Reset protection guide wedge mechanism

Abstract

The reset protection guide wedge mechanism belongs to the field of thermoplastic molding molds and is mainly used for accurate reset of the slider after the insert is installed to ensure smooth reset of the mold slider and protect the service life of the mold slider. The mechanism uses the action of spring A5 to prompt the reset column 6 to apply thrust to the slider seat 7 to avoid mold damage caused by the return of the slider seat 7. Instead of using pins, square pins 16 are used to increase the contact area introduced by the square pins 16 to avoid the increase of point contact pressure, prevent damage to the mold, and save mold costs. The action of spring B17 on the square pin 16 is used to achieve the elastic introduction of the square pin 16 into the guide wedge 3, simplify the mold structure, ensure the smooth movement of the mold, improve production efficiency, and reduce the defect rate.

Description

Technical Field

[0001] The invention belongs to the field of thermoplastic plastic molding dies and relates to a reset protection guide wedge mechanism, which is mainly used for accurately resetting a slider after an insert is installed, ensuring a smooth reset action of the mold slider and protecting the service life of the mold slider. Background Art

[0002] Plastic products are widely used in daily life and industrial production. In order to meet special requirements, various inserts are often set on plastic products. The molding and mass production of plastic products rely on injection molds. For plastic products with lateral inserts, the inserts are often installed on the slider mechanism for easy installation and resetting. The reset of the slider after the insert is installed becomes a difficulty for such molds. Generally, a mold mechanism is adopted in which a hand-pushed slider is pre-returned and then the inclined wedge is pressed and finally reset. This mechanism has strict requirements on the position positioning of the manual slider pre-return. If the operator manually pushes the slider to pre-return with deviation, sometimes there will be a phenomenon of retreat, which will cause the slider to be misaligned when in contact with the inclined wedge, thereby causing damage to the mold, thereby increasing mold costs and reducing production efficiency. Summary of the invention

[0003] The purpose of the present invention is to provide a reset protection guide wedge mechanism, which relies on the action of a spring on a reset column to achieve reset protection for a slider seat, utilizes the introduction and guidance of a square pin to ensure stable operation of the guide wedge mechanism and smooth production of plastic products.

[0004] The technical problem to be solved by the present invention is to provide a reset protection guide wedge mechanism to solve the problems existing in the installation of inserts during the production process of plastic product molds with inserts, ensure the accurate reset of the insert installation slider, enable the product to be demoulded smoothly and meet the technical requirements and usage requirements.

