CN220841244U

CN220841244U - Injection mold with high safety coefficient

Info

Publication number: CN220841244U
Application number: CN202322629472.0U
Authority: CN
Inventors: 张建华; 刘永宁; 蒋光武
Original assignee: Shanghai Surini Precision Mould Co ltd
Current assignee: Shanghai Surini Precision Mould Co ltd
Priority date: 2023-09-27
Filing date: 2023-09-27
Publication date: 2024-04-26
Anticipated expiration: 2033-09-27

Abstract

The application discloses an injection mold with high safety coefficient, which relates to the field of injection molds and comprises a movable mold and a fixed mold, wherein a first plug-in block corresponding to a first connecting hole of a product and a second plug-in block corresponding to a second connecting hole of the product are arranged on the movable mold, a first ejection mechanism for driving the first plug-in block and the second plug-in block to eject synchronously is arranged on the movable mold, a third plug-in block corresponding to a third connecting hole of the product is arranged on the fixed mold, and a second ejection mechanism for driving the third plug-in block to eject is arranged on the fixed mold. The application is beneficial to improving the safety coefficient of the injection mold and preventing the product from being damaged.

Description

Injection mold with high safety coefficient

Technical Field

The application relates to the field of injection molds, in particular to an injection mold with a high safety coefficient.

Background

Injection molding, also known as injection molding, is a method of injection and molding. The injection molding method has the advantages of high production speed and high efficiency, and can realize automation of operation.

There is a product, as shown in fig. 1, including a body 60, in which a first connection hole 70 and a second connection hole 80 are formed at one end of the body 60, and a third connection hole 90 having an inclined shape is formed at the other end of the body 60.

Corresponding to the injection mold of the product, the insertion block corresponding to the first connecting hole, the second connecting hole and the third connecting hole can be installed on the mold, a cavity is formed between the insertion block and the mold body, and the hole-shaped characteristic can be formed during injection molding. During demolding, the plugging block needs to be removed, and then the product can be ejected out to realize demolding. In practice, the product is molded on the movable mold, and the plug blocks corresponding to the first connecting hole and the second connecting hole are positioned on the movable mold, but the plug blocks corresponding to the third connecting hole are positioned on the fixed mold, so that before the movable mold and the fixed mold are separated, the plug blocks corresponding to the third connecting hole perform the release action first, and the release action of the movable mold and the fixed mold can be performed.

In the actual demolding process, the failure of the release mechanism exists, the situation that the plugging block is not released corresponding to the third connecting hole, and at the moment, the movable mold and the fixed mold still can be released, so that the product is damaged, namely the safety coefficient of the existing injection mold for the product is still to be improved.

Disclosure of utility model

In order to improve the safety coefficient of the injection mold, the application provides the injection mold with high safety coefficient.

The injection mold with high safety coefficient provided by the application adopts the following technical scheme:

The injection mold with the high safety coefficient comprises a movable mold and a fixed mold, wherein a first plug-in block corresponding to a first connecting hole of a product and a second plug-in block corresponding to a second connecting hole of the product are arranged on the movable mold, a first ejection mechanism for driving the first plug-in block and the second plug-in block to eject synchronously is arranged on the movable mold, a third plug-in block corresponding to a third connecting hole of the product is arranged on the fixed mold, and a second ejection mechanism for driving the third plug-in block to eject is arranged on the fixed mold;

The second release mechanism comprises a sliding block and a driving piece for driving the sliding block to slide, the sliding block is connected with the third plug-in block, a safety needle is arranged on the movable mould, the length direction of the safety needle is consistent with the demoulding direction of the movable mould, the sliding direction of the sliding block is perpendicular to the length direction of the safety needle, a hooking block is arranged on the sliding block, a hooking part hooked with the hooking block is formed on the safety needle, and an avoidance port for avoiding the hooking part is also formed on the hooking block; when the sliding block slides and the third plug-in block is separated from the third connecting hole, the hooking part is positioned at the avoidance port.

