CN219618379U - Injection Mold for Thick Wall Plastic Guardrail with Shear Remnant Structure - Google Patents

Abstract

The utility model provides a thick-wall plastic guardrail injection mold with a shearing excess material structure, and belongs to the technical field of molds. The plastic injection molding machine comprises an upper die plate and a lower die plate, wherein a plurality of guardrail molding cavities are arranged between the upper die plate and the lower die plate, the plastic injection molding machine further comprises a plurality of plastic injection runners for injecting injection molding liquid into the guardrail molding cavities, and residual material shearing assemblies are further arranged on two sides of the plastic injection runners and at the joint of the plastic injection runners and the guardrail molding cavities. Injection molding liquid can flow into the guardrail forming cavity through the glue inlet flow passage, after injection molding liquid is condensed, the residual material shearing assembly can shear the residual material, the product and the joints of the two ends of the residual material and the glue inlet flow passage, so that the guardrail product does not need to be sheared again after the product is ejected.

Description

Thick-wall plastic guardrail injection mold with shear residue structure

technical field

The utility model belongs to the technical field of moulds, and relates to a thick-walled plastic guardrail injection mold with a shearing residue structure.

Background technique

Plastic guardrails are generally molded by injection molding. When plastic guardrail injection molds are injected, part of the remaining material will be left in the glue inlet channel. After the injection liquid solidifies, this part of the remaining material will solidify in the glue inlet flow channel. There is a residual material ejection mechanism that can eject the residual material in the glue-feeding flow channel, but the residual material after ejection will still stick to the guardrail product, which needs to be cut off manually, and the labor cost during production is relatively high.

For example, a Chinese patent discloses an injection molding mold for a combined isolation guardrail [application number: 202023250195.5], which includes an upper mold, an injection pipe is fixedly installed on the top of the upper mold, and a preheating device is fixedly installed on the side of the bottom of the injection pipe. , the bottom of the upper mold is movably installed with a lower mold, the bottom of the lower mold is fixedly installed with an ejector device, and the bottom of the ejector device is fixedly installed with a heat sink.

Utility model content

The purpose of the utility model is to solve the above-mentioned problems and provide a thick-walled plastic guardrail injection mold with a shear surplus structure.

In order to achieve the above object, the utility model adopts the following technical solutions:

A thick-walled plastic guardrail injection mold with a shear surplus structure, including an upper template and a lower template, a number of guardrail molding cavities are arranged between the upper template and the lower template, and several guardrail molding cavities are also included. The glue inlet channel for injecting the injection molding liquid is provided with residual material shearing components on both sides of the glue inlet runner and at the joint between the glue inlet runner and the guardrail molding cavity.

In the above-mentioned thick-walled plastic guardrail injection mold with a shear surplus structure, the surplus shear assembly includes a shear head and a push rod, and the shear head is vertically arranged on the lower formwork, and the shear head The bottom is connected with the push rod driving plate arranged on the lower side of the lower formwork through the push rod.

In the above-mentioned thick-walled plastic guardrail injection mold with shear surplus structure, the lower template is further provided with a limit rod, which is inserted into the bottom of the shear head and is slidably connected with the ejector rod.

In the above-mentioned thick-walled plastic guardrail injection mold with a shear surplus structure, the ejector rod drive plate is arranged on the lower side of the ejector pin fixed plate connected with the ejector mechanism, and the ejector rod vertically penetrates through the ejector pin fixed plate and It is slidingly connected with the thimble fixing plate, and there is a gap between the ejector pin driving plate and the thimble fixing plate.

In the above-mentioned thick-walled plastic guardrail injection mold with a shear surplus structure, the guardrail molding cavity is provided with four sides between the upper template and the lower template and are respectively located at the four side wall positions of the upper template and the lower template. At the side of the guardrail forming cavity far away from the glue inlet channel, there is a sliding core-pulling seat that is slidably connected with the lower template and inserted into the guardrail forming cavity. The forming structure of the guardrail installation part connected with the core pulling seat.

In the above-mentioned thick-walled plastic guardrail injection mold with shear surplus structure, the guardrail installation part molding structure includes a molding seat fixedly connected with a sliding core-pulling seat, and a horizontally arranged The upper molding block, the middle molding block and the lower molding block, a rectangular ring-shaped mounting part forming groove is formed between the upper forming block, the middle forming block and the lower forming block, and the mounting part forming groove and the guardrail are formed The sides of the cavity are connected, and the lower template is also provided with a translation assembly capable of driving the upper forming block, the middle forming block and the lower forming block to approach or move away from the guardrail forming cavity in the horizontal direction.

