CN112297342A

CN112297342A - Telescopic hold-down mechanism for double-color mold

Info

Publication number: CN112297342A
Application number: CN202010909854.7A
Authority: CN
Inventors: 娄振; 邹强
Original assignee: Kunshan Hongyongsheng Mould Co ltd
Current assignee: Kunshan Hongyongsheng Mould Co ltd
Priority date: 2020-09-02
Filing date: 2020-09-02
Publication date: 2021-02-02
Anticipated expiration: 2040-09-02
Also published as: CN112297342B

Abstract

The invention discloses a telescopic hold-down mechanism for a double-color mold, which comprises a connecting rod, an action block, a telescopic mechanism, a hold-down block and a base, wherein the action block is arranged on the connecting rod; the base is arranged on the movable mold core, and the movable mold core is used for forming a bicolor product; a pressing block is arranged on the base, a pressing tongue is arranged at the position, close to the double-color product, of the pressing block and used for pressing the double-color product, and a main sliding groove is formed in the tail of the pressing block; the action block comprises a telescopic groove, a telescopic mechanism is arranged on the telescopic groove of the action block, a main sliding strip is arranged on the telescopic mechanism, and the action block is matched with the main sliding groove through the main sliding strip; the top of the action block is provided with a connecting rod, and the connecting rod is connected with a power mechanism. The structure is convenient to disassemble, assemble and replace in production and maintenance, particularly, accessories of the telescopic pressing mechanism are easy to damage in long-term production and are easy to manufacture and replace, so that the service life of the whole die is prolonged, the utilization rate of the die is improved, and the production cost of the product is reduced.

Description

Telescopic hold-down mechanism for double-color mold

Technical Field

The invention relates to the technical field of mold design and manufacture, in particular to a telescopic pressing mechanism for a double-color mold.

Background

In order to realize multifunction or multiple purposes of the product, the product has a complex structural shape design, wherein the product comprises a plurality of structures such as lock catches or curved surface invaginations and the like, bosses at the edge of the product and the like; in addition, the appearance of the current popular product is diversified, and the color is compositely embedded and manufactured by adopting double-color injection molding.

Two common modes of double-color injection molding are provided, one mode is the rubber coating mold molding, and the rubber coating mold is formed by two times of injection molding instead of two plastic materials which are not necessarily formed by injection molding on the same injection molding machine; and after the product is taken out from one set of mould, the product is put into another set of mould for secondary injection moulding. Therefore, typically, such molding processes are accomplished with two sets of molds, without the need for a special two-color injection molding machine.

The other is double-color mold molding, which is a mold that two plastic materials are injected on the same injection molding machine and molded twice, but the product is only demoulded once. This molding process, also known as two-shot molding, is usually accomplished by a single mold and requires a special two-shot injection molding machine, which generally includes two cavities and two cores, one part of which is injected into one cavity, and then the other part is injected by rotating the movable mold part 180 degrees with the injection molding machine. The double-color mold is increasingly popular in the market at present, the appearance of the product can be more beautiful by the process, the color can be easily changed without spraying, but the manufacturing cost is high, and the technical requirement is high. The common characteristics of the two multi-color injection molding dies are that the number of male dies and female dies is large, the structure of the die is complex, the die in a movable die 180-degree rotation mode needs to rotate during working, and the injection molding machine is required to have a larger working space.

However, the two-color injection molds on the market at present all involve the replacement of a product from a first-time molding mold to a second-time molding mold, and the taking, mounting and fixing of the product during the replacement are realized by special pressing mechanisms, and the pressing mechanisms have the problems of complicated structure, poor integral firmness, no interchangeability and inaccurate positioning easily in use. Therefore, a telescopic pressing mechanism for a two-color mold is designed to solve the technical problems.

Disclosure of Invention

In view of the above, an object of the present invention is to overcome the defects in the prior art, and to provide a telescopic pressing mechanism for a two-color mold, which has strong versatility, simple structure and easy operation.

