CN214926659U

CN214926659U - Mold closing device for injection molding machine

Info

Publication number: CN214926659U
Application number: CN202121539639.9U
Authority: CN
Inventors: 张见华
Original assignee: Wuxi Ke'er Electronic Technology Co ltd
Current assignee: Wuxi Ke'er Electronic Technology Co ltd
Priority date: 2021-07-07
Filing date: 2021-07-07
Publication date: 2021-11-30
Anticipated expiration: 2031-07-07

Abstract

The utility model discloses a mold closing device for an injection molding machine, which comprises a base, supporting rods and a top plate, wherein the top end of the base is fixedly connected with the top plate through a plurality of supporting rods; the bottom end of the top plate is fixedly connected with an air cylinder, the bottom end of the air cylinder is fixedly connected with a movable mold, and the top end of the base is fixedly connected with a fixed mold matched with the movable mold; the fixed die is characterized in that a fixed plate is fixedly connected to the top end of the movable die, a plurality of elastic positioning pieces are arranged on the fixed plate, and a plurality of positioning blocks matched with the elastic positioning pieces are fixedly connected to the side wall of the fixed die. The utility model discloses a set up spring positioning element and locating piece and can realize at the in-process of compound die, spring positioning element will realize the effect of buffering through the effect of inside spring, and then realize that movable mould and cover half carry out the in-process of compound die, and the mutual collision effort between movable mould and the cover half is less, avoids the movable mould that the too big movable mould that leads to of effort and cover half condition such as damaging easily to take place between movable mould and the cover half.

Description

Mold closing device for injection molding machine

Technical Field

The utility model belongs to the technical field of the injection molding machine, especially, relate to a MOLD CLAMPING APPARATUS for injection molding machine.

Background

An injection molding machine, also known as an injection molding machine or an injection molding machine, heats plastic, applies high pressure to molten plastic, and injects the molten plastic to fill a mold cavity, so that the molten plastic is cooled and shaped in the mold cavity, and plastic products in various shapes are manufactured.

Through retrieval, chinese patent No. CN213082247U discloses a mold closing device of an injection molding machine, which comprises a base, wherein an injection molding gun body is arranged on the upper surface of the base, an injection mold box is fixedly connected to the upper surface of the base, and a sliding rail door is arranged on the front surface of the injection mold box. This patent is through setting up fixed plate, ejector pin, push pedal and stripper bar, is convenient for ejecting injection moulding product of moulding plastics moving die internal forming to reach the effect of automatic drawing of patterns.

However, in the process of closing the mold, the fixed mold is in direct contact with the movable mold, so that the fixed mold and the movable mold are easily damaged, the service life of the fixed mold is greatly shortened, and the problem that the fixed mold and the movable mold cannot be completely matched due to certain offset between the movable mold and the fixed mold is easily caused in the process of closing the mold.

Therefore, we propose a mold clamping device for an injection molding machine to solve the above problems.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the invention provides a mold closing device for an injection molding machine, which is provided with a spring positioning piece and a positioning block, wherein the spring positioning piece can realize the buffering effect through the effect of an internal spring in the mold closing process, so that the mutual collision acting force between a movable mold and a fixed mold is small in the mold closing process of the movable mold and the fixed mold, and the movable mold and the fixed mold are prevented from being easily damaged due to the overlarge acting force between the movable mold and the fixed mold.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a mold closing device for an injection molding machine comprises a base, supporting rods and a top plate, wherein the top end of the base is fixedly connected with the top plate through the supporting rods;

the bottom end of the top plate is fixedly connected with an air cylinder, the bottom end of the air cylinder is fixedly connected with a movable mold, and the top end of the base is fixedly connected with a fixed mold matched with the movable mold;

the fixed die is characterized in that a fixed plate is fixedly connected to the top end of the movable die, a plurality of elastic positioning pieces are arranged on the fixed plate, and a plurality of positioning blocks matched with the elastic positioning pieces are fixedly connected to the side wall of the fixed die.

Furthermore, elastic positioning element comprises spring, locating lever and fixed block, the locating lever run through the fixed plate and with fixed plate sliding connection, the fixed block is located the fixed plate top and with locating lever fixed connection, both ends respectively with fixed block bottom and fixed plate top fixed connection about the spring.

Furthermore, the top end of the fixed block is fixedly connected with the positioning rod through a nut, and the nut is in threaded connection with the side of the positioning rod ring.