In the above-mentioned thick-walled plastic guardrail injection mold with a shear surplus structure, the cross-section of the middle molding block is square, the upper molding block has an upper horizontal molding surface and a vertical molding surface, and the lower molding block has an upper horizontal molding surface and a vertical molding surface. The top of the forming block has a lower horizontal forming surface, and the upper horizontal forming surface, the vertical forming surface and the lower horizontal forming surface are respectively set corresponding to the remaining three side walls of the middle forming block away from the guardrail forming cavity.

In the above-mentioned thick-walled plastic guardrail injection mold with a shear surplus structure, the upper horizontal forming surface, the vertical forming surface and the lower horizontal forming surface protrude from the isosceles trapezoidal forming bumps, The three side walls of the middle molding block corresponding to the upper horizontal molding surface, the vertical molding surface and the lower horizontal molding surface have a No. 1 molding groove recessed inward, and the molding projection is inserted into the No. 1 molding groove .

In the above-mentioned thick-walled plastic guardrail injection mold with shear surplus structure, the side wall of the middle molding block near the guardrail molding cavity is provided with two inwardly recessed No. 2 molding grooves.

In the above-mentioned thick-walled plastic guardrail injection mold with a shear surplus structure, the translation assembly includes a translation seat fixed on the lower template, and the forming seat is arranged on the translation seat and is slidably connected with the translation seat. The above-mentioned translation seat is fixedly connected with a linear drive connected to the forming seat;

The forming seat is also provided with a No. 1 T-shaped limit block inserted into the translation seat, and the lower template is also provided with at least two No. 2 T-shaped limit blocks inserted into the sliding core-pulling seat .

Compared with the prior art, the utility model has the advantages of:

1. The injection molding liquid can flow into the guardrail molding cavity through the glue feeding channel. After the injection molding liquid condenses, the residual material shearing component can cut off the remaining material and the product, as well as the connection between the residual material and the glue feeding channel, so that the product There is no need to trim the guardrail product again after ejection.

2. The ejector rod drive plate is externally connected to the drive mechanism, which can drive the shear head to move vertically through the ejector rod, and the sharp edge on the top surface of the shear head can cut off the condensed injection molding liquid.

3. The forming structure of the guardrail installation part can form the guardrail installation part on the side of the guardrail product without secondary processing in the later stage, which can effectively improve the production efficiency of the guardrail product.

4. The mounting part forming groove formed by the combination of the upper forming block, the middle forming block and the lower forming block can form a rectangular guardrail mounting part on the side of the product. After the product is injection molded, the translation component can drive the forming seat and the forming seat The connected sliding core-pulling seat and the upper forming block, the middle forming block and the lower forming block on the forming seat move away from the guardrail forming cavity, so that the sliding core-pulling seat, the upper forming block, the middle forming block and the lower forming block can be connected with the The product is released to facilitate product demoulding.

Other advantages, objectives and features of the utility model will partly be embodied through the following descriptions, and partly will be understood by those skilled in the art through the research and practice of the utility model.

Description of drawings

Fig. 1 is a schematic diagram of the external structure of the utility model;

Fig. 2 is the structural representation of lower formwork;

Fig. 3 is a structural schematic diagram of the forming structure of the sliding core-pulling seat and the guardrail installation part;

Fig. 4 is a structural schematic diagram of the molding structure of the guardrail installation part;

Fig. 5 is a structural schematic diagram of the residual material shearing assembly.

In the figure, the upper formwork 1, the lower formwork 2, the guardrail molding cavity 3, the glue inlet flow channel 4, the remaining material shearing assembly 5, the shearing head 6, the ejector rod 7, the limit rod 8, the sliding core pulling seat 9, the guardrail Mounting part molding structure 10, molding seat 11, upper molding block 12, middle molding block 13, lower molding block 14, mounting part molding groove 15, molding bump 16, No. 1 molding groove 17, No. 2 molding groove 18, Translation seat 19, No. 1 T-shaped limiting block 20, and No. 2 T-shaped limiting block 21.

Detailed ways

As shown in Figures 1-5, a thick-walled plastic guardrail injection mold with a shear surplus structure includes an upper template 1 and a lower template 2, and several guardrails are arranged between the upper template 1 and the lower template 2 The forming cavity 3 also includes several glue-feeding runners 4 for injecting injection molding liquid into the guardrail molding cavity 3. A residual material shearing assembly 5 is provided.

