WO2023024295A1

WO2023024295A1 - Angle ejector and pogo pin linkage mechanism

Info

Publication number: WO2023024295A1
Application number: PCT/CN2021/133341
Authority: WO
Inventors: 梁正华; 梁凯; 林连明; 王华良
Original assignee: 浙江凯华模具有限公司
Priority date: 2021-08-25
Filing date: 2021-11-26
Publication date: 2023-03-02
Also published as: CN113843982A

Abstract

Disclosed in the present invention is an angle ejector and pogo pin linkage mechanism, comprising an angle ejector block and an ejector rod assembly, wherein the ejector rod assembly comprises an angle ejector rod assembly and a straight ejector rod assembly; the angle ejector block is slidably connected to the angle ejector rod assembly, the sliding direction of the angle ejector block being at an angle with a moving direction of the angle ejector rod assembly; and a pogo pin linkage mechanism is integrated on the angle ejector block. The stepped angle ejector block is pushed with the angle ejector rod assembly to separate a bolt groove in a product from the pogo pin, and after the angle ejector block is separated from a first movable mold plate, the angle ejector block is completely separated from the product under the action of a guide block and a drive spring, which speeds up the mold release of products of complex shapes during an undercut treatment process. Moreover, the linkage mechanism has a simple structure, and is convenient for installation and maintenance.

Description

A kind of linkage mechanism of inclined ejector pin

technical field

The invention relates to the technical field of injection molds, in particular to a linkage mechanism of inclined ejector pins.

Background technique

Injection mold is a production tool that can repeatedly produce plastic parts or products in large quantities. This kind of mold is to form one or more cavities after assembly by forming parts, or to shape the shape of the product we need. Injection molds are the most complex structures of all plastic molds. It is the most widely used mold with the highest manufacturing and processing precision. When the injection mold is working, it must be installed on the plastic injection machine. The injection machine realizes the opening and closing of the dynamic and fixed molds, and forms the required products in the following order: mold closing, injection of melt into the cavity, pressure maintenance and cooling , Open the mold, push out the product and then close the mold. The level of mold production technology is not only an important symbol to measure the level of a country's product manufacturing, but also largely determines the country's product quality, efficiency and new product development capabilities. At present, 30% of general molds in my country and more than half of medium and high-end molds still rely on imports, of which injection molds occupy a large proportion. It can be seen that the backwardness of the mold manufacturing industry has become the bottleneck that hinders the development of my country's manufacturing industry to some extent. The development and introduction of advanced manufacturing technology is an important way to change the relatively backwardness of my country's injection mold manufacturing industry and the rapid growth of market demand. With the continuous development of my country's industry, higher and higher requirements are put forward for molds. Therefore, the demand for precision, large, complex, and long-life molds will develop faster than the total development speed.

With the advancement of machining technology, in order to provide better force structure and aerodynamic structure for injection molded parts, the shape complexity of the injection mold surface has also increased greatly. In order to ensure the release of more complex injection molded parts The convenience of the mold, the inclined ejector pin that ejects the complex curved surface in an inclined form has begun to be applied in the injection mold, and the inclined ejector is usually used to deal with the undercut during the ejection process after the injection mold product is formed. When dealing with undercuts on the inclined roof, the undercuts of the product often contain deep ribs, and the deep ribs of the product often stick to the inclined roof when they are ejected, which affects the smooth release of the product.

For example, a kind of "a step-by-step inclined roof structure" disclosed in the Chinese patent literature, its announcement number is "CN105479692A", the present invention relates to a step-by-step inclined roof structure applied in the mold, including inclined roof, Inclined ejector rod, inclined ejector seat, elastic part and guide block. The two ends of the slanting rod are respectively fixedly connected with the slanting roof and the slanting roof seat; the slanting roof seat is movably installed on the top plate, and the slanting roof seat can slide on the surface of the roof plate. The inclined ejector mechanism of the present invention divides the action of ejecting the product in the mold by the inclined ejector into two steps through the inclined plane staggered structure between the inclined ejector rod and the guide block. First, the inclined ejector ejects the product along the vertical direction, followed by the inclined ejector. Lateral core pull. Since the product leaving the mold no longer has a firm grip on the slanting top mechanism, the product demoulded by the slanting top mechanism of the present invention has small deformation and good quality.