Furthermore, the central axis of the positioning rod is vertically arranged, and the bottom end of the positioning rod is of a conical structure.

Furthermore, a positioning groove in sliding connection with the positioning rod is formed in the positioning block, the positioning groove is composed of a conical groove and a cylindrical groove, and the cylindrical groove is communicated with the bottom end of the conical groove.

Furthermore, the taper groove is a structure with a wide upper part and a narrow lower part, and the central axes of the taper groove and the cylindrical groove are coincided with the central axis of the positioning rod.

Furthermore, a plurality of supporting blocks are fixedly connected to the movable die, and reinforcing grooves connected with the positioning rods in a sliding mode are formed in the supporting blocks.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the spring positioning piece and the positioning block are arranged, so that the buffering effect of the spring positioning piece can be realized under the action of an internal spring in the die assembly process, the mutual collision acting force between the movable die and the fixed die is small in the die assembly process of the movable die and the fixed die, and the movable die and the fixed die are prevented from being easily damaged due to the overlarge acting force between the movable die and the fixed die;

2. the supporting block can realize the supporting and reinforcing effect on the side edge of the positioning rod, so that the situation that the positioning rod is easy to deform, the final positioning is inaccurate and the like is avoided;

3. through setting up locating lever bottom and tapering structure and bell jar can realize, after the locating lever entered into the bell jar inside, even if there is certain deviation between movable mould and the cover half, the locating lever of this moment will remove along the bell jar inner wall for to the correction of deviation, and then ensure to counterpoint between movable mould and the cover half accurate.

Drawings

Fig. 1 is a schematic perspective view of a mold clamping device for an injection molding machine according to the present invention;

FIG. 2 is a schematic diagram of the exploded structure of FIG. 1;

fig. 3 is a schematic cross-sectional structural view of a positioning block in a mold clamping device for an injection molding machine according to the present invention;

fig. 4 is a schematic structural diagram of a support block in a mold closing device for an injection molding machine according to the present invention;

fig. 5 is a schematic structural diagram of an elastic positioning element in a mold closing device for an injection molding machine.

In the figure: 1. a base; 2. a support bar; 3. a top plate; 4. a cylinder; 5. moving the mold; 51. a support block; 52. a reinforcing groove; 6. fixing a mold; 7. a fixing plate; 8. an elastic positioning member; 81. a spring; 82. positioning a rod; 83. a fixed block; 84. a nut; 9. positioning blocks; 91. a tapered groove; 92. a cylindrical groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-5, a mold closing device for an injection molding machine comprises a base 1, support rods 2 and a top plate 3, wherein the top end of the base 1 is fixedly connected with the top plate 3 through the plurality of support rods 2.

The bottom end of the top plate 3 is fixedly connected with a cylinder 4, the model of the cylinder 4 is SC60 x 100, the bottom end of the cylinder 4 is fixedly connected with a movable mold 5, the top end of the base 1 is fixedly connected with a fixed mold 6 matched with the movable mold 5, injection molding is realized through the movable mold 5 and the fixed mold 6, and the cylinder 4 drives the movable mold 5 to realize mold closing between the movable mold 5 and the fixed mold 6.

Fixed plate 7 is fixedly connected with on movable mould 5 top, is equipped with a plurality of elastic positioning elements 8 on fixed plate 7, and elastic positioning element 8 comprises spring 81, locating lever 82 and fixed block 83, and locating lever 82 runs through fixed plate 7 and with fixed plate 7 sliding connection, and fixed block 83 is located fixed plate 7 top and with locating lever 82 fixed connection, spring 81 upper and lower both ends respectively with fixed block 83 bottom and fixed plate 7 top fixed connection.

The central axis of the positioning rod 82 is vertically arranged, the bottom end of the positioning rod 82 is of a conical structure, a plurality of positioning blocks 9 matched with the elastic positioning piece 8 are fixedly connected to the side wall of the fixed die 6, positioning grooves which are connected with the positioning rod 82 in a sliding mode are formed in the positioning blocks 9, each positioning groove comprises a conical groove 91 and a cylindrical groove 92, and the cylindrical groove 92 is communicated with the bottom end of the conical groove 91.

The taper groove 91 is narrow structure under wide, and taper groove 91 and cylinder groove 92 the central axis all with locating lever 82 the central axis coincidence setting, at the in-process of compound die, inside locating lever 82 bottom will enter into taper groove 91 at first, if there is certain deviation in the position between movable mould 5 and the cover half 6, along with the slip between locating lever 82 and the taper groove 91 lateral wall, locating lever 82 will drive movable mould 5 to take place slight deflection and realize can be fine between movable mould 5 and the cover half 6 matching, and the condition of positional deviation can not appear.

