阅读说明：本技术 一种锁模结构及具有其的交替转换双层模具 (Mode locking structure and have its double-deck mould of alternative conversion ) 是由 谭建志 叶志明 于 2021-07-13 设计创作，主要内容包括：本发明属于模具技术领域,更具体地,涉及一种锁模结构及具有其的交替转换双层模具,包括第一锁模杆、第二锁模杆以及可分别与第一锁模杆、第二锁模杆可拆卸连接的锁头,第一锁模杆与第二锁模杆平行设置,还包括用于带动锁头垂直于第一锁模杆的方向往复运动以使得锁头分别交替对第一锁模杆、第二锁模杆进行限位的驱动装置,驱动装置与锁头相连。本发明可以实现对锁头的单独控制,使得双层模具可以交替进行冷却与注塑工序,解决了注塑机溶胶量不足以注塑双层模具与厚壁产品冷却时间过长之间的矛盾,大大提高了厚壁产品的注塑效率。(The invention belongs to the technical field of molds, and particularly relates to a mold locking structure and an alternate conversion double-layer mold with the same. The invention can realize the independent control of the lock head, so that the double-layer mold can alternately carry out cooling and injection molding processes, the contradiction between insufficient sol amount of the injection molding machine and overlong cooling time of the double-layer mold and a thick-wall product is solved, and the injection molding efficiency of the thick-wall product is greatly improved.)

1. The utility model provides a mode locking structure, its characterized in that, including first mode locking pole (1), second mode locking pole (2) and can respectively with tapered end (3) of connection can be dismantled in first mode locking pole (1), second mode locking pole (2), first mode locking pole (1) and second mode locking pole (2) parallel arrangement still including being used for driving tapered end (3) perpendicular to the direction reciprocating motion of first mode locking pole (1) is so that tapered end (3) carry out spacing drive arrangement (4) to first mode locking pole (1), second mode locking pole (2) respectively in turn, drive arrangement (4) with tapered end (3) link to each other.

2. A mode-locking structure according to claim 1, characterized in that said lock head (3) comprises a base (31) and two position-limiting structures (32) fixedly arranged at two ends of said base (31), said two position-limiting structures (32) are alternatively engaged with said first mode-locking rod (1) and said second mode-locking rod (2), respectively, and said base (31) is connected with said driving device (4).

3. A mode-locking structure according to claim 2, characterized in that said base (31) is disposed between the ends of said first and second mold-locking rods (1, 2), and two of said position-limiting structures (32) are respectively fixedly disposed on the sides of said base (31) adjacent to said first and second mold-locking rods (1, 2).

4. A mode locking structure according to claim 3, wherein the two limiting structures (32) are respectively provided with a clamping groove (321) near the side of the first mode locking rod (1) and the second mode locking rod (2), and the first mode locking rod (1) and the second mode locking rod (2) are respectively provided with a clamping block (5) clamped with the clamping groove (321).

5. A mode locking structure according to claim 3, characterized in that two of said limiting structures (32) are respectively provided with a limiting hole (322) near the side of said first mode locking rod (1) and said second mode locking rod (2), and each of said first mode locking rod (1) and said second mode locking rod (2) is provided with a limiting post (6) inserted into said limiting hole (322).

6. A mould locking structure according to any one of claims 2 to 5, characterized in that the driving means (4) is an oil cylinder or an air cylinder, the telescopic arm of which is connected to the base (31), and the axis of the telescopic arm of which is perpendicular to the axis of the first locking pin (1).

7. A lock mould structure according to any one of claims 2 to 5, characterized in that said drive means (4) comprises a drive motor (41), a gear (42) fixedly connected to the output shaft of said drive motor (41) and a rack (43) engaged with said gear (42), said rack (43) being fixedly connected to said base (31) and arranged in the direction of movement of said lock cylinder (3).

8. An alternate conversion double-layer die comprises a fixed die (101), a first movable die (102) and a second movable die (103) which are respectively and movably arranged on two opposite sides of the fixed die (101), wherein a first cavity and a second cavity are respectively arranged between the first movable die (102) and the fixed die (101), and between the second movable die (103) and the fixed die (101); characterized by further comprising a mold clamping structure (100) according to any one of claims 1 to 7, wherein the driving device (4) is mounted on the fixed mold (101), the first movable mold (102) is fixedly connected with the first mold clamping rod (1), and the second movable mold (103) is fixedly connected with the second mold clamping rod (2).