Contents of the invention

The present invention is to solve the problem of difficult demoulding of products with relatively complex shapes when dealing with undercuts in the ejection process of injection molded products. The second inclined ejector rod pushes the stepped inclined ejector block to separate the bolt groove on the product from the spring pin. After the inclined ejector block is separated from the first movable template, the inclined ejector block is separated from the product under the action of the guide block and the driving spring. It is completely separated, which speeds up the demoulding speed of some products with complex shapes when dealing with undercuts, and has a simple structure and is convenient for installation and maintenance.

In order to achieve the above object, the present invention adopts the following technical solutions: a linkage mechanism of inclined ejector pins, comprising an inclined ejector block and a push rod assembly, the ejector rod assembly includes an inclined ejector rod assembly and a straight ejector rod assembly, and the inclined ejector block Slidingly connected with the inclined ejector rod assembly, the sliding direction of the inclined ejector block is set at an included angle with the movement direction of the inclined ejector rod assembly, and the elastic pin linkage mechanism is integrated on the inclined ejector block.

As a preference, the overall shape of the inclined top block is in an L-shaped structure and is provided with a horizontal part and an inclined part. The horizontal part and the inclined part form a part of the cavity wall of the molding cavity for molding the product. The inner side of the L-shaped inclined top block The settings are stepped.

As a preference, the described ramp assembly includes a first ramp and a second ramp, the first ramp and the second ramp are elastically connected by a first ramp; the ramp The stepped bottom of the top block is provided with a waist-shaped limit hole, and the two ends of the waist-shaped limit hole are provided with clamping limit pieces; the top of the first inclined ejector rod is provided with a limit nut, and the limit The nut is slidably connected to the waist-shaped limiting hole; the bottom of the second inclined ejector rod is connected to a slider seat, and the slider seat is slidably connected to the lower ejector rod plate of the mould.

Preferably, the inclined part of the inclined top block is provided with a molding structure for molding product bolt grooves.

The spring needle linkage mechanism includes a slide assembly and a spring needle assembly, a guide groove is arranged inside the inclined top block, a sliding limit surface is arranged at the bottom of the guide groove, and a waist-shaped hole groove is opened on the slide limit surface; The bottom of the jacking block is provided with a mounting groove for the jacking rod, and the waist-shaped limiting hole is set on the mounting groove of the jacking rod; the jacking block is fixedly connected with the jacking rod assembly through a mounting plate.

As a preference, the sliding assembly includes a sliding cylinder arranged in the inclined top block, a driving spring and a guide block are arranged inside the sliding cylinder, one end of the driving spring is provided to contact the inner wall of the inclined top block, and the driving spring The other end of the spring is fixedly connected with the guide block, and the bottom of the guide block is provided with a guide rod, and the bottom of the guide rod) is slidably connected to the waist-shaped hole groove of the sliding limit surface. There is a guide groove inside the inclined top block, and a series of sliding components are arranged in the guide groove. Because the inclined top block is affected by the force of the inclined top rod, and because one end of the driving spring is connected to the inside of the inclined top block, the action of the driving spring slides the slide and guides. The rod will move in the direction of ejection, which also drives the lifter block to separate from the product.

As a preference, the spring needle assembly includes a spring needle groove arranged in the inclined top block, a spring limit cylinder is provided at both ends of the spring needle groove, and a bolt post spring is arranged in the spring limit cylinder; it also includes The spring pin fixing hole and the sinker are arranged on the mounting plate, the spring pin fixing hole is fixed with a spring pin, and the spring pin is in contact with the spring pin groove. There is a spring pin inside the spring pin fixing hole. After the product is formed, one end of the spring pin is against the bolt groove of the product, and the other end is fixed with the spring pin fixing hole on the mounting plate. The bolt column springs on both sides of the spring pin fixing hole And the spring limit cylinder can speed up the speed at which the spring pin breaks away from the bolt groove, improving the efficiency of the entire demoulding process. The function of the mounting plate is to connect the inclined ejector rod and the spring pin. When the inclined ejector rod limit nut slides in the waist-shaped limit hole, since the mounting plate is connected with the inclined ejector rod, the spring pin will also go with the inclined ejector rod. sports.

Preferably, the straight ejector rod assembly includes a straight ejector rod and a straight ejector rod seat, and the straight ejector rod is fixedly connected to the straight ejector rod seat.