By adopting the technical scheme, during mold closing, injection molding is performed to a cavity, a product is molded, during mold releasing, a driving piece is used for driving a sliding block to slide, so that a third plug-in block is separated from a third connecting hole, and meanwhile, during the sliding process of the sliding block, an avoidance groove on the sliding block gradually moves to a hooking part of a safety needle, namely, the hooking part is separated from the hooking block at the moment; and then the movable mould is separated from the fixed mould, the first inserting block and the second inserting block are separated by utilizing the first separating mechanism, and finally the separating operation of the product can be carried out. When the second release structure fails and does not operate, the safety needle is utilized to be hooked with the hooking block, the movable die cannot be separated from the fixed die, products are protected, the products are prevented from being damaged, and the safety coefficient of the injection mold is higher.

Preferably, a T-shaped groove is formed in the sliding block, a T-shaped block is formed at one end, far away from the third connecting hole, of the third plug-in block, the length direction of the T-shaped groove is perpendicular to the length direction of the T-shaped block, and the sliding direction of the sliding block is arranged at an included angle with the length direction of the T-shaped groove.

By adopting the technical scheme, the sliding block slides, and under the cooperation of the T-shaped groove and the T-shaped block, the sliding motion of the third plug-in block is realized, namely the release motion of the third plug-in block from the third connecting hole is realized.

Preferably, the sliding block is provided with a connecting block, the driving piece is provided with a first oil cylinder, and the end part of a piston rod of the first oil cylinder is connected with the connecting block.

Through adopting above-mentioned technical scheme, the first hydro-cylinder of operation drives the connecting block and slides, because connecting block is connected with the sliding block, consequently realizes the sliding motion of sliding block.

Preferably, a sliding gap is formed on the sliding block, the connecting block slides in the sliding gap, the sliding direction of the connecting block is parallel to the sliding direction of the sliding block, limiting surfaces are formed at two ends of the sliding block, which are positioned in the sliding gap, and the sliding block is driven to synchronously slide when the connecting block slides to be abutted against the limiting surfaces; the fixed die is characterized in that a limiting block is fixed on the fixed die, a limiting groove is formed in the sliding block, the limiting block is in plug-in fit with the limiting groove, a sliding groove is further formed in the sliding block, the sliding groove is perpendicular to the limiting groove, a pushing part used for pushing the limiting block out of the limiting groove is arranged in the sliding block in the sliding groove in a sliding mode, the pushing part is connected with the connecting block, and a resetting part used for resetting the limiting block is further arranged on the fixed die.

By adopting the technical scheme, when the first oil cylinder drives the connecting block to move, the pushing piece ejects the limiting block out of the limiting groove, the connecting block is abutted with the limiting surface, and then the connecting block drives the sliding block to slide; in the resetting process, when the limiting groove of the sliding block moves to the lower side of the limiting block, the limiting block is inserted into the limiting groove under the action of the resetting piece to position the moving position of the sliding block, so that excessive movement of the sliding block is prevented, and the forming size of a product is influenced.

Preferably, the pushing piece is arranged as a pushing rod, an inserting groove which is inserted with the limiting block is formed in the pushing rod, and a conical pushing part is formed on one side of the pushing rod, which is located in the inserting groove.

Through adopting above-mentioned technical scheme, under the compound die state, stopper and spacing groove and jack-in groove grafting cooperation, when the connecting block slides, the conical pushing part is ejecting spacing groove with the stopper, releases the spacing between sliding block and the stopper, and the sliding block can slide along with the connecting block afterwards.

Preferably, the reset piece is set as reset spring, the fixed die is fixedly provided with a mounting block, the limiting block is inserted and slipped on the mounting block, one end of the reset spring is connected with the mounting block, the other end of the reset spring is connected with the limiting block, and the length direction of the reset spring is consistent with the moving direction of the limiting block.