9. An alternate conversion double layer mold according to claim 8, further comprising a controller (106) electrically connected to said driving means (4).

10. The alternate conversion double-layer mold according to claim 8 or 9, further comprising two stroke switches (107) electrically connected with the injection molding machine, wherein the stroke switches (107) are fixedly arranged on the fixed mold (101), and the lock head (3) reciprocates between the two stroke switches (107).

Technical Field

The invention belongs to the technical field of molds, and particularly relates to a mold locking structure and an alternate conversion double-layer mold with the same.

Background

The wall thickness of a PPR pipe fitting product is generally thicker, and the traditional injection molding production needs to consume longer cooling time, so that the production efficiency is lower; at present, some injection products use double-layer molds, but the products produced by the injection products are mainly large-size thin-wall flat products or large-batch small products, the two parting surfaces of the products are opened at the same time, but for the products with thicker wall thickness such as PPR (polypropylene random) pipe fittings, the sol amount of an injection molding machine can only complete the injection molding of one layer of mold at one time, so the scheme of opening the molds at the same time is not suitable for the production of the PPR pipe fittings. In addition, although there is also a technical scheme of asynchronous mold opening, for example, chinese patent CN112092318A discloses a laminated mold with asynchronous mold opening, which drives the mold opening of another parting surface through the mold opening of one parting surface, and can achieve non-simultaneous mold opening, however, because the time interval between the first mold opening and the second mold opening is determined by the length of the driving rod, if the mold opening cooling time may be longer for a product with thick wall thickness, the length of the driving rod needs to be longer, so the scheme cannot control the mold opening time, and the application range is smaller.

Disclosure of Invention

The invention aims to overcome at least one defect in the prior art, and provides a mold locking structure and an alternate conversion double-layer mold with the same, which can realize asynchronous mold opening with controllable time, so that the injection, pressure maintaining and cooling setting of products are alternately carried out, and the production efficiency of thick-wall products is greatly improved.

In order to solve the technical problems, the invention adopts the technical scheme that:

the utility model provides a mode locking structure, including first mode locking pole, second mode locking pole and can dismantle the tapered end of being connected with first mode locking pole, second mode locking pole respectively, first mode locking pole and second mode locking pole parallel arrangement still including the direction reciprocating motion that is used for driving the first mode locking pole of tapered end perpendicular to so that the tapered end carries out spacing drive arrangement in turn to first mode locking pole, second mode locking pole respectively, drive arrangement links to each other with the tapered end.

First mode locking pole and second mode locking pole in this scheme can respectively with two movable mould board fixed connection in the double-deck mould, drive the tapered end through drive arrangement and move to first settlement position or second settlement position, thereby make tapered end restriction first mode locking pole or second mode locking pole motion, can be in order to carry out the mode locking control to two movable mould boards respectively, the die sinking interval of two die cavity faces of double-deck mould can be for the random time like this, and then the production of moulding plastics of adaptation thick wall product, the adaptability of mode locking structure has been increased, make the product mould plastics and cool off can go on in turn simultaneously, improve the efficiency of moulding plastics of thick wall product.

As a further improved structure, the lock head comprises a base and two limiting structures which are fixedly arranged at two ends of the base respectively, the two limiting structures can be clamped with the first mold locking rod or the second mold locking rod respectively, and the base is connected with the driving device.

As a further improved structural form, the base is arranged between the end portions of the first mold locking rod and the second mold locking rod, and the two limiting structures are respectively and fixedly arranged on the side surfaces of the base, which are close to the first mold locking rod and the second mold locking rod.

As a further improved structural form, the two limiting structures are respectively provided with a clamping groove close to the side faces of the first clamping rod and the second clamping rod, and clamping blocks clamped with the clamping grooves are arranged on the first clamping rod and the second clamping rod. Or the side surfaces of the two limiting structures, which are close to the first mold locking rod or the second mold locking rod respectively, are provided with limiting holes, and the first mold locking rod and the second mold locking rod are provided with limiting columns which are connected with the limiting holes in an inserting mode.