Preferably, the upper end of the straight ejector rod constitutes an integral part of the cavity wall of the product forming cavity.

As preferably, the mold applicable to the inclined ejector pin linkage mechanism includes a first movable template, a second movable template and a fixed template, and the molding of the product is formed between the first movable template, the inclined ejector block, the second movable template and the fixed template. cavity.

Preferably, the first inclined ejector rod is axially embedded in the second inclined ejector rod, the surface of the first inclined ejector rod embedded in the second inclined ejector rod part is provided with a first inclined ejector rod spring, and the first inclined ejector rod The bottom end of the rod spring is fixed on the bottom of the first inclined ejector rod, the top end of the spring of the first inclined ejector rod is fixed on the top of the second inclined ejector rod, the bottom of the second inclined ejector rod is connected to the slider seat, and the slider seat Slidingly connected to the lower ejector bar plate. The first inclined ejector rod and the second inclined ejector rod can slide up and down and be adjusted by themselves, and the position of the inclined ejector rod is adjusted together with the sliding of the slider seat.

Preferably, an upper ejector plate is provided on the upper part of the lower ejector plate, and the lower ejector plate is mounted on the lower double plate through a pin shaft. The straight ejector pin and the inclined ejector pin support the product together. During the demoulding process, the lower ejector plate drives the upper ejector plate, straight ejector seat, straight ejector pin, second inclined ejector pin, and slider seat to move together, so that the product Ejection, and then demoulding.

As a preference, several die feet are provided on the lower doubler plate, a first movable template and a second movable template are arranged on the plurality of mold feet, the first movable template and the second movable template, the fixed The template is provided with an upper double board. The lower doubler plate will also drive the upper ejector plate and the lower ejector plate to move backward, while the upper doubler plate and the fixed formwork will not move.

Preferably, the straight ejector pin penetrates through the first movable formwork, and the side of the first movable template near the straight ejector pin has a stepped structure and is in overlapping contact with the stepped ejector block. There are several convex ribs on the lower wall of the product, and grooves are also provided on the first movable template, and the two are in contact with each other.

The above-mentioned inclined ejector pin linkage mechanism includes an inclined ejector block, the first inclined ejector rod is connected to the lower part of the inclined ejector block, the top of the first inclined ejector rod is provided with a limit nut, and the bottom of the inclined ejector block is provided with a waist The limit hole, the limit nut is slidably connected to the waist-shaped limit hole, and the second lift rod is provided at the lower part of the first lift rod. The horizontal part and the inclined part on the inclined top block are close to the lower wall of the product after the product is formed, and the other side is in step-like contact with the first movable template, and the waist-shaped limit hole at the bottom of the inclined top block matches the first inclined top The limit nut on the rod, the limit nut is fixedly connected with the first inclined ejector rod, a sliding protective sleeve is provided in the waist-shaped limit hole, the limit nut slides in the waist-shaped limit hole, and the limit nut is in the waist-shaped limit hole. The two ends of the limit hole are reinforced by clamping limiters. The clamping limiter requires a certain force to open, so the first inclined ejector rod and the second inclined ejector rod will only stay at the two ends. The limit nut drives the first inclined ejector rod to move, and further drives the spring pin to break away from the bolt groove on the formed product. The design is ingenious and the structure is simple.

Therefore, the present invention has the following beneficial effects:

1. The invention greatly improves the demoulding rate for products with complex shapes such as ribs and grooves, and has a simple structure and is convenient for installation and maintenance;

2. Use the first inclined ejector rod and the second inclined ejector rod to push the stepped inclined ejector block to separate the bolt groove and the spring pin on the product. After the inclined ejector block is separated from the first movable template, the guide block and the drive Under the action of the spring, the inclined top block is completely separated from the product, the design is ingenious, and the coordination of each step is smooth.