By adopting the technical scheme, in the die closing state, the limiting block is spliced with the splicing groove to position the sliding block, when the ejector rod ejects the limiting block from the limiting groove, the positioning of the sliding block and the limiting block is released, and the reset spring is in a compressed state; when the sliding block resets, the limiting groove moves to the lower part of the limiting block, and the limiting block and the limiting groove can be inserted under the action of the reset spring.

Preferably, the mounting block is provided with a positioning groove, and the safety needle is spliced with the positioning groove.

By adopting the technical scheme, the safety needle is spliced with the positioning groove, and the safety needle is positioned.

Preferably, the first release mechanism comprises a linkage block and a second oil cylinder, the first plug-in block is integrally formed on the linkage block, the second plug-in block is fixedly connected with the linkage block, and the end part of a piston rod of the second oil cylinder is fixedly connected with the linkage block.

By adopting the technical scheme, the second oil cylinder is operated, so that the first plug-in block and the second plug-in block can be separated.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the safety needle is hooked with the sliding block, and when the driving piece fails and does not operate, the movable die and the fixed die cannot be separated at the moment, so that the safety coefficient of the injection molding grinding tool is ensured, and damage to products is prevented;

2. The sliding block is positioned by utilizing the plug-in fit of the limiting block and the limiting groove, so that excessive movement of the sliding block is prevented, and further, excessive movement of the third plug-in block is caused, and the molding of a product is influenced;

Drawings

FIG. 1 is a schematic diagram of the overall structure of a related art product;

FIG. 2 is a schematic diagram of the overall structure of an embodiment of the present application;

FIG. 3 is a schematic view of a part of the structure of an embodiment of the present application, mainly showing the structure of the first disengagement mechanism;

FIG. 4 is a schematic view of a portion of a structure of an embodiment of the present application, mainly showing the structure of a third plug block;

FIG. 5 is a schematic view of a portion of a structure of an embodiment of the present application; mainly embody the structure of the hooking part and the hooking block;

Fig. 6 is a schematic view of a part of the structure of an embodiment of the present application, which mainly shows the structure of the ejector pin.

Reference numerals: 1. a movable mold; 2. a fixed mold; 3. a first plug block; 4. a second plug block; 5. a first ejection mechanism; 51. a linkage block; 52. a second cylinder; 6. a third plug block; 61. a T-shaped block; 7. a second ejection mechanism; 71. a sliding block; 711. a sliding gap; 712. a connecting block; 713. a limiting surface; 714. a T-shaped groove; 72. a first cylinder; 8. a safety needle; 81. a hooking portion; 9. a hooking block; 91. an avoidance port; 10. a limit groove; 20. a mounting block; 201. a limiting block; 202. a positioning groove; 30. a slip groove; 40. pushing the push rod; 401. a plug-in groove; 402. a pushing part; 50. a return spring; 60. a body; 70. a first connection hole; 80. a second connection hole; 90. and a third connection hole.

Detailed Description

The application is described in further detail below with reference to fig. 2-6.

The embodiment of the application discloses an injection mold with a high safety coefficient.

Referring to fig. 2 to 4, the injection mold with high safety coefficient comprises a movable mold 1 and a fixed mold 2, wherein a first plug-in block 3 corresponding to a first connecting hole of a product and a second plug-in block 4 corresponding to a second connecting hole of the product are installed on the movable mold 1, a first ejection mechanism 5 for driving the first plug-in block 3 and the second plug-in block 4 to eject synchronously is arranged on the movable mold 1, a third plug-in block 6 corresponding to a third connecting hole of the product is installed on the fixed mold 2, and a second ejection mechanism 7 for driving the third plug-in block 6 to eject is arranged on the fixed mold 2. The cavity is formed among the three plug-in blocks, the movable mould 1 and the fixed mould 2, the fixed mould 2 is provided with a glue injection port, and the movable mould 1 is connected with a push rod in a sliding manner.