As a further improved structure form, the driving device is an oil cylinder or an air cylinder, a telescopic arm of the oil cylinder or the air cylinder is connected with the base, and the axis of the telescopic arm of the oil cylinder or the air cylinder is perpendicular to the axis of the first mold locking rod. Or the driving device comprises a driving motor, a gear fixedly connected with an output shaft of the driving motor and a rack meshed with the gear, and the rack is fixedly connected with the base and arranged along the movement direction of the lock head.

The scheme also provides an alternate conversion double-layer die which comprises a fixed die, a first movable die and a second movable die, wherein the first movable die and the second movable die are respectively and movably arranged on two opposite sides of the fixed die; still include foretell mode locking structure, drive arrangement installs on the cover half, first movable mould and first mode locking pole fixed connection, second movable mould and second mode locking pole fixed connection.

As a further improved structure form, the injection molding machine further comprises a controller electrically connected with the injection molding machine and the driving device.

As a further improved structure, the injection molding machine further comprises two travel switches electrically connected with the injection molding machine, the travel switches are fixedly arranged on the fixed die, and the lock head moves back and forth between the two travel switches.

Compared with the prior art, the beneficial effects are:

can realize the independent control to two moving die plates in double-deck mould through a mode locking structure in this scheme, lock two moving die plates in turn respectively, its structure is comparatively simple, can accomplish the production processes inconsistent in two die cavities like this in addition, make first die cavity be in when the pressurize of moulding plastics, the tapered end carries on spacingly to second mode locking pole, second die cavity is in the cooling shaping stage, after the cooling is accomplished, the tapered end breaks away from second mode locking pole and carries on spacingly to first mode locking pole, can be to second die cavity die sinking, the die sinking of closing again carries out the new round of pressurize of moulding plastics to the second die cavity, can carry out the die sinking to first die cavity this moment, with this circulation, the fashioned latency of cooling that can significantly reduce, the efficiency of moulding plastics is improved.

Drawings

FIG. 1 is a schematic view showing the entire structure of a mode-locking structure according to example 1 of the present invention;

FIG. 2 is a schematic view of a lock head structure of a mode locking structure according to embodiment 1 of the present invention;

FIG. 3 is a schematic view of a lock head structure of a mode locking structure according to embodiment 2 of the present invention;

FIG. 4 is a schematic view showing the structure of a first mold clamping bar of the mold clamping structure according to example 2 of the present invention;

FIG. 5 is a schematic view showing the entire structure of a mode-locking structure according to example 3 of the present invention;

FIG. 6 is a schematic view showing the overall structure of an alternate double-layer mold according to example 4 of the present invention;

FIG. 7 is an enlarged schematic view of portion A of FIG. 6;

FIG. 8 is a schematic diagram of an electrical connection block of an alternate conversion double layer mold according to example 4 of the present invention.

The device comprises a first mold locking rod 1, a second mold locking rod 2, a lock head 3, a base 31, a limiting structure 32, a clamping groove 321, a limiting hole 322, a driving device 4, a driving motor 41, a gear 42, a rack 43, a clamping block 5, a limiting column 6, a mold locking structure 100, a fixed mold 101, a first movable mold 102, a second movable mold 103, a controller 106 and a travel switch 107.

Detailed Description

The drawings are for illustration purposes only and are not to be construed as limiting the invention; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the invention.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms may be understood by those skilled in the art according to specific circumstances.

Example 1:

as shown in fig. 1 to 2, a first embodiment of a mold locking structure includes a first mold locking rod 1, a second mold locking rod 2, and a locking head 3 detachably connected to the first mold locking rod 1 and the second mold locking rod 2, where the first mold locking rod 1 and the second mold locking rod 2 are arranged in a collinear manner, and the first embodiment further includes a driving device 4 for driving the locking head 3 to reciprocate perpendicular to the first mold locking rod 1, so that the locking head 3 performs alternate limiting on the first mold locking rod 1 and the second mold locking rod 2, respectively, and the driving device 4 is connected to the locking head 3.

For convenience of explanation, the mold locking structure is applied to a double-layer mold, but it is also applicable to other laminated molds, which are not illustrated here.