Description of drawings

Fig. 1 is the general schematic diagram of a kind of slanted ejector pin linkage mechanism of the present invention;

Fig. 2 is the structural diagram after the fixed template and the movable template of a kind of inclined ejector linkage mechanism of the present invention are separated;

Fig. 3 is the structural diagram of the inclined ejector block and the movable template of the inclined ejector pin linkage mechanism of the present invention after separation;

Fig. 4 is the structural diagram of a kind of inclined ejector pin linkage mechanism of the present invention after demoulding completely;

Fig. 5 is a schematic diagram of the internal structure of an inclined ejector block of an inclined ejector pin linkage mechanism of the present invention;

Fig. 6 is a schematic diagram of a mounting plate of an inclined ejector pin linkage mechanism of the present invention;

In the figure, 1, product 2, upper double plate 3, fixed formwork 4, inclined top block 41, sliding cylinder 42, guide block 43, drive spring 44, guide rod 45, sliding limit surface 46, spring limit cylinder 47, Bolt column spring 48, spring pin groove 49, installation groove of inclined ejector rod 5, first movable platen 6, die foot 7, second movable platen 8, first inclined ejector rod 9, second inclined ejector rod 10, first Inclined ejector spring 11, slider seat 12, upper ejector plate 13, lower ejector plate 14, straight ejector 15, lower double plate 16 mounting plate 161, spring pin 162, sink 163, spring pin fixing hole 17, Limit nut 18, waist-shaped limit hole, 19, horizontal part 20, inclined part 21, forming structure of bolt groove 22, guide groove 23, straight push rod seat, 24, first stepped part 25, second stepped part 26. The third step.

Detailed ways

The technical solution of the present invention will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings.

Example 1:

This embodiment proposes a kind of linkage mechanism of inclined ejector pins. Referring to FIG. 1, the injection mold includes an upper doubler plate 2 and a lower doubler plate 15. Foot 6, the mold foot 6 is provided with a first movable template 5 and a second movable template 7, a lower ejector plate 13 is connected to the inner side of the upper mold foot of the lower compound plate 15, and an upper ejector plate is arranged on the lower ejector plate 13 12. The slanted ejector pin linkage mechanism of the present application is arranged on the upper ejector plate and extended to the joint of the first movable template and the second movable template. The inclined ejector pin linkage mechanism includes an inclined ejector block 4 and a ejector rod assembly, the ejector rod assembly includes an inclined ejector rod assembly and a straight ejector rod assembly, the sliding direction of the inclined ejector block and the movement direction of the inclined ejector rod assembly are set at an included angle, The spring pin linkage mechanism is integrated on the inclined top block. The inclined ejector rod assembly includes a first inclined ejector rod 8 and a second inclined ejector rod 9, the bottom of the inclined ejector block 4 is connected with the first inclined ejector rod 8, the bottom of the inclined ejector block 4 is provided with a waist-shaped limiting hole 18, the first inclined ejector bar A stop nut 17 is provided on the top of the ejector rod 8, and the stop nut 17 is slidably connected to the waist-shaped stop hole 18, and a second inclined ejector rod 9 is provided at the bottom of the first inclined ejector rod 8.

As shown in Figure 5, the overall shape of the inclined top block 4 is an L-shaped structure provided with a horizontal portion 19 and an inclined portion 20, the angle between the horizontal portion 19 and the inclined portion 20 is greater than 90 degrees, and the inner side of the inclined top block is L-shaped. A first stepped portion 24, a second stepped portion 25, and a third stepped portion 26 are arranged in a shape, and a guide groove is arranged inside between the first stepped portion and the second stepped portion, and the guide groove is provided toward the bottom of the second stepped portion. The sliding limiting surface 45 is provided with a waist-shaped hole groove on the sliding limiting surface 45 .

The spring needle linkage mechanism includes a sliding assembly and a spring needle assembly. A guide groove 22 is arranged inside the inclined top block 4, and a sliding cylinder 41 is installed inside the guiding groove of the inclined top block 4. The axis of the sliding cylinder is along the first stepped portion. The length direction of the slanting block is set along the L-shaped horizontal part parallel to the inclined top block. The drive spring 43 and the guide block 42 are arranged inside the sliding cylinder 41. The driving spring is arranged along the axial direction of the sliding cylinder. 4. The inner wall abuts, and the other end of the drive spring 43 is fixedly connected to the guide block 42. The bottom of the guide block 42 is vertically provided with a guide rod 44, and the bottom of the guide rod 44 is slidably connected in the waist-shaped hole groove of the sliding limit surface 45.

