阅读说明：本技术 一种吹塑管子模内切割模具结构 (Blow molding pipe mould internal cutting mould structure ) 是由 陈增宝 王海滨 任诚芬 汪平 韩传龙 王峰 宦昌虎 于 2019-10-29 设计创作，主要内容包括：本发明公开了一种吹塑管子模内切割模具结构,包括：合模状态下在其内部形成型腔的吹塑模具,其中：吹塑模具内部且位于靠近型腔的一端设有可沿型腔径向方向滑动的第一切刀、以及位于靠近型腔远另一端并可沿型腔径向方向滑动的第二切刀；吹塑模具上安装有用于推动第一切刀沿型腔径向方向滑动的第一驱动机构和用于推动第二切刀沿型腔径向方向滑动的第二驱动机构。本发明省去了后期截断工序,节省了整个产品生产周期,降低了生产成本,达到了低能高效的生产目的。(The invention discloses a blow molding pipe mould internal cutting mould structure, comprising: a blow mold having a cavity formed therein in a closed state, wherein: a first cutter capable of sliding along the radial direction of the cavity and a second cutter capable of sliding along the radial direction of the cavity are arranged at one end, close to the cavity, of the interior of the blow molding mold and are positioned at the other end, close to the far end of the cavity, of the blow molding mold; and a first driving mechanism for pushing the first cutter to slide along the radial direction of the cavity and a second driving mechanism for pushing the second cutter to slide along the radial direction of the cavity are arranged on the blow molding mould. The invention saves the later truncation process, saves the whole production period of the product, reduces the production cost and achieves the aims of low-energy and high-efficiency production.)

1. A blow molded pipe in-mold cutting die structure, comprising: a blow mold having a cavity formed therein in a closed state, wherein:

a first cutter (1) which can slide along the radial direction of the cavity and a second cutter (2) which is positioned close to the other end far away from the cavity and can slide along the radial direction of the cavity are arranged at one end, close to the cavity, in the blow molding mold;

the blow molding mould is provided with a first driving mechanism (3) for pushing the first cutter (1) to slide along the radial direction of the cavity and a second driving mechanism (4) for pushing the second cutter (2) to slide along the radial direction of the cavity.

2. The structure of the cutting die in the blow molding pipe mold according to claim 1, characterized in that the cutting edges of the first cutter (1) and the second cutter (2) are in a closed annular structure, and in the mold closing state, the cutting edges of the first cutter (1) and the second cutter (2) are respectively coaxial with the mold cavity, and the cutting edges of the first cutter (1) and the second cutter (2) are part of the inner wall of the mold cavity.

3. A blow-molded tubular in-mold cutting mold structure according to claim 2, wherein the blow-molded mold comprises a first mold body (5) and a second mold body (6), and the first mold body (5) and the second mold body (6) are provided with mold cavities; the first cutter (1) and the second cutter (2) respectively comprise a left cutter body (a) and a right cutter body (b), the left cutter body (a) of the first cutter (1) and the right cutter body (b) of the second cutter (2) are both installed in the first mold body (5), and the right cutter body (b) of the first cutter (1) and the right cutter body (b) of the second cutter (2) are both installed in the second mold body (6); in a matched die state, a die cavity on the first die body (5) and a die cavity on the second die body (6) are matched with each other to form a die cavity, a left cutter body (a) and a right cutter body (b) in the first cutter (1) are matched with each other to form a cutting edge which is coaxial with the die cavity between the left cutter body and the right cutter body, and a left cutter body (a) and a right cutter body (b) in the second cutter (2) are matched with each other to form a cutting edge which is coaxial with the die cavity between the left cutter body and the right cutter body.