In order to simplify the structure of the mold to the maximum extent, reduce the manufacturing cost of the mold and reduce the mechanical failure rate at the same time, the lock head 3 in this embodiment includes a base 31 and two limit structures 32 respectively fixedly disposed at two ends of the base 31, the two limit structures 32 are respectively located at two ends of the base, the two limit structures 32 can be respectively clamped with the first mold locking rod 1 or the second mold locking rod 2, and the base 31 is connected with the driving device 4. Specifically, the base 31 is fixedly connected with the driving device 4, so that the base 31 is driven to reciprocate by only one driving device 4, when the base 31 moves to a first limit position, namely, the right side in fig. 1, one limiting structure 32 is clamped with the first mold locking rod 1, the other limiting structure 32 is separated from the second mold locking rod 2, at this time, the axial movement of the first mold locking rod 1 is limited, when the base 31 moves to a second limit position, namely, the left side in fig. 1, one limiting structure 32 is clamped with the second mold locking rod 2, the other limiting structure 32 is separated from the first mold locking rod 1, the alternating clamping of the limiting structure 32 with the first mold locking rod 1 and the second mold locking rod 2 is realized, namely, the alternating movement of the first mold locking rod 1 and the second mold locking rod 2 is realized, the double-layer mold can be opened alternately, and the mold opening interval time is not limited.

The base 31 in this embodiment is disposed between the end portions of the first mold locking rod 1 and the second mold locking rod 2, and the length of the base 31 in the direction perpendicular to the first mold locking rod 1 should be greater than the thickness of the first mold locking rod 1 and the second mold locking rod 2, so that two ends of the base 31 extend out of the side walls of the first mold locking rod 1 and the second mold locking rod 2; two limit structures 32 are respectively fixed and arranged on the side surfaces of the base 31 close to the first mold locking rod 1 and the second mold locking rod 2, that is, the base 31 and the two limit structures 32 form a Z-shaped structure. Specifically, the two limiting structures 32 are respectively provided with a clamping groove 321 near the side surfaces of the first mold locking rod 1 and the second mold locking rod 2, the first mold locking rod 1 and the second mold locking rod 2 are both provided with a clamping block 5 clamped with the clamping groove 321, and the distance between the bottom surfaces of the two clamping grooves 321 in the movement direction of the lock head 3 is greater than the thickness of the first mold locking rod 1 or the second mold locking rod 2 plus the two clamping blocks 5; like this two draw-in grooves 321 can not carry out the joint with fixture block 5 simultaneously, drive base 31 along the direction motion of the first mode locking pole of perpendicular to through drive arrangement 4, when its movement to the extreme position on the right, fixture block 5 and draw-in groove 321 joint on the left, fixture block 5 and draw-in groove 321 on the right break away from, the lock head 3 carries out spacing locking to first mode locking pole 1 promptly, restrict the axial motion of first mode locking pole 1, and second mode locking pole 2 can be opened at any time, otherwise, then can carry out spacing locking to second mode locking pole 2, first mode locking pole 1 can be opened at any time. Such setting makes mode locking structure overall structure compacter, and the action route is the shortest, and the spare part that uses is minimum to reduce structure fault probability, reduce the mould material cost in earlier stage, improve production efficiency simultaneously.

The driving device 4 in this embodiment is an oil cylinder, a cylinder barrel of the oil cylinder can be fixed on the mold, a telescopic arm of the oil cylinder is connected with the base 31, and an axial lead of the telescopic arm of the oil cylinder is perpendicular to an axial lead of the first mold locking rod 1. Specifically, telescopic boom can be connected with base 31 fixed connection or can dismantle through corresponding joint structure for base 31 can follow telescopic boom's flexible and move, and such structure is comparatively simple. It is of course within the scope of the present solution to use other driving means 4, such as a pneumatic cylinder, to achieve the same function, which are not further listed here.

This embodiment drives the direction motion of the first mold locking rod 1 of edge perpendicular to of tapered end 3 through the hydro-cylinder, make fixture block 5 on the first mold locking rod 1 and the draw-in groove 321 joint on the tapered end 3 or fixture block 5 on the second mold locking rod 2 and the draw-in groove 321 joint on the tapered end 3, thereby realize the independent control to tapered end 3, make the movable mould board of being connected with first mold locking rod 1 or second mold locking rod 2 can the die sinking in turn, make the operation in two cavities of double-deck mould can be asynchronous, perfectly solved the injection molding machine and glued volume and be not enough double-deck mould of moulding plastics and the contradiction of thick wall product cooling time overlength, the efficiency of moulding plastics of thick wall product has been improved greatly.