Fixedly connected with a plurality of supporting shoes 51 on the movable mould 5, set up on the supporting shoe 51 with locating lever 82 sliding connection's strengthening groove 52, realize the enhancement of locating lever 82 side through supporting shoe 51, avoid locating lever 82 to appear the condition such as deformation.

The top end of the fixing block 83 is fixedly connected with the positioning rod 82 through a nut 84, the nut 84 is in threaded connection with the ring side of the positioning rod 82, the elastic force of the spring 81 can be changed by changing the position of the nut 84, and then the elastic force of the spring 81 can be adjusted as required.

Now, the operation principle of the present invention is described as follows:

when the die is assembled, the air cylinder 4 drives the movable die 5 to move downwards until the movable die 5 and the fixed die 6 are assembled, the bottom end of the positioning rod 82 firstly enters the tapered groove 91 in the process, if a certain deviation exists between the movable die 5 and the fixed die 6, the positioning rod 82 drives the movable die 5 to slightly deflect along with the sliding between the positioning rod 82 and the side wall of the tapered groove 91 so as to realize the good matching between the movable die 5 and the fixed die 6, without the occurrence of positional deviation, and if the bottom end of the positioning rod 82 is in contact with the cylindrical groove 92, the positioning rod 82 stops moving, the movable mold 5 and the fixed mold 7 continue moving downward, the spring 81 deforms, and then the buffer effect is realized, the small mutual collision acting force between the movable mold 5 and the fixed mold 6 is ensured, and the situation that the movable mold 5 and the fixed mold 6 are easy to damage and the like caused by the overlarge acting force between the movable mold 5 and the fixed mold 6 is avoided.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A mold closing device for an injection molding machine comprises a base (1), supporting rods (2) and a top plate (3), and is characterized in that the top end of the base (1) is fixedly connected with the top plate (3) through the supporting rods (2);

the bottom end of the top plate (3) is fixedly connected with an air cylinder (4), the bottom end of the air cylinder (4) is fixedly connected with a movable mold (5), and the top end of the base (1) is fixedly connected with a fixed mold (6) matched with the movable mold (5);

the fixed die is characterized in that a fixed plate (7) is fixedly connected to the top end of the movable die (5), a plurality of elastic positioning pieces (8) are arranged on the fixed plate (7), and a plurality of positioning blocks (9) matched with the elastic positioning pieces (8) are fixedly connected to the side wall of the fixed die (6).

2. The mold closing device for the injection molding machine according to claim 1, wherein the elastic positioning element (8) is composed of a spring (81), a positioning rod (82) and a fixing block (83), the positioning rod (82) penetrates through the fixing plate (7) and is slidably connected with the fixing plate (7), the fixing block (83) is located at the top end of the fixing plate (7) and is fixedly connected with the positioning rod (82), and the upper end and the lower end of the spring (81) are fixedly connected with the bottom end of the fixing block (83) and the top end of the fixing plate (7) respectively.

3. The mold clamping device for the injection molding machine as claimed in claim 2, wherein the top end of the fixed block (83) is fixedly connected to the positioning rod (82) by a nut (84), and the nut (84) is screwed to the ring side of the positioning rod (82).

4. The mold clamping device for the injection molding machine as claimed in claim 2, wherein the central axis of the positioning rod (82) is vertically arranged, and the bottom end of the positioning rod (82) is of a conical structure.

5. The mold clamping device for the injection molding machine as claimed in claim 2, wherein a positioning groove slidably connected with the positioning rod (82) is formed in the positioning block (9), the positioning groove is composed of a conical groove (91) and a cylindrical groove (92), and the cylindrical groove (92) is communicated with the bottom end of the conical groove (91).

6. The mold clamping device for the injection molding machine as claimed in claim 5, wherein the tapered groove (91) has a structure that is wide at the top and narrow at the bottom, and the central axes of the tapered groove (91) and the cylindrical groove (92) are both coincident with the central axis of the positioning rod (82).

7. The mold clamping device for the injection molding machine as claimed in claim 2, wherein a plurality of supporting blocks (51) are fixedly connected to the movable mold (5), and the supporting blocks (51) are provided with reinforcing grooves (52) slidably connected with the positioning rods (82).