Also be provided with spring pin slot 48 in the third step part of inclined top block 4, spring pin slot 48 two ends are provided with spring limiter 46, and spring limiter 46 is provided with bolt column spring 47, and inclined top block 4 the first The bottom of the three-step part is provided with an inclined ejector rod installation groove 49, and the waist-shaped limit hole 18 is arranged in the inclined ejector rod installation groove 49, and the inclined ejector rod installation groove 49 is also provided with several threaded holes, and the screw thread The hole is for the convenience that the limiting plate 16 is connected with the threaded hole by screws, and then the limiting plate and the inclined top block are connected together. Between the pin groove 48 and the spring limiting cylinder 46 and the bolt column spring 47, a forming structure 21 for forming a product bolt groove is provided on the side facing the product forming cavity, that is, the inclined part of the inclined top block. The bolt grooves of the product are formed inside the bolt groove forming structure during the product injection molding process.

As shown in Figure 6, the inclined jacking block 4 is fixedly connected with the top of the first inclined jacking rod 8 through a mounting plate 16, and the mounting plate 16 is provided with a spring pin fixing hole 163 and a sinking groove 162, and the spring pin fixing hole 163 is fixed with a spring. The needle 161 , the spring pin 161 is in contact with the spring pin slot 48 . During the forming process of the product, the spring pin cooperates with the bolt groove of the product. The first ramp 8 is axially embedded in the second ramp 9, and the outer circumference of the first ramp 8 embedded in the second ramp 9 is provided with a first ramp spring 10, the first ramp The bottom end of the rod spring 10 is fixed on the bottom of the first inclined ejector rod 8 , and the top end of the first inclined ejector rod spring 10 is fixed on the top of the second inclined ejector rod 9 . The bottom of the second inclined ejector rod 9 is connected to a slider seat 11, and the slider seat 11 is slidably connected to the lower ejector rod plate 13 of the mould. The top of the lower ejector plate 13 is provided with an upper ejector plate 12, and the lower ejector plate 13 is also provided with a straight ejector seat 23, which is fixedly connected with a straight ejector bar 14, and the lower ejector bar plate 13 passes through a pin. The shaft is installed on the lower compound board 15. The lower doubler plate 15 is provided with a plurality of mold feet 6, and the first movable template 5 and the second movable template 7 are arranged on the several mold feet 6. A molding cavity for molding products 1 is formed between them, and an upper double plate 2 is provided on the fixed template 3 . The straight ejector rod 14 runs through the first movable template 5, the upper part of the straight ejector rod 14 is flush with the lower part of the molding cavity and forms a part of the product molding cavity for contact with the formed product, the first movable template 5 is close to the side of the straight ejector rod 14 The structure on one side is stepped and overlaps with the step-like contact of the inclined top block 4 , so as to realize the coincidence and docking of the inclined top block and the first movable formwork, and at the same time support the inclined top block 4 . The horizontal part of the 4L-shaped structure of the inclined top block and the outer side of the inclined part form a part of the molding cavity, which is used to form the shape of the product during the product molding process, and at the same time, it is close to the lower wall of the product after the product is formed.

The waist-shaped limiting hole 18 at the bottom of the slanting jack block cooperates with the limiting nut 17 on the first ramming rod 8, the limiting nut 17 is fixedly connected with the first ramming rod 8, and the waist-shaped limiting hole 18 is provided with a sliding protection Set, the limit nut 17 slides in the waist-shaped limit hole 18, and the limit nut 17 is provided with snap buckles at the two ends of the waist-shaped limit hole for reinforcement, and the snap buckle needs a certain force to open, so the first The first inclined ejector rod and the second inclined ejector rod will only stay at the two end positions, and the limit nut drives the first inclined ejector rod to move, further driving the spring pin 161 to break away from the bolt groove. One end of the spring pin 164 is against the bolt groove of the product, and the other end is fixed with the spring pin fixing hole 163 on the mounting plate. The springs on both sides of the spring pin fixing hole and the spring limit cylinder can speed up the spring pin leaving the bolt groove speed, the function of the mounting plate 16 is to connect the inclined ejector rod and the spring pin. It will move together with the inclined ejector rod.