The injection molding machine is communicated with the glue injection port, glue is injected into the glue injection port, a product can be molded in a cavity, during demolding, the second ejection mechanism 7 drives the third plug block 6 to eject firstly, then the movable mold 1 ejects from the fixed mold 2, the first ejection mechanism 5 drives the first plug block 3 and the second plug block 4 to eject, and finally the ejector rod ejects the product, so that the ejection of the product is realized.

Referring to fig. 3 and 4, the second release mechanism 7 includes a sliding block 71 and a driving member for driving the sliding block 71 to slide, the driving member is set as a first oil cylinder 72, the sliding block 71 slides on the fixed mold 2, the first oil cylinder 72 is fixedly mounted on the fixed mold 2, a sliding gap 711 is formed on the sliding block 71, the sliding block 71 is located in the sliding gap 711 and slides on a connecting block 712, limiting surfaces 713 are formed at two ends of the sliding block 71, a sliding direction of the connecting block 712 is consistent with a sliding direction of the sliding block 71, and a piston rod end of the first oil cylinder 72 is fixedly connected with the connecting block 712.

The sliding block 71 is internally provided with a T-shaped groove 714, one end of the third plug-in block 6 far away from the third connecting hole is provided with a T-shaped block 61, the length direction of the T-shaped groove 714 is perpendicular to the length direction of the T-shaped block 61, and the sliding direction of the sliding block 71 is arranged at an included angle with the length direction of the T-shaped groove 714. The first oil cylinder 72 drives the connecting block 712 to move outwards, when the connecting block 712 abuts against the limiting surface 713, the sliding block 71 is driven to move synchronously, and then the third plug-in block 6 is released under the action of the T-shaped groove 714 and the T-shaped block 61.

Referring to fig. 3 and 5, a safety needle 8 is mounted on a movable mold 1, the length direction of the safety needle 8 is parallel to the demolding direction, the sliding direction of a sliding block 71 is perpendicular to the length direction of the safety needle 8, a hooking block 9 is integrally formed on the sliding block 71, the length direction of the hooking block 9 is parallel to the sliding direction of the sliding block 71, a hooking part 81 is formed on the safety needle 8, wherein the hooking part 81 is provided with a hooking groove, the shape of the hooking groove is matched with the surface of the hooking block 9, and when the sliding block 71 slides, the hooking block 9 is in sliding fit with the hooking groove; in addition, an avoiding opening 91 for avoiding the safety needle 8 is formed in the hooking block 9, and when the hooking groove of the safety needle 8 slides to the avoiding opening 91 along the hooking block 9, the safety needle 8 is separated from the hooking block 9 at this time, so that the demolding operation can be performed.

In the die closing state, the safety needle 8 is hooked with the hooking block 9, the movable die 1 and the fixed die 2 cannot be separated, and when the first oil cylinder 72 drives the sliding block 71 to slide outwards until the third plugging block 6 is separated from the third connecting hole, at the moment, the safety card moves to the avoiding opening 91 of the hooking block 9, and at the moment, the movable die 1 and the fixed die 2 can perform the die releasing action. In this way, when the second escape mechanism 7 fails and the third plug-in block 6 is not disengaged from the third connecting hole, the movable mold 1 and the fixed mold 2 cannot be disengaged, which helps to prevent damage to the product, i.e., the safety factor of the injection mold is higher.

The limiting groove 10 is formed in the sliding block 71, the length direction of the limiting groove 10 is perpendicular to the length direction of the hooking block 9, the mounting block 20 is fixedly mounted on the fixed die 2, the limiting block 201 is inserted and slipped in the mounting block 20, and the limiting block 201 is in plug-in fit with the limiting groove 10, so that the positioning and limiting of the sliding block 71 are realized.

