) are fixedly connected with a diversion pipe (6).

6. The mold structure according to claim 3, characterized in that: The top of the support rod (3) is fixedly connected to a top plate (19). A drive motor (22) is fixedly installed on the right side of the top of the top plate (19). The top of the top plate (19) is fixedly connected to a first fixed seat (20) and a second fixed seat (23). The output end of the drive motor (22) passes through the interior of the second fixed seat (23) and is fixedly connected to a straight toothed roller (24). The top of the upper mold base (25) is fixedly connected to a second connecting seat (18). The interior of the top plate (19) is provided with a second reserved groove (21). A controller (26) is provided on the right side of the top of the top of the top plate (19). The controller (26) is electrically connected to the drive motor (22).

7. The mold structure according to claim 5, characterized in that: The front end of the diversion pipe (6) passes through the interior of the first reserved groove (9) and is fixedly connected to a fixed pipe (5). The front end of the fixed pipe (5) is fixedly connected to a water inlet (7), and a valve (8) is fixedly installed on the outside of the water inlet (7).

8. The mold structure according to claim 6, characterized in that: The top end of the second connecting seat (18) extends longitudinally through the interior of the second reserved groove (21). The front and rear ends of the second connecting seat (18) are provided with toothed grooves. The second connecting seat (18) meshes with the straight toothed roller (24).

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