In order to achieve the purpose, the invention provides a telescopic pressing mechanism for a double-color mold, which comprises a connecting rod, an action block, a telescopic mechanism, a pressing block and a base, wherein the action block is arranged on the connecting rod; the base is arranged on the movable mold core, and the movable mold core is used for forming a bicolor product; a pressing block is arranged on the base, a pressing tongue is arranged at a position, close to the double-color product, of the pressing block, the pressing tongue is used for pressing the double-color product, and a main sliding groove is formed in the tail of the pressing block; the action block comprises a telescopic groove, a telescopic mechanism is arranged on the telescopic groove of the action block, a main sliding strip is arranged on the telescopic mechanism, and the action block is matched with the main sliding groove for use through the main sliding strip; the top of the action block is provided with a connecting rod, and the connecting rod is connected with a power mechanism. The power mechanism is an oil cylinder, a motor, a spring block, an air cylinder and other elements capable of providing power.

Furthermore, the telescopic mechanism comprises main sliding strips, elastic blocks and guide posts, wherein a plurality of pairs of guide holes used in a matched mode are formed in the two main sliding strips, the guide posts penetrate through the guide holes to connect the two main sliding strips in a sliding mode, namely the two main sliding strips can freely slide on the guide posts, one ends of the elastic blocks are arranged on the opposite inner sides of the main sliding strips, and the elastic blocks are used in a matched mode in pairs; the guide post is five, the elastic block is four, telescopic machanism has the function of adjusting two main draw runner interval. Due to the structural arrangement, when the two main sliding strips are subjected to inward compression acting force, the two main sliding strips are close to each other, so that the distance between the two main sliding strips is reduced; when the force is released, the two main sliding strips are far away from each other under the action of the outward force of the elastic block to restore the free state.

Furthermore, the action block also comprises an inclined side surface and an action surface, the two telescopic grooves are symmetrically arranged on two sides of the inclined side surface, the inclined side surface is positioned on one side, close to the compression block, of the action block, and an included angle theta is formed between the inclined side surface and the extension surface of the action surface; the inner side wall of each telescopic groove is provided with an elastic hole, a counter bore and a guide hole, the two main sliding strips pass through the guide posts and penetrate through the guide holes to be arranged in the two telescopic grooves of the action block respectively, and the other end of the elastic block is arranged in the elastic hole.

The countersunk head hole is provided with a plurality of countersunk head nails penetrating through the main sliding strip, the countersunk head nails are provided with sliding sleeves, the inclined side surface is provided with a locking hole, and the locking holes are internally provided with locking nails. Due to the structural arrangement, the telescopic mechanism is fully fixed on the action block, and the telescopic mechanism can continuously act and smoothly slide in the using process.

Preferentially, an oblique angle surface is arranged at an opening of a main sliding groove of the pressing block, and an oblique angle surface matched with the oblique angle surface for use is arranged at an outer angle of the main sliding strip. Such structure setting, when the effect piece area telescopic machanism was close to the main spout of compact heap, the scarf of telescopic machanism's main draw runner earlier with the bevel face contact of main spout, under the effort of the pressurized of each other, two main draw runners inwards shrink and draw close, follow main draw runner and get into main spout fast, improved the action efficiency of compact heap, and reduced frictional wear each other.