In the utility model, the injection molding liquid can flow into the guardrail molding cavity through the glue inlet flow channel 4. After the injection molding liquid is condensed, the remaining material shearing assembly can cut off the remaining material and the product, as well as the connection between the remaining material and the two ends of the glue inlet flow channel. , so that there is no need to trim the guardrail product again after the product is ejected.

Specifically, as shown in FIG. 5 , the residual material shearing assembly 5 includes a shearing head 6 and a push rod 7 , the shearing head 6 is vertically arranged on the lower template 2 , and the bottom of the cutting head 6 passes through the push rod 7 It is connected with the ejector rod drive plate arranged on the lower side of the lower formwork 2. The ejector rod driving plate is externally connected with a driving mechanism, which can drive the shearing head to move vertically through the ejector rod, and the sharp edge at the top surface of the shearing head can cut off the condensed injection molding liquid.

Preferably, a limiting rod 8 is further provided on the lower template 2 , and the limiting rod 8 is inserted into the bottom of the cutting head 6 and is slidably connected with the ejector rod 7 . The limit rod can limit the cutting head.

Specifically, the ejector rod driving plate is arranged on the lower side of the ejector pin fixing plate connected with the ejector mechanism, and the ejector rod 7 vertically passes through the ejector pin fixing plate and is slidably connected with the ejector pin fixing plate, the ejector rod driving plate and the ejector pin There is a gap between the fixed plates.

Specifically, as shown in FIG. 2 , four guardrail molding cavities 3 are provided between the upper formwork 1 and the lower formwork 2 and are located at four sidewall positions of the upper formwork 1 and the lower formwork 2 respectively. The forming cavity 3 is provided with a sliding core-pulling seat 9 which is slidably connected to the lower template 2 and inserted into the guardrail forming cavity 3 on the side away from the glue inlet flow channel 4. The guardrail forming cavity 3 is also provided with a sliding The guardrail installation part forming structure 10 connected with the core pulling seat 9 . The guardrail installation part forming structure 10 can form the guardrail installation part on the side of the guardrail product without secondary processing in the later stage, and can effectively improve the production efficiency of the guardrail product.

Specifically, as shown in FIG. 3 and FIG. 4 , the guardrail installation part forming structure 10 includes a forming seat 11 fixedly connected with the sliding core-pulling seat 9 , and the forming seat 11 is fixedly connected with an upper forming block 12 arranged horizontally. , the middle molding block 13 and the lower molding block 14, between the described upper molding block 12, the middle molding block 13 and the lower molding block 14, a rectangular ring-shaped mounting portion forming groove 15 is formed, and the mounting portion forming groove 15 is connected to the side of the guardrail forming cavity 3, and the lower template 2 is also provided with a translation assembly that can drive the upper forming block 12, the middle forming block 13 and the lower forming block 14 to approach or move away from the guardrail forming cavity 3 in the horizontal direction. The mounting part forming groove 15 formed by the combination of the upper forming block 12, the middle forming block 13 and the lower forming block 14 can form a rectangular ring-shaped guardrail mounting part on the side of the product. After the product is injection molded, the translation assembly can drive the forming seat 11, The sliding core-pulling seat connected to the forming seat and the upper forming block 12, the middle forming block 13 and the lower forming block 14 on the forming seat move away from the guardrail forming cavity, so that the sliding core-pulling seat, the upper forming block 12, the middle The molding block 13 and the lower molding block 14 are separated from the product, so that the product is demolded.

Specifically, the cross section of the middle molding block 13 is a square, the upper molding block 12 has an upper horizontal molding surface and a vertical molding surface, the top of the lower molding block 14 has a lower horizontal molding surface, and the upper horizontal molding surface The molding surface, the vertical molding surface and the lower horizontal molding surface are respectively arranged corresponding to the remaining three side walls of the middle molding block 13 away from the guardrail molding cavity 3 side.