The straight ejector pin 14 and the inclined ejector pin support the product together. During the demoulding process, the lower ejector pin plate 13 drives the upper ejector pin plate 14, the straight ejector pin seat 23, the straight ejector pin 14, the second inclined ejector pin 9, and the slider seat 11 to move together, so that the product is ejected, and then demoulded. The demoulding of the inclined ejector rod assembly is to use the second inclined ejector rod and the first inclined ejector rod to push the stepped inclined ejector block, so that the spring needle is separated from the bolt groove on the formed product, and the inclined ejector block is separated from the first inclined ejector block. One move template separation. After the inclined jacking block 4 is separated from the first movable template 5, the inclined jacking block is completely separated from the product under the action of the guide block 42 and the driving spring 43. The design is ingenious and the steps are coordinated smoothly.

With reference to Fig. 1, firstly, a kind of slanted ejector pin linkage mechanism of the present invention is in the mold clamping state, and the product is formed in the molding cavity between the fixed template 3, the first movable template 5, the inclined ejector block 4 and the second movable template 7, and The first movable template is provided with grooves for forming the ribs on the product, the ribs of the product coincide with the grooves on the first movable template, and the straight ejector rod 14 also passes through the top of the first movable template to withstand the product The lower wall, the straight ejector rod 14 and the inclined ejector block 4 together support the weight of the product in the whole process of demoulding. On the left side, the bolt column spring 47 in the spring limiting cylinder 46 is in a state of being compressed but not damaged at this time, and the driving spring 43 connected to the sliding cylinder 41 in the inclined jack block 4 is also not subjected to force at this time. .

Referring to Figure 2, the upper double plate 2 and the fixed template 3 are separated from the first movable template 5 and the second movable template 7. At this time, the upper wall of the product is completely exposed, but the lower wall of the product is still connected to the first movable template 5 and the second movable template. The template 7 and the inclined top block 4 are bonded together.

Referring to Fig. 3, at this time, the lower ejector plate 13 starts to drive the slider seat 11 to start ejection movement, and the force is decomposed, which is regarded as two component forces to the right and upward. First, analyze the force moving to the right, and the slider seat 11 drives The second jacking rod 9 and the first jacking rod 8 move to the right, but because the jacking rod and the jacking block are partially slidably connected by the stop nut 17 and the waist-shaped stop hole 18, at this time the jacking rod is connected to the jacking block. Block 4 has the effect of power to the right, but inclined top block 4 remains motionless due to the effect of inertia, and the limit nut 17 on the first inclined ejector rod 8 slides in waist-shaped limit hole 18, because mounting plate 16 and The first inclined ejector rod 8 is connected by screws, so the mounting plate 16 and the spring pin 161 connected to it move to the right together, and the spring pin 161 accelerates under the force of the bolt column spring 47 in the spring limiting cylinder 46. The speed of the ejection is increased until the spring pin 161 fully pops out of the bolt groove, and the limit nut 17 on the first inclined ejector rod 8 slides to the rightmost end in the waist-shaped limit hole 18. The buckle needs a certain force to open, so the first inclined ejector rod 8 and the second inclined ejector rod 9 will only stay at the two end positions, and the limit nut 17 drives the first inclined ejector rod 8 to move, further driving the spring needle 161 is separated from the bolt groove, which is ingeniously designed and simple in structure. Secondly, it is the component force in the upward direction. The first inclined ejector rod 8 and the second inclined ejector rod 9 are driven to push out in the upward direction, and the lower wall of the product is separated from the first movable template 5 and the second movable template 7. The stepped structure on the right side of the top block 4 is completely separated from the stepped structure of the first movable template, and the ribs of the product are also separated from the grooves of the first movable template. Referring to Fig. 4, on the whole, at this time, the inclined jacking block 4 has been subjected to the oblique upward force of the first inclined jacking rod 8, so there is an upward movement trend. A series of sliding devices are provided, that is, a sliding cylinder 41, a guide block 42, a driving spring 43 and a guide rod 44. Since the inclined jacking block 4 is affected by the force of the inclined jacking bar, and because one end of the driving spring 43 is connected to the interior of the inclined jacking block 4, The other end of the drive spring 43 is connected to the slide tube 41. After receiving the elastic force of the drive spring, the drive spring makes the slide tube 41 and the guide rod 44 move to the right. Next, there will be no left and right lateral movement before it is separated, so the inclined top block will move to the right and separate from the product left and right, so that the demoulding of the product is completed.