Furthermore, a secondary slide bar and a positioning groove are further arranged on two outer sides, close to the secondary slide surface of the base, of the pressing block, and the positioning groove is formed in the middle area of the secondary slide bar and divides the secondary slide bar into a plurality of sections; a secondary sliding groove and a limiting hole are further formed in the two sides, close to the seat top surface of the pressing block, of the base, a limiting pin is arranged in the limiting hole, and the limiting pin is located in the middle area of the secondary sliding groove and is matched with the positioning groove for use; the slave sliding groove is matched with the slave sliding strip for use;

the pressing block is also provided with a pressing pin, the pressing pin vertically penetrates through the secondary sliding surface, and the front end part of the pressing pin is in a spring cylinder shape; and a pressing groove matched with the pressing pin for use is arranged on the top surface of the seat. Such structure setting, from the draw runner when sliding around in following the spout on the compact heap, the spacer pin interlude in the spacing hole of both sides is in the constant head tank on the base, and gliding distance around the effective control compact heap prevents that the compact heap from moving forward too many and leads to the tongue that presses excessively to hinder double-colored product to and prevent that the compact heap from moving forward too many and lead to pressing mutually between the mould.

Preferably, the seat top surface is an inclined surface, and an included angle formed between the seat top surface and the seat bottom surface of the base is

An included angle formed between the slave sliding surface and the main sliding surface at the tail part of the pressing block is omega, the top surface of the seat is parallel to the slave sliding surface, and the inclined side surface is parallel to the main sliding surface; when the seat is used, the seat top surface and the slave sliding surface are attached together to slide mutually, and the inclined side surface and the master sliding surface are attached together to slide mutually.

Preferably, the included angle theta, the included angle omega and the included angle

All are acute angle structures.

Preferably, the included angle Ω is 60 ° to 85 °, and more preferably 70 ° to 80 °. The reason for setting the larger value of the included angle omega is that the pressing block has larger thickness, shorter moving space and slower moving speed, the impact force of the pressing block on the limiting pin and the pressing pin is reduced, and the positioning position of the pressing tongue is accurate when enough pressing force is applied to the double-color product.

Preferably, the tail of the base is provided with a concave clearance groove near the action block, the clearance groove is used for collecting the front end of the action block, and meanwhile, the pressing tongue can be effectively prevented from moving forwards due to excessive forward movement of the pressing block to press double-color products and press between dies.

Compared with the prior art, the invention has the following beneficial effects:

1. when the two main sliding strips of the telescopic pressing mechanism are subjected to inward compression acting force, the two main sliding strips are close to each other, so that the distance between the two main sliding strips is reduced; when the force is released, the two main sliding strips are far away from each other under the action of the outward force of the elastic block to restore the free state. The structure is convenient to disassemble, assemble and replace in production and maintenance, particularly, accessories of the telescopic pressing mechanism are easy to damage in long-term production and are easy to manufacture and replace, so that the service life of the whole die is prolonged, the utilization rate of the die is improved, and the production cost of the product is reduced.

2. Through setting up the structure setting of bevel face and setting up the scarf on main draw runner on the main spout of compact heap, when effect piece area telescopic machanism is close to the main spout of compact heap, the bevel face of telescopic machanism's main draw runner earlier with the bevel face contact of main spout, under the effort of the pressurized of each other, two main draw runners are to the internal contraction draw close, follow main draw runner and get into main spout fast, the action efficiency of compact heap has been improved, and reduce frictional wear each other.

3. Through still set up the compact pin on the compact heap and set up on the base and compress tightly the groove cooperation to when the follow draw runner slides from the spout in on the compact heap, the spacer pin interlude in the spacing hole in both sides is in the constant head tank on the base, and gliding distance around the effective control compact heap prevents that the compact heap from moving forward too much and leads to the excessive crushing of tongue double-colored product, and prevents that the compact heap from moving forward too much and lead to mutual crushing between the mould.

Drawings

FIG. 1 is a schematic view of a pressing product of a telescopic pressing mechanism for a two-color mold according to the present invention;

FIG. 2 is an assembly view of a retractable hold-down mechanism for a two-color mold according to the present invention;

FIG. 3 is an assembled cross-sectional view of a telescopic hold-down mechanism for a two-color mold according to the present invention;

FIG. 4 is a disassembled view of a telescopic pressing mechanism for a two-color mold according to the present invention;

FIG. 5 is a perspective view of an action block of the retractable hold-down mechanism for a two-color mold according to the present invention;

FIG. 6 is a schematic view of a telescopic mechanism of the telescopic pressing mechanism for the two-color mold according to the present invention;

fig. 7 is a diagram showing the operating state of the telescoping mechanism of the telescoping press mechanism for a two-color mold according to the present invention.