Referring to fig. 5 and 6, a sliding groove 30 is further formed in the sliding block 71, the sliding groove 30 is perpendicular to the limit groove 10 in a crossing manner, a pushing piece is slidably connected in the sliding groove 30 in the sliding block 71, the pushing piece is set to be a pushing rod 40, the pushing rod 40 is connected with the connecting block 712, an inserting groove 401 inserted with the limiting block 201 is formed in the pushing rod 40, a conical pushing portion 402 is formed on one side of the pushing rod 40, located in the inserting groove 401, of the pushing rod 40, and the pushing portion 402 can push the limiting block 201 to be separated from the limit groove 10.

The first oil cylinder 72 will preferentially drive the connecting block 712 to slide, synchronously drive the pushing rod 40 to slide, under the action of the pushing part 402, the limiting block 201 is pushed up and separated from the limiting groove 10, at this time, the connecting block 712 abuts against the abutting surface of the sliding block, and then the sliding block 71 slides synchronously along with the connecting block 712, so as to realize demolding.

The installation piece 20 is provided with the reset piece that makes stopper 201 reset, and when the compound die, slider 71 inwards slides until spacing groove 10 is located the stopper 201 under, and the reset piece makes stopper 201 reset this moment, pegging graft with spacing groove 10, and then realizes the location to slider 71, helps preventing that slider 71 from removing excessively, influences the shaping of product.

The reset piece is set to reset spring 50, and reset spring 50's length direction is parallel with stopper 201's direction of movement, and reset spring 50's one end is connected with installation piece 20, and the other end is connected with stopper 201, and pushing away portion 402 jack-up stopper 201 back, slider 71 slides, and afterwards, the lower extreme of stopper 201 slides on the surface of slider 71, and when slider 71 resets, the spacing groove 10 can move to the below of stopper 201 between, under reset spring 50's effect, can realize stopper 201 and spacing groove 10's grafting.

The mounting block 20 is provided with a positioning groove 202 which is in plug-in fit with the safety needle 8 to position the safety needle 8.

Referring to fig. 2 and 3, the first release structure includes a linkage block 51 and a second cylinder 52 driving the linkage block 51 to slide, the first plug block 3 is integrally formed on the linkage block 51, the second plug block 4 is fixedly connected with the linkage block 51, and a piston rod end of the second cylinder 52 is fixedly connected with the linkage block 51. The second oil cylinder 52 is operated to realize the disengagement of the first plug-in block 3 and the second plug-in block 4.

The implementation principle of the injection mold with high safety coefficient in the embodiment of the application is as follows: after the product is injection molded, the first oil cylinder 72 drives the connecting block 712 to slide until the connecting block 712 is abutted with the limiting surface 713, and at the moment, the pushing part 402 on the pushing rod 40 pushes up the limiting plate, so that the limiting block 201 and the sliding block 71 are in contact limiting; subsequently, the sliding block 71 slides along with the connecting block 712 until the avoiding opening 91 of the hooking block 9 slides to the hooking groove of the safety needle 8, at this time, the third plugging block 6 is pulled out from the third connecting hole, and the moving die 1 moves to be disconnected with the fixed die 2; and then the second oil cylinder 52 runs to realize the release of the first plug-in block 3 and the second plug-in block 4, and finally the ejector rod ejects the product, so that the demolding operation of the product can be realized.

In the mold closing state, the safety needle 8 is utilized to lock the sliding block 71 in a hooking way, when the second release mechanism 7 fails, the movable mold 1 and the fixed mold 2 cannot be released, and products are protected, namely, the safety coefficient of the injection mold is higher.