4. A blow-molded pipe in-mold cutting die structure according to claim 3, wherein the inner wall of the cavity of the first die body (5) is fitted with a first insert member (7) and a second insert member (8), the inner wall of the cavity of the second die body (6) is fitted with a third insert member (9) and a fourth insert member (10), and the first insert member (7), the second insert member (8), the third insert member (9) and the fourth insert member (10) are respectively provided with a sipe communicated with the corresponding cavity; the left cutter body (a) in the first cutter (1) is positioned in the cutter groove of the first insert part (7), and the right cutter body (b) in the second cutter (2) is positioned in the cutter groove of the third insert part (9); the left cutter body (a) in the second cutter (2) is positioned in the cutter groove of the second insert part (8), and the right cutter body (b) in the second cutter (2) is positioned in the cutter groove of the fourth insert part (10).

5. A blow molded tube in-mold cutting die structure as claimed in claim 4 wherein the first insert part (7), the second insert part (8), the third insert part (9) and the fourth insert part (10) are each beryllium copper.

6. A blow molded pipe in-mold cutting mold structure according to any one of claims 1 to 5 wherein the first driving mechanism (3) comprises a first oil cylinder or a first air cylinder, the first oil cylinder or the first air cylinder is connected with the first cutter (1); preferably, the second driving mechanism (4) comprises a second oil cylinder or a second air cylinder, and the ejection end of the second oil cylinder or the second air cylinder is connected with the second cutter (2).

7. A blow-molded tubular in-mold cutting die structure according to claim 3, characterized in that the first driving mechanism (3) comprises two first oil cylinders, one of the first oil cylinders is installed on the first die body (5), the other first oil cylinder is installed on the second die body (6), and the ejection end of the first oil cylinder installed on the first die body (5) extends into the first die body (5) and is connected with the left cutter body (a) in the first cutter (1), and the ejection end of the first oil cylinder installed on the second die body (6) extends into the second die body (6) and is connected with the right cutter body (b) in the first cutter (1).

8. A blow molded pipe in-mold cutting die structure according to claim 3, wherein the first driving mechanism (3) comprises two first air cylinders, one of the first air cylinders is installed on the first die body (5), the other first air cylinder is installed on the second die body (6), the ejection end of the first air cylinder installed on the first die body (5) extends into the first die body (5) and is connected with the left cutter body (a) in the first cutter (1), and the ejection end of the first air cylinder installed on the second die body (6) extends into the second die body (6) and is connected with the right cutter body (b) in the first cutter (1).

9. A blow-molded tubular in-mold cutting die structure as claimed in claim 3, wherein the second driving mechanism (4) comprises two second oil cylinders, one of the two second oil cylinders is installed on the first die body (5), the other second oil cylinder is installed on the second die body (6), and the ejection end of the second oil cylinder installed on the first die body (5) extends into the first die body (5) and is connected with the left cutter body (a) in the second cutter (2), and the ejection end of the second oil cylinder installed on the second die body (6) extends into the second die body (6) and is connected with the right cutter body (b) in the second cutter (2).

10. A blow molded tube in-mold cutting die structure according to claim 3, wherein the second driving mechanism (4) comprises two second air cylinders, one of the two second air cylinders is installed on the first die body (5), the other second air cylinder is installed on the second die body (6), the ejection end of the second air cylinder installed on the first die body (5) extends into the first die body (5) and is connected with the left cutter body (a) in the first cutter (1), and the ejection end of the second air cylinder installed on the second die body (6) extends into the second die body (6) and is connected with the right cutter body (b) in the first cutter (1).

Technical Field

The invention relates to the technical field of molds, in particular to a blow molding pipe in-mold cutting mold structure.

Background

The blow molding pipe for the automobile is an essential component of an automobile engine system, the blow molding product in the automobile industry occupies a large proportion, and the blow molding product has the inherent advantages of high production efficiency and easy batch production along with the continuous improvement of the performance of the plastic material, so that the blow molding product is more and more widely applied in the automobile industry. With the acceleration of the update of the automobile industry and the higher and higher requirements of people on the comfort of automobiles, the development period and the quality of products increasingly put forward higher requirements on the development of molds, and new opportunities and challenges are brought to the development of blow molds.

Disclosure of Invention

In order to solve the technical problems in the background art, the invention provides a blow molding pipe in-mold cutting mold structure, which aims to save the whole production period of a product to the maximum extent and achieve the purposes of low energy and high efficiency.