The labels in the figure are: 1-a connecting rod; 2-action block, 21-telescoping mechanism, 212-elastic block, 213-guide column, 214-locking nail, 215-countersunk nail, 216-sliding sleeve, 22-telescoping groove, 222-elastic hole, 225-countersunk hole, 23-oblique side face, 211, 231-guide hole, 234-lock hole, 24-main slide bar, 241-oblique plane and 25-action plane; 3-base, 31-cavity, 32-auxiliary chute, 33-limit pin, 34-clearance groove, 35-compaction groove, 36-limit hole, 37-base bottom surface, 38-base top surface; 4-a pressing block, 41-a pressing tongue, 42-a slave sliding strip, 43-a positioning groove, 44-a master sliding groove, 441-an oblique angle surface, 45-a pressing pin, 46-a slave sliding surface and 47-a master sliding surface; 5-moving mould core; 6-two-color product.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples, so that those skilled in the art can fully understand the technical contents of the present invention. It should be noted that the specific embodiments described herein are only for explaining the present invention and are not used to limit the present invention.

In the description of the present invention, it is to be understood that the terms "vertical," "central," "left," "right," "upper," "lower," "top," "bottom," "inner," "outer," "front," "rear," "leading," "trailing," and the like are used in relative terms or positional relationships, and are used merely for convenience in describing and simplifying the invention based on the orientations and positional relationships shown in the drawings, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be considered limiting of the invention.

With reference to fig. 1-4, the invention provides a telescopic pressing mechanism for a two-color mold, which comprises a connecting rod 1, an action block 2, a telescopic mechanism 21, a pressing block 4 and a base 3; the base 3 is arranged on a movable mould core 5, and the movable mould core 5 is used for forming a double-color product 6; a pressing block 4 is arranged on the base 3, a pressing tongue 41 is arranged at the position, close to the double-color product 6, of the pressing block 4, the pressing tongue 41 is used for pressing the double-color product 6, and a main sliding groove 44 is arranged at the tail of the pressing block 4; the action block 2 comprises a telescopic groove 22, a telescopic mechanism 21 is arranged on the telescopic groove 22 of the action block 2, a main sliding strip 24 is arranged on the telescopic mechanism 21, and the action block 2 is matched with the main sliding groove 44 through the main sliding strip 24; the top of the action block 2 is provided with a connecting rod 1, the connecting rod 1 is connected with a power mechanism (not shown), and the power mechanism is an oil cylinder, a motor, a spring block, an air cylinder and other elements capable of providing power.

As shown in fig. 6 and 7, the telescopic mechanism 21 includes main slides 24, elastic blocks 212 and guide posts 213, wherein a plurality of pairs of

guide holes

211, 231 used in pairs are provided on the two main slides 24, the plurality of guide posts 213 penetrate through the

guide holes

211, 231 to connect the two main slides 24 in a sliding manner, that is, the two main slides 24 can freely slide on the plurality of guide posts 213, one end of the plurality of elastic blocks 212 is provided on the opposite inner side of the main slides 24, and the elastic blocks 212 are used in pairs; the telescopic mechanism 21 has the function of adjusting the distance between the two main sliding strips 24; five guide posts 213 are provided, the number of the elastic blocks 212 is four, and the material can be a spring, a rubber block or a nylon block. Due to the structural arrangement, when the two main sliding strips are subjected to inward compression acting force, the two main sliding strips are close to each other, so that the distance between the two main sliding strips is reduced; when the force is released, the two main sliding strips are far away from each other under the action of the outward force of the elastic block to restore the free state.