The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims

1. An injection mold with high safety coefficient, which is characterized in that: the novel plastic injection molding machine comprises a movable mold (1) and a fixed mold (2), wherein a first plug-in block (3) corresponding to a first connecting hole of a product and a second plug-in block (4) corresponding to a second connecting hole of the product are arranged on the movable mold (1), a first ejection mechanism (5) for driving the first plug-in block (3) and the second plug-in block (4) to eject synchronously is arranged on the movable mold (1), a third plug-in block (6) corresponding to a third connecting hole of the product is arranged on the fixed mold (2), and a second ejection mechanism (7) for driving the third plug-in block (6) to eject is arranged on the fixed mold (2);

The second release mechanism (7) comprises a sliding block (71) and a driving piece for driving the sliding block (71) to slide, the sliding block (71) is connected with a third plug-in block (6), a safety needle (8) is arranged on the movable die (1), the length direction of the safety needle (8) is consistent with the demolding direction of the movable die (1), the sliding direction of the sliding block (71) is perpendicular to the length direction of the safety needle (8), a hooking block (9) is arranged on the sliding block (71), a hooking part (81) hooked with the hooking block (9) is formed on the safety needle (8), and a avoiding opening (91) for avoiding the hooking part (81) is formed on the hooking block (9); when the sliding block (71) slides and the third plug-in block (6) is separated from the third connecting hole, the hooking part (81) is positioned at the avoiding opening (91).

2. The high safety factor injection mold of claim 1, wherein: t-shaped grooves (714) are formed in the sliding blocks (71), T-shaped blocks (61) are formed at one ends, far away from the third connecting holes, of the third plug-in blocks (6), the length direction of each T-shaped groove (714) is perpendicular to the length direction of each T-shaped block (61), and the sliding direction of each sliding block (71) is arranged at an included angle with the length direction of each T-shaped groove (714).

3. The high safety factor injection mold of claim 1, wherein: the sliding block (71) is provided with a connecting block (712), the driving piece is provided with a first oil cylinder (72), and the end part of a piston rod of the first oil cylinder (72) is connected with the connecting block (712).

4. A high safety factor injection mold according to claim 3, wherein: a sliding gap (711) is formed on the sliding block (71), the connecting block (712) slides in the sliding gap (711), the sliding direction of the connecting block (712) is parallel to the sliding direction of the sliding block (71), limiting surfaces (713) are formed at two ends of the sliding block (71) at the sliding gap (711), and the sliding block (71) is driven to synchronously slide when the connecting block (712) slides to be abutted against the limiting surfaces (713); the fixed die is characterized in that a limiting block (201) is fixed on the fixed die (2), a limiting groove (10) is formed in the sliding block (71), the limiting block (201) is in plug-in connection with the limiting groove (10), a sliding groove (30) is formed in the sliding block (71), the sliding groove (30) is perpendicular to the limiting groove (10), a pushing part used for pushing the limiting block (201) out of the limiting groove (10) is arranged in the sliding block (71) in a sliding mode, the pushing part is connected with the connecting block (712), and a resetting part used for resetting the limiting block (201) is further arranged on the fixed die (2).

5. The high safety factor injection mold of claim 4, wherein: the pushing piece is arranged to be a pushing rod (40), an inserting groove (401) which is inserted into the limiting block (201) is formed in the pushing rod (40), and a conical pushing part (402) is formed on one side of the pushing rod (40) located in the inserting groove (401).

6. The high safety factor injection mold of claim 4, wherein: the reset piece is set to reset spring (50), install piece (20) have set firmly on cover half (2), stopper (201) are pegged graft and are slided on install piece (20), the one end and the installation piece (20) of reset spring (50) are connected, and the other end is connected with stopper (201), the length direction of reset spring (50) is unanimous with the direction of movement of stopper (201).

7. The high safety factor injection mold of claim 6, wherein: the mounting block (20) is provided with a positioning groove (202), and the safety needle (8) is spliced with the positioning groove (202).

8. The high safety factor injection mold of claim 1, wherein: the first release mechanism (5) comprises a linkage block (51) and a second oil cylinder (52), the first plug-in block (3) is integrally formed on the linkage block (51), the second plug-in block (4) is fixedly connected with the linkage block (51), and the end part of a piston rod of the second oil cylinder (52) is fixedly connected with the linkage block (51).