Preferably, the upper horizontal molding surface, the vertical molding surface and the lower horizontal molding surface are protrudingly provided with molding bumps 16 with an isosceles trapezoidal cross-section, and the middle molding block 13 is formed with the upper horizontal molding surface, the vertical molding surface and the lower horizontal molding surface. There is a No. 1 molding groove 17 sunken inward on the three side walls corresponding to the profile, and the molding bump 16 is inserted into the No. 1 molding groove 17; the middle molding block 13 is close to the side of the guardrail molding cavity 3 The side wall is provided with two No. 2 molding grooves 18 sunken inwards. The No. 1 molding groove 17 and the No. 2 molding groove 18 can form reinforcing ribs in the guardrail installation part, thereby improving the strength of the guardrail installation part, and the molding protrusion 16 can form a concave limit slideway outside the guardrail installation part .

Specifically, the translation assembly includes a translation seat 19 fixed on the lower template 2, the forming seat 11 is arranged on the translation seat 19 and is slidably connected with the translation seat 19, and the translation seat 19 is fixedly connected with the forming seat. 11 connected linear drivers; the linear drivers can drive the forming seat to reciprocate and translate along the translation seat.

Those skilled in the art should understand that the linear drive is not shown in the figure, and the linear drive can be an oil cylinder, an air cylinder, or a linear motor.

Preferably, the forming seat 11 is also provided with a No. 1 T-shaped limit block 20 inserted into the translation seat 19, and the lower template 2 is also provided with at least two No. 2 T-shaped limit blocks inserted into the sliding core-pulling seat 9. T-shaped limit block 21. The No. 1 T-shaped limiting block 20 can limit the forming seat, and the No. 2 T-shaped limiting block 21 can limit the sliding core-pulling seat.

The working principle of the utility model is: the injection molding liquid can flow into the guardrail molding cavity through the glue inlet flow channel 4, and after the injection molding liquid is condensed, the remaining material shearing assembly can cut the remaining material and the product, as well as the remaining material and the two ends of the glue inlet flow channel. The connection is cut off, so that the guardrail product does not need to be trimmed again after the product is ejected;

The ejector rod drive plate is externally connected to the drive mechanism, which can drive the shear head to move vertically through the ejector rod. The sharp edge at the top surface of the shear head can cut off the condensed injection molding liquid. The molding structure 10 of the guardrail installation part can The guardrail installation part is formed on the side, without secondary processing in the later stage, which can effectively improve the production efficiency of guardrail products;

The mounting part forming groove 15 formed by the combination of the upper forming block 12, the middle forming block 13 and the lower forming block 14 can form a rectangular ring-shaped guardrail mounting part on the side of the product. After the product is injection molded, the translation assembly can drive the forming seat 11, The sliding core-pulling seat connected to the forming seat and the upper forming block 12, the middle forming block 13 and the lower forming block 14 on the forming seat move away from the guardrail forming cavity, so that the sliding core-pulling seat, the upper forming block 12, the middle The molding block 13 and the lower molding block 14 are separated from the product so as to facilitate product demoulding. The No. 1 molding groove 17 and the No. 2 molding groove 18 can form reinforcing ribs in the guardrail installation part, thereby improving the strength of the guardrail installation part. The forming bump 16 can form a concave limit slideway on the outside of the guardrail installation part. The linear driver can drive the forming seat to reciprocate and translate along the translation seat. The No. 1 T-shaped limit block 20 can limit the forming seat. The No. 2 T Type limit block 21 can limit the sliding core pulling seat.

The specific embodiments described herein are only examples to illustrate the spirit of the present invention. Those skilled in the technical field to which the utility model belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the utility model or go beyond the appended claims defined range.

Although this paper mostly uses the upper template 1, the lower template 2, the guardrail molding cavity 3, the glue inlet channel 4, the remaining material shearing assembly 5, the shearing head 6, the ejector rod 7, the limit rod 8, the sliding core pulling Seat 9, guardrail installation part molding structure 10, molding seat 11, upper molding block 12, middle molding block 13, lower molding block 14, mounting part molding groove 15, molding bump 16, No. 1 molding groove 17, No. 2 molding Groove 18, translation seat 19, No. 1 T-shaped limiting block 20, No. 2 T-shaped limiting block 21 etc., use these terms just to describe and explain the essence of the present utility model more conveniently; They are interpreted as any Any additional limitation is against the spirit of the present invention.

Claims (10)

1. The utility model provides a thick wall plastics guardrail injection mold with cut clout structure, includes cope match-plate pattern (1) and lower bolster (2), its characterized in that cope match-plate pattern (1) and lower bolster (2) between be equipped with a plurality of guardrail and take shape die cavity (3), still include a plurality of glue runner (4) that are used for pouring into injection molding liquid into in guardrail takes shape die cavity (3), glue runner (4) both sides and glue runner (4) and guardrail take shape the junction of die cavity (3) and still be equipped with clout shearing module (5).