As shown in fig. 3 and 4, the action block 2 further includes an inclined side surface 23 and an action surface 25, the two telescopic slots 22 are symmetrically arranged on two sides of the inclined side surface 23, the inclined side surface 23 is located on one side of the action block 2 close to the pressing block 4, and an included angle θ is formed between the inclined side surface 23 and an extension surface of the action surface 25; the inner side wall of the telescopic slot 22 is provided with an elastic hole 222, a counter bore 225 and

guide holes

211 and 231, the two main slide bars 24 pass through the

guide holes

211 and 231 through a plurality of guide posts 213 and are respectively arranged in the two telescopic slots 22 of the action block 2, and the other end of the elastic block 212 is arranged in the elastic hole 222. Countersunk nails 215 penetrating through the main sliding strip 24 are arranged on the countersunk holes 225, sliding sleeves 216 are arranged on the plurality of countersunk nails 215, locking holes 234 are arranged on the inclined side surface 23, and locking nails 214 are arranged in the plurality of locking holes 234. Due to the structural arrangement, the telescopic mechanism is fully fixed on the action block, and the telescopic mechanism can continuously act and smoothly slide in the using process.

As shown in fig. 4, 6 and 7, an opening of the main sliding groove 44 of the pressing block 4 is provided with an oblique surface 441, and an outer corner of the main sliding strip 24 is provided with a chamfer surface 241 used in cooperation with the oblique surface 441. Such structure setting, when the effect piece area telescopic machanism was close to the main spout of compact heap, the scarf of telescopic machanism's main draw runner earlier with the bevel face contact of main spout, under the effort of the pressurized of each other, two main draw runners inwards shrink and draw close, follow main draw runner and get into main spout fast, improved the action efficiency of compact heap, and reduced frictional wear each other.

As shown in fig. 3, 4 and 5, the seat top surface 38 is provided as an inclined surface 23, and the seat top surface 38 forms an included angle with the seat bottom surface 37 of the base 3

An included angle formed between the slave sliding surface 46 and the master sliding surface 47 at the tail part of the pressing block 4 is omega, the seat top surface 38 is parallel to the slave sliding surface 46, and the inclined side surface 23 is parallel to the master sliding surface 47; in use, the seat top surface 38 and the secondary slide surface 46 are engaged and slide relative to each other, and the inclined side surface 23 and the primary slide surface 47 are engaged and slide relative to each other. The included angle theta, the included angle omega and the included angle

All the structures are acute angles, and the value of the included angle omega is 60-85 degrees, more preferably 70-80 degrees. The reason for setting the larger value of the included angle omega is that the pressing block has larger thickness, shorter moving space and slower moving speed, the impact force of the pressing block on the limiting pin and the pressing pin is reduced, and the positioning position of the pressing tongue is accurate when enough pressing force is applied to the double-color product.

As a further improvement of the present invention, as shown in fig. 3 and 4, the pressing block 4 is further provided with a slave slide 42 and a positioning groove 43 near the two outer sides of the slave slide surface 46 of the base 3, the positioning groove 43 is arranged in the middle area of the slave slide 42, and the slave slide 42 is divided into a plurality of sections; the two sides of the base 3 close to the seat top surface 38 of the pressing block 4 are also provided with a secondary chute 32 and a limiting hole 36, a limiting pin 33 is arranged in the limiting hole 36, and the limiting pin 33 is positioned in the middle area of the secondary chute 32 and is matched with the positioning groove 43; the slave chute 32 cooperates with the slave slide 42.

A pressing pin 45 is further arranged on the pressing block 4, the pressing pin 45 vertically penetrates through the secondary sliding surface 46, the front end portion of the pressing pin 45 is in a spring cylindrical shape, and the pressing pin 45 can be a spring ball; the seat top surface 38 is provided with a hold-down groove 35 for cooperating with a hold-down pin 45. Such structure setting, from the draw runner when sliding around in following the spout on the compact heap, the spacer pin interlude in the spacing hole of both sides is in the constant head tank on the base, and gliding distance around the effective control compact heap prevents that the compact heap from moving forward too many and leads to the tongue that presses excessively to hinder double-colored product to and prevent that the compact heap from moving forward too many and lead to pressing mutually between the mould.