The invention provides a blow molding pipe in-mold cutting mold structure, which comprises: a blow mold having a cavity formed therein in a closed state, wherein:

a first cutter capable of sliding along the radial direction of the cavity and a second cutter capable of sliding along the radial direction of the cavity are arranged at one end, close to the cavity, of the interior of the blow molding mold and are positioned at the other end, close to the far end of the cavity, of the blow molding mold;

and a first driving mechanism for pushing the first cutter to slide along the radial direction of the cavity and a second driving mechanism for pushing the second cutter to slide along the radial direction of the cavity are arranged on the blow molding mould.

Preferably, the cutting edges of the first cutter and the second cutter are of closed annular structures, and in the die closing state, the cutting edges of the first cutter and the second cutter are respectively coaxial with the die cavity, and the cutting edges of the first cutter and the second cutter are part of the inner wall of the die cavity.

Preferably, the blow mold comprises a first mold body and a second mold body, and mold cavities are arranged on the first mold body and the second mold body; the first cutter and the second cutter respectively comprise a left cutter body and a right cutter body, the left cutter body of the first cutter and the right cutter body of the second cutter are both arranged in the first die body, and the right cutter body of the first cutter and the right cutter body of the second cutter are both arranged in the second die body; in a die closing state, a die cavity on the first die body and a die cavity on the second die body are matched with each other to form a die cavity, a left cutter body and a right cutter body in the first cutter are matched with each other to form a cutting edge which is coaxial with the die cavity between the left cutter body and the right cutter body, and a left cutter body and a right cutter body in the second cutter are matched with each other to form a cutting edge which is coaxial with the die cavity between the left cutter body and the right cutter body.

Preferably, a first insert part and a second insert part are embedded in the inner wall of the die cavity of the first die body, a third insert part and a fourth insert part are embedded in the inner wall of the die cavity of the second die body, and the first insert part, the second insert part, the third insert part and the fourth insert part are respectively provided with a knife slot communicated with the corresponding die cavity; the left cutter body in the first cutter is positioned in the cutter groove of the first insert part, and the right cutter body in the second cutter is positioned in the cutter groove of the third insert part; the left cutter body in the second cutter is positioned in the cutter groove of the second insert part, and the right cutter body in the second cutter is positioned in the cutter groove of the fourth insert part.

Preferably, the first insert part, the second insert part, the third insert part and the fourth insert part are made of beryllium copper.

Preferably, the first driving mechanism comprises a first oil cylinder or a first air cylinder, and the first oil cylinder or the first air cylinder is connected with the first cutter.

Preferably, the second driving mechanism comprises a second oil cylinder or a second air cylinder, and the ejection end of the second oil cylinder or the second air cylinder is connected with the second cutter.

Preferably, the first driving mechanism comprises two first oil cylinders, one of the two first oil cylinders is mounted on the first die body, the other first oil cylinder is mounted on the second die body, the ejection end of the first oil cylinder mounted on the first die body extends into the first die body and is connected with the left cutter body in the first cutter, and the ejection end of the first oil cylinder mounted on the second die body extends into the second die body and is connected with the right cutter body in the first cutter.

Preferably, the first driving mechanism comprises two first air cylinders, one of the first air cylinders is mounted on the first die body, the other first air cylinder is mounted on the second die body, the ejection end of the first air cylinder mounted on the first die body extends into the first die body and is connected with the left cutter body in the first cutter, and the ejection end of the first air cylinder mounted on the second die body extends into the second die body and is connected with the right cutter body in the first cutter.

Preferably, the second driving mechanism comprises two second oil cylinders, one of the two second oil cylinders is mounted on the first die body, the other second oil cylinder is mounted on the second die body, the ejection end of the second oil cylinder mounted on the first die body extends into the first die body and is connected with the left cutter body in the second cutter, and the ejection end of the second oil cylinder mounted on the second die body extends into the second die body and is connected with the right cutter body in the second cutter.