2. The thick-wall plastic guardrail injection mold with the shearing excess material structure according to claim 1, wherein the excess material shearing assembly (5) comprises a shearing head (6) and a push rod (7), the shearing head (6) is vertically arranged on the lower die plate (2), and the bottom of the shearing head (6) is connected with a push rod driving plate arranged on the lower side of the lower die plate (2) through the push rod (7).

3. The injection mold for the thick-wall plastic guardrail with the shearing excess structure according to claim 2, wherein a limiting rod (8) is further arranged on the lower die plate (2), and the limiting rod (8) is inserted into the bottom of the shearing head (6) and is in sliding connection with the ejector rod (7).

4. The injection mold for thick-wall plastic guardrails with the shearing excess structure according to claim 3, wherein the ejector rod driving plate is arranged at the lower side of an ejector pin fixing plate connected with the ejection mechanism, the ejector rod (7) vertically penetrates through the ejector pin fixing plate and is in sliding connection with the ejector pin fixing plate, and a section of gap is formed between the ejector rod driving plate and the ejector pin fixing plate.

5. The thick-wall plastic guardrail injection mold with the shearing excess material structure according to claim 1, characterized in that four guardrail forming cavities (3) are arranged between the upper template (1) and the lower template (2) and are respectively positioned at four side wall positions of the upper template (1) and the lower template (2), a sliding core drawing seat (9) which is in sliding connection with the lower template (2) and is inserted into the guardrail forming cavities (3) at the inner end is arranged at one side of the guardrail forming cavities (3), and a guardrail mounting part forming structure (10) which is connected with the sliding core drawing seat (9) is further arranged at one side of the guardrail forming cavities (3).

6. The thick-wall plastic guardrail injection mold with the shearing excess material structure according to claim 5, wherein the guardrail mounting portion forming structure (10) comprises a forming seat (11) fixedly connected with a sliding core drawing seat (9), an upper forming block (12), a middle forming block (13) and a lower forming block (14) which are horizontally arranged are fixedly connected on the forming seat (11), a rectangular mounting portion forming groove (15) is formed among the upper forming block (12), the middle forming block (13) and the lower forming block (14), the mounting portion forming groove (15) is connected with the side portion of a guardrail forming cavity (3), and a translation assembly capable of driving the upper forming block (12), the middle forming block (13) and the lower forming block (14) to approach or separate from the guardrail forming cavity (3) along the horizontal direction is further arranged on the lower template (2).

7. The thick-wall plastic guardrail injection mold with the shearing excess material structure as claimed in claim 6, wherein the cross section of the middle molding block (13) is square, the upper molding block (12) is provided with an upper horizontal molding surface and a vertical molding surface, the top of the lower molding block (14) is provided with a lower horizontal molding surface, and the upper horizontal molding surface, the vertical molding surface and the lower horizontal molding surface are respectively arranged corresponding to the three other side walls of one side, far away from the guardrail molding cavity (3), of the middle molding block (13).

8. The thick-wall plastic guardrail injection mold with the shearing excess material structure according to claim 7, wherein the upper horizontal molding surface, the vertical molding surface and the lower horizontal molding surface are convexly provided with molding convex blocks (16) with isosceles trapezoid cross sections, three side walls of the middle molding block (13) corresponding to the upper horizontal molding surface, the vertical molding surface and the lower horizontal molding surface are provided with inward concave first molding grooves (17), and the molding convex blocks (16) are inserted into the first molding grooves (17).

9. The injection mold for the thick-wall plastic guardrail with the shearing excess structure as claimed in claim 8, wherein two inward concave second forming grooves (18) are formed in the side wall of the middle forming block (13) close to one side of the guardrail forming cavity (3).

10. The thick-wall plastic guardrail injection mold with the shearing excess structure according to claim 6, wherein the translation assembly comprises a translation seat (19) fixed on the lower template (2), the molding seat (11) is arranged on the translation seat (19) and is in sliding connection with the translation seat (19), and a linear driver connected with the molding seat (11) is fixedly connected on the translation seat (19);

the forming seat (11) is also provided with a first T-shaped limiting block (20) which is inserted into the translation seat (19), and the lower die plate (2) is also provided with at least two second T-shaped limiting blocks (21) which are inserted into the sliding core drawing seat (9).