As shown in fig. 2 and 3, the rear part of the base 3 near the action block 2 is further provided with a concave clearance groove 34 for collecting the front end of the action block, and simultaneously, the double-color product and the crush injury between the dies can be effectively prevented from being crushed due to the forward movement of the tongue depressor caused by the excessive forward movement of the pressing block.

The working principle of the telescopic pressing mechanism is as follows: firstly, the base 3 is installed on the movable mould core 5, and the secondary slide bar 42 of the compact block 4 is installed in the secondary slide groove 44 of the base 3 as shown in fig. 2 and 4; the telescopic mechanism 21 is arranged in a telescopic groove 22 (as the upper area of fig. 4) of the action block 2, when the two main sliding strips 24 are subjected to inward compression acting force, the two main sliding strips 24 are close to each other, so that the distance between the two main sliding strips 24 is reduced; when the force is released, the two main slides 24 move away from each other under the action of the outward force of the elastic block 212 to restore the free state (as shown in fig. 7);

secondly, in the mold closing process, the pressing block 4 mounted on the movable mold core is located on the base 3, the auxiliary slide 42 of the pressing block is located in the auxiliary slide groove 32, and when the movable mold core 5 drives the pressing block 4 and the base 3 to gradually approach the fixed mold core (not shown), the main slide 24 (or the action block 2 mounted on the power mechanism) of the telescoping mechanism 21 of the action block 2 mounted on the fixed mold side (not shown) gradually approaches the main slide groove 44 of the pressing block 4. In the process, included angles theta, omega and omega exist among the action block 2, the pressing block 4 and the base 3

(as shown in fig. 3), the first contact between the inclined surface 241 of the main slide bar 24 and the inclined surface 441 of the main slide groove 44 causes the main slide bars to slide due to the interaction force between the inclined surfaces 441 and 241The bars 24 are retracted (fig. 7) so that the main slide bar 24 slides into the main chute 44 in a compressed condition;

during this process, the mold is further closed, the main slide 24 slides further in the main slide groove 44 to push the pressing block 4 to move toward the side close to the two-color product 6, and the pressing tongue 41 gradually presses the two-color product 6 (see fig. 1). And (5) completing product compaction.

Its reverse working process does, and at the mould opening in-process, the movable mould core drives base 3 and opens, because the block 2 block of effect is on compact heap 4 to compact heap 4 leaves double-colored product 6 gradually, and the main draw runner 24 of effect block 2 slides out from main spout 44 gradually thereupon, and effect block 2 also further drives compact heap 4 and leaves double-colored product 6 and get back to initial position.

When the two main sliding strips of the telescopic pressing mechanism are subjected to inward compression acting force, the two main sliding strips are close to each other, so that the distance between the two main sliding strips is reduced; when the force is released, the two main sliding strips are far away from each other under the action of the outward force of the elastic block to restore the free state. The structure is convenient to disassemble, assemble and replace in production and maintenance, particularly, accessories of the telescopic pressing mechanism are easy to damage in long-term production and are easy to manufacture and replace, so that the service life of the whole die is prolonged, the utilization rate of the die is improved, and the production cost of the product is reduced.