Preferably, the second driving mechanism comprises two second air cylinders, one of the two second air cylinders is mounted on the first die body, the other second air cylinder is mounted on the second die body, the ejection end of the second air cylinder mounted on the first die body extends into the first die body and is connected with the left cutter body in the first cutter, and the ejection end of the second air cylinder mounted on the second die body extends into the second die body and is connected with the right cutter body in the first cutter.

According to the invention, the first driving mechanism is matched with the first cutter, and the second driving mechanism is matched with the second cutter so as to directly cut off waste materials at two ends of the workpiece in the blow molding die after blow molding, so that a later cutting-off procedure is omitted, the whole production period of the product is saved, the production cost is reduced, and the purposes of low-energy and high-efficiency production are achieved.

Drawings

FIG. 1 is a schematic structural diagram of an in-mold cutting mold structure for blow-molded pipes according to the present invention in an open state;

FIG. 2 is a schematic view of an assembly of the first cutter and the first driving mechanism in the mold structure for in-mold cutting of the blow-molded tube according to the present invention;

FIG. 3 is a schematic view of the assembly of the second cutter and the second driving mechanism in the mold structure for in-mold cutting of the blow-molded tube according to the present invention;

FIG. 4 is a partial cross-sectional view of a blow-molded tube in-mold cutting die structure according to the present invention in a closed position;

FIG. 5 is a first enlarged view of a portion of FIG. 4;

FIG. 6 is a second enlarged view of a portion of FIG. 4;

fig. 7 is a schematic diagram of the working principle of the structure of the mold for cutting the blow-molded tube in the invention.

Detailed Description

The technical solution of the present invention will be described in detail below with reference to specific examples.

As shown in fig. 1-7, fig. 1 is a schematic structural view of an in-mold cutting mold structure for blow-molded tubes according to the present invention in an open state; FIG. 2 is a schematic view of an assembly of the first cutter and the first driving mechanism in the mold structure for in-mold cutting of the blow-molded tube according to the present invention; FIG. 3 is a schematic view of the assembly of the second cutter and the second driving mechanism in the mold structure for in-mold cutting of the blow-molded tube according to the present invention; FIG. 4 is a partial cross-sectional view of a blow-molded tube in-mold cutting die structure according to the present invention in a closed position; FIG. 5 is a first enlarged view of a portion of FIG. 4; FIG. 6 is a second enlarged view of a portion of FIG. 4; fig. 7 is a schematic diagram of the working principle of the structure of the mold for cutting the blow-molded tube in the invention.

Referring to fig. 1-7, the present invention provides a mold structure for in-mold cutting of a blow molded pipe, comprising: a blow mold having a cavity formed therein in a closed state, wherein:

and a first cutter 1 which can slide along the radial direction of the cavity and a second cutter 2 which is positioned close to the far end of the cavity and can slide along the radial direction of the cavity are arranged at one end of the blow molding mould which is positioned close to the cavity. And a first driving mechanism 3 for pushing the first cutter 1 to slide along the radial direction of the cavity and a second driving mechanism 4 for pushing the second cutter 2 to slide along the radial direction of the cavity are arranged on the blow molding mould. When the blow molding is completed, the first driving mechanism 3 is matched with the first cutter 1, and the second driving mechanism 4 is matched with the second cutter 2 to cut off waste materials at two ends of a workpiece in the cavity, so that a later stage cutting-off process is removed, the purposes of saving the production cycle of the whole product and reducing the production cost are achieved.

In this embodiment, the cutting edges of the first cutter 1 and the second cutter 2 are of a closed annular structure, and in the mold closing state, the cutting edges of the first cutter 1 and the second cutter 2 are respectively coaxial with the cavity, and the cutting edges of the first cutter 1 and the second cutter 2 are both a part of the inner wall of the cavity. When in cutting, the first driving mechanism 3 is used for pushing the first cutter 1 to move so as to cut one end of the workpiece in the cavity, and the second driving mechanism 4 is used for pushing the second cutter 2 to move so as to cut the other end of the workpiece in the cavity.