Example 2:

as shown in fig. 3 to 4, this embodiment is a second embodiment of a mold locking structure, and the only difference between this embodiment and the first embodiment is that two limiting structures 32 in this embodiment are respectively provided with a limiting hole 322 near the side of the first mold locking rod 1 or the second mold locking rod 2, the first mold locking rod 1 and the second mold locking rod 2 are both provided with a limiting post 6 inserted into the limiting hole 322, and the distance between the bottom surfaces of the two limiting holes 322 in the moving direction of the lock head 3 is greater than the thickness of the first mold locking rod 1 or the second mold locking rod 2 plus the length of the two limiting posts 6, so that when one of the limiting holes 322 is inserted into the limiting post 6, the other limiting post 6 is separated from the other limiting hole 322, so that when the lock head 3 limits one of the mold locking rods, the other mold locking rod can move. Through the cooperation of spacing post 6 and spacing hole 322, increase tapered end 3 to the spacing direction of first mold clamping rod 1 or second mold clamping rod 2, except that along the axial of first mold clamping rod 1 spacing promptly, still can restrict first mold clamping rod 1 or second mold clamping rod 2 and rotate around its one end, can strengthen the locking effect of tapered end 3.

Example 3

As shown in fig. 5, a third embodiment of a mold clamping structure is provided, and the present embodiment is different from the first or second embodiment only in that the driving device 4 of the present embodiment includes a driving motor 41, a gear 42 fixedly connected to an output shaft of the driving motor 41, and a rack 43 engaged with the gear 42, and the rack 43 is fixedly connected to the base 31 and disposed along a moving direction of the lock cylinder 3. The corresponding linearity of the drive motor 41 facilitates control of the stroke of movement of the lock cylinder 3.

Example 4:

as shown in fig. 6 to 8, an embodiment of an alternate switching double-layer mold includes a fixed mold 101, and a first movable mold 102 and a second movable mold 103 movably disposed on opposite sides of the fixed mold 101, respectively, and a first cavity and a second cavity are disposed between the first movable mold 102 and the fixed mold 101, and between the second movable mold 103 and the fixed mold 101, respectively; the mold locking structure 100 of any one of the first embodiment, the second embodiment and the third embodiment is further included, the driving device 4 is mounted on the fixed mold 101, the first movable mold 102 is fixedly connected with the first mold locking rod 1, and the second movable mold 103 is fixedly connected with the second mold locking rod 2. It should be noted that, of course, the structure of the mold, such as a cylinder or a jack rod, for driving the first movable mold 102 or the second movable mold 103 to move, is also included, which is well known to those skilled in the art and will not be described in detail herein.

It should be noted that, in the present embodiment, the number of the mold locking structures 100 is not limited, and the number of the mold locking structures 100 may be increased or decreased according to specific situations, so as to adapt to the mold locking force required by the corresponding mold.

In order to avoid the situation that the mold locking structure 100 starts to work before moving to the injection molding machine, the embodiment further includes a controller 106 electrically connected to the driving device 4, and the controller 106 is also electrically connected to the injection molding machine and the cylinder for driving the first movable mold 102 or the second movable mold 103 to move, so that the controller 106 can control the movement stroke of the driving device 4, and after the set stroke is reached, the injection molding machine is started to perform injection molding. It should be noted that the mold clamping structure 100 may further include two travel switches 107 electrically connected to the injection molding machine, the travel switches 107 are fixedly disposed on the fixed mold 101, and the lock head 3 reciprocates between the two travel switches 107, so that the same function can be achieved by the travel switches 107.

The working process of the embodiment is as follows:

firstly, the injection molding machine successively performs injection molding on a first cavity and a second cavity, at the moment, the initial position of a lock head 3 is a second limit position, the second mold locking rod 2 is limited, after cooling and shaping are completed, a second movable mold 103 is opened through an oil cylinder to open the mold, the product in the second cavity is ejected, then the mold is closed, injection molding is performed on the second cavity, after injection molding is completed, a driving device 4 drives the lock head 3 to move to the first limit position, the first mold locking rod 1 is limited, a first movable mold 102 is opened to open the mold, the product in the first cavity is ejected, then the mold is closed, injection molding is performed on the first cavity, the lock head 3 of the driving device 4 moves to the second limit position, and next cycle is started.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.