It should be noted that the above-mentioned preferred embodiments are merely illustrative of the technical concepts and features of the present invention, and are intended to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. A telescopic pressing mechanism for a double-color mold comprises a connecting rod (1), an action block (2), a pressing block (4) and a base (3), wherein the base (3) is arranged on a movable mold core (5), and the movable mold core (5) is used for molding a double-color product (6); the method is characterized in that:

the pressing block (4) is arranged on the base (3), a pressing tongue (41) is arranged at the position, close to the bicolor product (6), of the pressing block (4), the pressing tongue (41) is used for pressing the bicolor product (6), and a main sliding groove (44) is arranged at the tail of the pressing block (4);

the action block (2) comprises a telescopic groove (22) and a telescopic mechanism (21) arranged on the telescopic groove (22), a main sliding strip (24) is arranged on the telescopic mechanism (21), and the action block (2) is matched with the main sliding groove (44) through the main sliding strip (24); the telescopic mechanism (21) is arranged in the telescopic groove (22) through a guide column (213), and the telescopic mechanism (21) has the function of adjusting the distance between the two main sliding strips (24);

the top of the action block (2) is provided with the connecting rod (1), and the connecting rod (1) is connected with a power mechanism.

2. The telescopic pressing mechanism for a two-color mold according to claim 1, characterized in that:

the telescopic mechanism (21) further comprises an elastic block (212) and guide posts (213), a plurality of pairs of guide holes (211, 231) used in a matched mode are formed in the two main sliding strips (24), the guide posts (213) penetrate through the guide holes (211, 231) to connect the two main sliding strips (24) in a sliding mode, and one end of the elastic block (212) is arranged on the inner side of the main sliding strips (24).

3. The telescopic pressing mechanism for a two-color mold according to claim 1, characterized in that:

action piece (2) still include oblique side (23) and action face (25), two flexible groove (22) symmetry sets up oblique side (23) both sides, oblique side (23) are located being close to of action piece (2) compact heap (4) morning one side, oblique side (23) with form the contained angle between the extension face of action face (25) and be theta.

4. The telescopic pressing mechanism for a two-color mold according to claim 2, characterized in that:

the inner side wall of each telescopic groove (22) is provided with an elastic hole (222), a counter bore (225) and guide holes (211 and 231), the two main sliding strips (24) penetrate through the guide holes (211 and 231) through a plurality of guide columns (213) and are arranged in the two telescopic grooves (22) of the action block (2), and the other end of the elastic block (212) is arranged in the elastic hole (222).

5. The telescopic pressing mechanism for a two-color mold according to claim 4, characterized in that:

countersunk head nails (215) penetrating through the main sliding strip (24) are arranged on the countersunk head holes (225), and a plurality of countersunk head nails (215) are provided with sliding sleeves (216).

6. The telescopic pressing mechanism for a two-color mold according to claim 1, characterized in that:

an oblique angle surface (441) is arranged at an opening of the main sliding groove (44), and an oblique angle surface (241) matched with the oblique angle surface (441) for use is arranged on the main sliding strip (24).

7. The telescopic pressing mechanism for a two-color mold according to claim 1, characterized in that:

the pressing block (4) is also provided with a slave slide bar (42) and a positioning groove (43) on a slave slide surface (46) close to the base (3), and the positioning groove (43) is arranged in the middle of the slave slide bar (42) to divide the slave slide bar (42) into a plurality of sections; the base (3) is close to still be provided with on seat top surface (38) of compact heap (4) from spout (32) and spacing hole (36), be provided with spacing pin (33) in spacing hole (36), spacing pin (33) be located from the middle part of spout (32) with constant head tank (43) cooperation is used.

8. The telescopic pressing mechanism for a two-color mold according to claim 7, characterized in that:

an included angle is formed between the seat top surface (38) and the seat bottom surface (37) of the base (3)

An included angle omega is formed between the auxiliary sliding surface (46) and a main sliding surface (47) at the tail part of the pressing block (4).

9. The telescopic pressing mechanism for a two-color mold according to claim 8, characterized in that:

the included angle omega and the included angle

All are acute angle structures, and the value of the included angle omega is 60-85 degrees.

10. The telescopic pressing mechanism for a two-color mold according to claim 7, characterized in that:

the tail part of the base (3) is also provided with a sunken clearance groove (34) close to the action block (2).