In this embodiment, the blow mold includes a first mold body 5 and a second mold body 6, and mold cavities are disposed on both the first mold body 5 and the second mold body 6; the first cutter 1 and the second cutter 2 respectively comprise a left cutter body a and a right cutter body b, the left cutter body a of the first cutter 1 and the second cutter 2 is installed in the first mold body 5, the right cutter body b of the first cutter 1 and the second cutter 2 is installed in the second mold body 6, in a mold closing state, a mold cavity on the first mold body 5 and a mold cavity on the second mold body 6 are matched with each other to form a mold cavity, the left cutter body a of the first cutter 1 and the right cutter body b thereof are matched with each other to form a cutting edge coaxial with the mold cavity between the first cutter body and the second cutter body, and the left cutter body a of the second cutter 2 and the right cutter body b thereof are matched with each other to form a cutting edge coaxial with the mold cavity between the first cutter body and the second cutter body. So that the left and right bodies a and b of the first and second cutters 1 and 2 can be separated as the first and second casings 5 and 6 are opened, and as the first and second casings 5 and 6 are closed and closed.

In this embodiment, the first driving mechanism 3 includes two first oil cylinders, one of the two first oil cylinders is mounted on the first die body 5, and an ejection end of the first oil cylinder mounted on the first die body 5 extends into the first die body 5 and is connected with the left cutter body a of the first cutter 1; the other first oil cylinder is arranged on the second die body 6, and the ejection end of the first oil cylinder arranged on the second die body 6 extends into the second die body 6 and is connected with the right cutter body b in the first cutter 1. The second driving mechanism 4 comprises two second oil cylinders, one of the two second oil cylinders is arranged on the first die body 5, and the ejection end of the second oil cylinder arranged on the first die body 5 extends into the first die body 5 and is connected with the left cutter body a in the second cutter 2; the other second oil cylinder is arranged on the second die body 6, and the ejection end of the second oil cylinder arranged on the second die body 6 extends into the second die body 6 and is connected with the right cutter body b in the second cutter 2.

When the blow molding production is carried out, the first mold body 5 and the second mold body 6 are in a mold closing state in advance, the sealing slide blocks 11 at two ends of the first mold body 5 and the second mold body 6 are opened to form a tubular cavity with an upper end and a lower end being opened and side walls being sealed, then a blow molding machine extrudes a pipe blank with a proper material diameter and a proper material thickness according to the requirement, and the lower port sucks air to draw the pipe blank into the cavity of the blow molding mold according to the space shape of a pipe cavity; and then, sealing the two ends of the cavity by using a sealing slide block 11, blowing air, maintaining pressure and cooling, and cutting the two ends of the pipe fitting in the cavity by using a first cutter 1 and a second cutter 2 after cooling to a proper temperature. Then the first die body 5 and the second die body 6 are respectively in a die opening state, and the product and the waste are taken out.

In this embodiment, the first insert member 7 and the second insert member 8 are fitted to the inner wall of the cavity of the first mold body 5, and the third insert member 9 and the fourth insert member 10 are fitted to the inner wall of the cavity of the second mold body 6, so that the side surfaces of the first insert member 7, the second insert member 8, the third insert member 9, and the fourth insert member 10 close to the corresponding cavities form a part of the inner wall of the cavity when the molds are closed. The first insert part 7, the second insert part 8, the third insert part 9 and the fourth insert part 10 are respectively provided with a cutter groove communicated with the corresponding mold cavity; the left cutter body a in the first cutter 1 is positioned in the cutter groove of the first insert part 7, and the right cutter body b in the second cutter 2 is positioned in the cutter groove of the third insert part 9; the left blade body a of the second cutter 2 is located in the pocket of the second insert part 8, and the right blade body b of the second cutter 2 is located in the pocket of the fourth insert part 10.

In this embodiment, the first insert part 7, the second insert part 8, the third insert part 9, and the fourth insert part 10 are made of beryllium copper, so that the insert parts have good wear resistance.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.