[0005] The technical scheme of the present invention is: the reset protection guide wedge mechanism comprises: a fixed die plate 1, a fixed die insert 2, a guide wedge 3, a stop bolt 4, a spring A5, a reset column 6, a slider seat 7, a slider insert 8, a slider insert 9, a movable die plate 10, a movable die insert 11, a pressure plate 12, a wear-resistant plate 13, a ball head screw 14, a baffle 15 and a square pin 16; the connection relationship is that the fixed die insert 2 is in surface contact with the fixed die plate 1 and is tightly matched and fixed by bolts, the guide wedge 3 is in surface contact with the fixed die plate 1 and is tightly matched and fixed by bolts, the guide wedge 3 is in clearance match with the movable die plate 10, the stop bolt 4 is threadedly connected and fixed with the guide wedge 3, the spring A5 is in clearance match with the guide wedge 3, the spring A5 is in surface contact with the stop bolt 4 and the reset column 6, and the reset protection guide wedge mechanism comprises: a fixed die plate 1, a fixed die insert 2, a fixed die insert 11, a pressure plate 12, a wear-resistant plate 13, a ball head screw 14, a baffle 15 and a square pin 16; the connection relationship is that the fixed die insert 2 is in surface contact with the fixed die plate 1 and is tightly matched and fixed by bolts, the guide wedge 3 is in surface contact with the fixed die plate 1 and is tightly matched and fixed by bolts, the guide wedge 3 is in clearance match with the movable die plate 10, the stop bolt 4 is threadedly connected and fixed with the guide wedge 3, the spring A5 is in surface contact with the stop bolt 4 and the reset column 6, and the reset protection guide wedge mechanism comprises: a fixed die plate 1, a fixed die insert 2, a fixed die insert 11, a fixed die insert 11, a pressure plate 12, a wear-resistant plate 13, a ball head The position column 6 is in surface contact and sliding cooperation with the guide wedge 3, the slider block 8 is in surface contact and tightly cooperated with the slider seat 7 and is locked and fixed by bolts, the slider block 9 is in surface contact and tightly cooperated with the slider block 8 and is connected by a hanging table, in the mold closing state, the guide wedge 3 is in surface contact and tightly cooperated with the slider seat 7, the movable mold block 11 is in surface contact and tightly cooperated with the movable template 10 and is locked and fixed by bolts, the pressure plate 12 is in surface contact and tightly cooperated with the movable template 10 and is locked and fixed by bolts, the slider seat 7 is in surface contact and sliding cooperation with the pressure plate 12 and is limited by the hanging table, the wear-resistant plate 13 is in surface contact and clearance cooperation with the movable template 10 and is locked and fixed by bolts, the slider seat 7 is in surface contact and sliding cooperation with the wear-resistant plate 13, the ball head top screw 14 is in clearance cooperation with the wear-resistant plate 13, and the ball head top screw 14 is threaded and fixed with the movable template 10, The square pin 16 head is provided with a rounded corner, the square pin 16 and the slider seat 7 are in surface contact and sliding cooperation, the baffle 15 and the slider seat 7 are in surface contact and clearance cooperation and are locked and fixed by bolts, the baffle 15 and the spring B17 are in surface contact and limited, and the spring B17 is in surface contact with the square pin 16; the guide wedge 3 is provided with a fixed square table, a central boss, a first wedging surface, a second wedging surface and a guide groove, the fixed square table is in surface contact and tightly matched with the fixed template 1 and limited, the central boss is arranged below the fixed square table, the first wedging surface is arranged on the front of the central boss of the guide wedge 3, the second wedging surface is arranged on both sides of the guide wedge 3, the guide groove is arranged on both sides of the central boss, and the angle between the guide groove and the horizontal plane is the same as the angle between the square pin and the horizontal plane; The slider seat 7 is provided with a square pin hole, a baffle plate sinking platform, a third wedge tightening surface, a fourth wedge tightening surface, a triangular through groove and a hanging platform. The square pin hole and the baffle plate sinking platform are in two places, which are respectively arranged on both sides of the slider seat 7. The third wedge tightening surface is arranged at the back of the slider seat 7, the fourth wedge tightening surface is arranged at the center of the slider seat 7 and is recessed in the third wedge tightening surface arranged on the slider seat 7, and the triangular through groove is arranged at the bottom of the slider seat 7; in the mold closing state, the first wedge tightening surface arranged on the guide inclined wedge 3 is tightly matched and limited with the fourth wedge tightening surface arranged on the slider seat 7, the second wedge tightening surface arranged on the guide inclined wedge 3 is tightly matched and limited with the third wedge tightening surface arranged on the slider seat 7, and the ball head top screw 14 is in contact with the triangular through groove surface arranged on the slider seat 7 and limited;The pre-reset of the slider seat 7 is that the slider seat 7 is manually pushed to reset after the insert is installed in the slider insert 9, and the ball head top screw 14 stops and limits when it contacts the triangular through groove set on the slider seat 7; the precise reset of the slider seat 7 is that the reset column 6 is in a pop-up state under the action of the spring A5 during the mold closing process, and the reset column 6 contacts the fourth wedge tightening surface set on the slider seat 7 and applies a thrust to prevent the slider seat 7 from retreating, and the central boss set on the guide wedge 3 contacts and applies a thrust to the square pin 16, the spring B17 is compressed and the square pin 16 retreats, and the guide When the guide groove provided on the inclined wedge 3 contacts the rounded corner provided on the square pin 16, the lower pin 16 slides into the guide groove provided on the inclined wedge 3 under the action of the elastic force of the spring B17, and at the same time, the slider seat 7 applies a reaction force to the reset column 6, compressing the spring A5 to return the reset column 6, and the first wedge-tightening surface provided on the inclined wedge 3 and the fourth wedge-tightening surface provided on the slider seat 7 are closely matched, and at the same time, the second wedge-tightening surface provided on the inclined wedge 3 and the third wedge-tightening surface provided on the slider seat 7 are closely matched, and the inclined wedge 3 has a double limit on the slider seat 7. ;

[0006] The beneficial effects of the present invention are as follows: the reset protection guide wedge mechanism utilizes the action of the spring A5 to prompt the reset column 6 to apply a thrust to the slider seat 7, thereby avoiding damage to the mold caused by the return of the slider seat 7. Instead of using a pin, a square pin 16 is used, the purpose of which is to increase the contact area introduced by the square pin 16 to avoid an increase in point contact pressure, prevent damage to the mold, and save mold costs. The action of the spring B17 on the square pin 16 is utilized to achieve elastic introduction of the square pin 16 into the guide wedge 3, thereby simplifying the mold structure, ensuring a smooth mold movement process, improving production efficiency, and reducing the defective rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] The following is a detailed description of the embodiments with reference to the accompanying drawings.