Claims

A kind of inclined ejector pin linkage mechanism is characterized in that it comprises an inclined ejector block (4) and a push rod assembly, and the ejector rod assembly includes an inclined ejector rod assembly and a straight ejector rod assembly, and the inclined ejector block (4) is connected with the inclined ejector rod assembly. The ejector rod assembly is slidably connected, and the sliding direction of the inclined ejector block (4) is set at an included angle with the movement direction of the inclined ejector rod assembly. The inclined ejector block (4) is integrated with a spring pin linkage mechanism.
According to claim 1, a kind of linkage mechanism for inclined ejector pins, characterized in that, the overall shape of said inclined ejector block (4) is L-shaped and provided with a horizontal portion (19) and an inclined portion (20). The part (19) and the inclined part (20) form an integral part of the cavity wall of the molding cavity for molding products, and the inner side of the L-shape of the inclined top block is set in a stepped shape.
According to claim 2, a kind of inclined ejector linkage mechanism, characterized in that, said inclined ejector rod assembly comprises a first inclined ejector rod (8) and a second inclined ejector rod (9), the first inclined ejector rod The rod (8) is elastically connected to the second slanting rod (9) through a first slanting rod spring (10); the stepped bottom of the slanting block (4) is provided with a waist-shaped limiting hole (18) , the two ends of the waist-shaped limit hole (18) are provided with clamping limiters; the top of the first inclined ejector rod (8) is provided with a limit nut (17), and the limit nut (17 ) is slidably connected to the waist-shaped limiting hole (18); the bottom of the second inclined ejector rod (9) is connected to a slider seat (11), and the slider seat (11) is slidably connected to the lower ejector plate of the mould. (13) on.
The linkage mechanism of the inclined ejector pin according to claim 2, characterized in that, the inclined part (20) of the inclined ejector block is provided with a forming structure (21) for forming the bolt groove of the product.
According to claim 1, the linkage mechanism of the inclined ejector pin is characterized in that, the described elastic pin linkage mechanism comprises a sliding assembly and an elastic needle assembly, and a guide groove (22) is arranged inside the inclined ejector block (4), The bottom of the guide groove is provided with a sliding limit surface (45), and a waist-shaped hole groove is provided on the sliding limit surface (45); the bottom of the inclined jack block (4) is provided with an inclined ejector rod installation groove (49), The waist-shaped limiting hole (18) is set on the jacking rod installation groove (49); the jacking block (4) is fixedly connected with the jacking rod assembly through a mounting plate (16).
According to claim 5, a linkage mechanism of inclined ejector pins, characterized in that, said sliding assembly comprises a sliding cylinder (41) arranged in the inclined ejector block (4), and the interior of said sliding cylinder (41) A drive spring (43) and a guide block (42) are provided, one end of the drive spring (43) is provided with a contact with the inner wall of the inclined top block (4), and the other end of the drive spring (43) is in contact with the guide block (42). ) is fixedly connected, the bottom of the guide block (42) is provided with a guide rod (44), and the bottom of the guide rod (44) is slidably connected to the waist-shaped hole groove of the sliding limit surface (45).
According to claim 5, a kind of linkage mechanism of inclined ejector pins is characterized in that, said elastic pin assembly comprises an elastic pin slot (48) arranged in the inclined ejector block (4), said elastic pin slot ( 48) Both ends are provided with a spring limit cylinder (46), and the spring limit cylinder (46) is provided with a bolt column spring (47); it also includes a pin fixing hole (163) arranged on the mounting plate (16) ) and the sinker (162), the elastic pin (161) is fixed in the elastic pin fixing hole (163), and the elastic pin (161) is in contact with the elastic pin groove (48).
A linkage mechanism for inclined ejector pins according to any one of claims 1 to 7, characterized in that, the straight ejector rod assembly comprises a straight ejector rod (14) and a straight ejector rod seat (23), and the straight ejector rod assembly (23) Push rod (14) is fixedly connected on the straight push rod seat (23).
The linkage mechanism of inclined ejector pins according to claim 7, characterized in that, the upper end of the straight ejector rod (14) constitutes an integral part of the cavity wall of the product forming cavity.
According to any one of claims 1 to 7, a kind of inclined ejector pin linkage mechanism is characterized in that, the mold applicable to the inclined ejector pin linkage mechanism includes a first movable template (5), a second movable template ( 7) and the fixed template (3), the forming cavity of the product is formed between the first movable template (5), the inclined top block (4), the second movable template (7) and the fixed template (3).