[0008] Figure 1 This is the assembly diagram of the reset protection guide wedge mechanism Figure 1 .

[0009] Figure 2 This is the mold opening diagram of the reset protection guide wedge mechanism Figure 2 .

[0010] Figure 3 This is the mold opening diagram of the reset protection guide wedge mechanism Figure 3 .

[0011] Figure 4 This is a schematic diagram of the reset protection guide wedge mechanism Figure 4 .

[0012] Figure 5 This is a schematic diagram of the guide wedge in the reset protection guide wedge mechanism. Figure 5 .

[0013] Figure 6 This is a cross-sectional diagram of the slider seat in the reset protection guide wedge mechanism. Figure 6 .

[0014] In the figure: 1 fixed platen; 2 fixed die insert; 3 guide wedge; 4 stop bolt; 5 spring A; 6 reset column; 7 slider seat; 8 slider insert; 9 slider insert; 10 movable platen; 11 movable die insert; 12 pressure plate; 13 wear-resistant plate; 14 ball head top screw; 15 baffle; 16 square pin; 17 spring B. DETAILED DESCRIPTION

[0015] The specific embodiments of the invention are described in detail below with reference to technical texts and drawings.

[0016] When assembling the mold, the fixed mold insert 2 is installed in the mold cavity processed by the fixed mold plate 1, and the bolt passes through the fixed mold plate 1 to lock and fix the fixed mold insert 2. The reset column 6 is installed in the inclined hole processed by the guide wedge 3. The spring A5 is installed in the inclined hole processed by the guide wedge 3 and contacts the reset column 6. The stop bolt 4 is installed in the threaded hole processed by the guide wedge 3 (see Figure 5 ), the guide wedge 3, the stop bolt 4, the spring A5 and the reset column 6 are assembled as a whole in the square hole processed by the fixed template 1, the bolt passes through the guide wedge 3 to lock and fix it on the fixed template 1, the slider insert 9 is assembled in the cavity processed by the slider insert 8 and is limited by the hanging platform, the slider insert 8 and the slider insert 9 are assembled as a whole in the sinking platform processed by the slider seat 7, the bolt passes through the slider seat 7 to lock and fix the slider insert 8, the square pin 16 is assembled in the square hole processed by the slider seat 7, the spring B17 is assembled in the sinking hole behind the square pin 16, the baffle 15 is assembled in the sinking platform on both sides of the slider seat 7 to limit the spring B17, and the bolt passes through the baffle 15 to lock and fix it on the slider seat 7 (see Figure 4 , 6 ), the movable mold insert 11 is mounted in the mold cavity processed on the movable mold plate 10, the ball head screw 14 is mounted in the threaded hole processed on the movable mold plate 10, the wear-resistant plate 13 is mounted in the mold cavity processed on the movable mold plate 10, the bolts pass through the wear-resistant plate 13 to lock and fix it, the slider seat 7 and the slider insert 8 are mounted as a whole in the mold cavity processed on the movable mold plate 10, the pressure plate 12 is mounted on both sides of the slider seat 7 and is limited by the hanging platform and slidably matched, and the bolts pass through the pressure plate 12 to lock and fix it (see Figure 1 , 3 ).

[0017] The movement process of the reset protection guide wedge mechanism is: the assembled fixed mold part and movable mold part are in the mold opening state, the reset column 6 of the fixed mold part equipped on the guide wedge 3 is in the pop-up state under the action of the spring A5, the operator of the movable mold part sequentially installs the inserts in the insert installation grooves processed on the slider insert 9, and the operator pushes the slider seat 7 to pre-reset it. When the ball head top screw 14 contacts the triangular through groove set on the slider seat 7, the pre-reset action ends (see Figure 3 ), the fixed mold part and the movable mold part move towards each other, the reset column 6 first contacts the fourth wedge tightening surface set on the slider seat 7 and applies a thrust to it to ensure the position of the slider seat 7 and prevent it from retreating, then the central boss set on the guide wedge 3 contacts the square pin 16 mounted on the slider seat 7, and at the same time pushes the square pin 16 back, at this time the spring B17 is compressed, when the edge of the guide groove set on the guide wedge 3 contacts the fillet set on the head of the square pin 16, under the action of the spring B17, the lower pin 16 slides into the guide groove set on the guide wedge 3 and guides it, at the same time the slider seat 7 applies a reaction force to the reset column 6, the reset column 6 performs a reset movement, at this time the spring A5 is compressed, the fixed mold part and the movable mold part continue to approach, the first wedge tightening surface set on the guide wedge 3 is tightly matched with the fourth wedge tightening surface set on the slider seat 7, at the same time the second wedge tightening surface set on the guide wedge 3 is tightly matched with the third wedge tightening surface set on the slider seat 7, and the mold closing process is completed (see Figure 1 , 3 ).

[0018] The above is a superior implementation mode of the present invention. It should be pointed out that for technicians in the technical field to which the present invention belongs, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. Reset protection guide wedge mechanism, characterized by The structure comprises: a fixed die plate (1), a fixed die insert (2), a guide wedge (3), a stop bolt (4), a spring A (5), a reset column (6), a slider seat (7), a slider insert (8), a slider insert (9), a movable die plate (10), a movable die insert (11), a pressure plate (12), a wear-resistant plate (13), a ball head screw (14), a baffle (15) and a square pin (16); the connection relationship is that the guide wedge (3) and the fixed die plate (1) are in surface contact and tightly matched and are locked and fixed by bolts, the stop bolt (4) and the guide wedge (3) are threadedly connected and fixed, the spring A (5) and the guide wedge (3) are in clearance match, the spring A (5) is in surface contact with the stop bolt (4) and the reset column (6), and the reset column (6) and the guide wedge (3) are in surface contact. The slider insert (8) and the slider seat (7) are in contact and sliding fit, and are locked and fixed by bolts. The slider insert (9) and the slider insert (8) are in contact and tight fit, and are connected by a hanging table. The slider seat (7) and the pressure plate (12) are in contact and sliding fit, and are limited by the hanging table. The slider seat (7) and the wear plate (13) are in contact and sliding fit. The ball head top screw (14) and the movable template (10) are threadedly connected and fixed. The square pin (16) is provided with a rounded corner on the head. The square pin (16) and the slider seat (7) are in contact and sliding fit. The baffle plate (15) and the slider seat (7) are in contact and clearance fit, and are locked and fixed by bolts. The baffle plate (15) and the spring B (17) are in contact and limited, and the spring B (17) and the square pin (16) are in contact. The guide wedge (3) is on the upper A fixed square platform, a central boss, a first wedging surface, a second wedging surface and a guide groove are provided. The fixed square platform is in surface contact with the fixed template (1) to fit tightly and limit the position. The central boss is provided below the fixed square platform. The first wedging surface is provided on the front side of the central boss of the guide inclined wedge (3). The second wedging surface is provided on both sides of the guide inclined wedge (3). The guide groove is provided on both sides of the central boss. The angle between the guide groove and the horizontal plane is the same as the angle between the square pin and the horizontal plane. The slider seat (7) is provided with a square pin hole, a baffle plate sinking platform, a third wedging surface, a fourth wedging surface, a triangular through groove and a hanging platform. The square pin hole and the baffle plate sinking platform are in two places, which are respectively provided on both sides of the slider seat (7). The third wedging surface is provided at the rear of the slider seat (7). The fourth wedging surface is arranged at the center of the slider seat (7) and is recessed from the third wedging surface arranged on the slider seat (7), and the triangular through groove is arranged at the bottom of the slider seat (7); in the mold closing state, the first wedging surface arranged on the guide inclined wedge (3) is tightly matched with and limited by the fourth wedging surface arranged on the slider seat (7), the second wedging surface arranged on the guide inclined wedge (3) is tightly matched with and limited by the third wedging surface arranged on the slider seat (7), and the ball head top screw (14) contacts and limits the triangular through groove surface arranged on the slider seat (7); the slider seat (7) is pre-reset by manually pushing the slider seat (7) to reset after the insert is installed on the slider insert (9), and the ball head top screw (14) stops and limits when it contacts the triangular through groove arranged on the slider seat (7);The slider seat (7) is precisely reset in that, during the mold closing process, the reset column (6) is in a pop-up state under the action of the spring A (5), the reset column (6) contacts the fourth wedge-tightening surface provided on the slider seat (7) and applies a thrust to prevent the slider seat (7) from retreating, the central boss provided on the guide wedge (3) contacts and applies a thrust to the square pin (16), the spring B (17) is compressed and the square pin (16) retreats, and the guide groove provided on the guide wedge (3) contacts the fillet provided on the square pin (16). (17) Under the action of the elastic force, the lower pin (16) slides into the guide groove provided on the guide wedge (3), and at the same time, the slider seat (7) applies a reaction force to the reset column (6), compressing the spring A (5) to return the reset column (6), and the first wedge-tightening surface provided on the guide wedge (3) and the fourth wedge-tightening surface provided on the slider seat (7) are closely matched, and at the same time, the second wedge-tightening surface provided on the guide wedge (3) and the third wedge-tightening surface provided on the slider seat (7) are closely matched, and the guide wedge (3) has a double limit on the slider seat (7). ;

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