Hole-dividing clamping jig

Abstract

The utility model provides a cavity-dividing clamping jig. The cavity-dividing clamping jig comprises a base plate; the clamping mechanism comprises two pneumatic fingers and two transmission rods, the two pneumatic fingers are arranged on the base plate, the two ends of each transmission rod are connected to the clamping fingers, located on the same side, of the two pneumatic fingers, each transmission rod is provided with a plurality of chucks, and the chucks on the two transmission rods are opposite in pairs so as to clamp injection molding products; the distance between every two opposite chucks is larger than the distance between the two clamping fingers of each pneumatic finger close to each other. Each chuck is far away from the base plate compared with a clamping finger of the pneumatic finger; the static electricity removing mechanism comprises a blowing seat which is located between two clamping fingers of the pneumatic finger in the width direction of the base plate, and a plurality of air outlets used for blowing air to injection molding products are formed in the end face, facing a chuck, of the blowing seat. The infrared sensing mechanism comprises a plurality of infrared sensors, and sensing infrared rays of each infrared sensor coincide with the central axis of the corresponding air outlet and are located between every two opposite chucks.

Description

Technical Field

[0001] The utility model belongs to the technical field of plastic parts molding, and particularly relates to a hole-dividing clamping fixture. Background Art

[0002] At present, for products formed by injection molding, when there is a requirement for cavity separation, most of them use an external robot to clamp the product to achieve automatic cavity separation. This robot is equipped with a jig, a fixture, a suction cup or a nozzle connected to the jig, so as to achieve cavity separation by adsorption or clamping. However, for some products with small volume, small area and high precision requirements, when using a robot for clamping, it is easy for the clamp to loosen and fail to be clamped successfully; if the structure of the product itself is relatively weak, it is easy to cause over-clamping when the clamping is successful, causing damage to the product; and during the process of mold opening and demolding, the injection molded product will generate friction with the mold cavity, at this time, the displacement of charge will be generated, so that static electricity will be formed on the surface of the product. When the product volume is small, it is very easy to fail to separate from the jig chuck of the robot due to electrostatic adsorption, so that the cavity cannot be separated smoothly, and the mold may be crushed in the next cavity separation cycle. Utility Model Content

[0003] In view of the above-mentioned problems existing in the existing mold manufacturing technology, the main purpose of the utility model is to provide a cavity clamping jig. The provided cavity clamping jig can effectively avoid missed clamping, over-clamping and electrostatic adsorption when performing cavity clamping on multiple products in the mold, which is conducive to the smooth progress of the production process.

[0004] The purpose of the utility model is achieved through the following technical solutions:

[0005] The utility model provides a point-by-point clamping fixture, which comprises:

[0006] substrate;

[0007] A clamping mechanism, wherein the clamping mechanism comprises two pneumatic fingers and two transmission rods, wherein the two pneumatic fingers are arranged on the base plate, and both ends of each transmission rod are connected to the clamping fingers of the two pneumatic fingers on the same side, and each transmission rod is provided with a plurality of clamps, and the plurality of clamps on the two transmission rods are opposite to each other in pairs to clamp the injection molded product; the distance between the two opposite clamps is greater than the relative distance between the two clamping fingers of each pneumatic finger; and each clamp is farther away from the base plate than the clamping fingers of the pneumatic fingers;

[0008] A static electricity removal mechanism, wherein the static electricity removal mechanism includes a blowing seat located between two clamping fingers of the pneumatic finger in the width direction of the substrate, and a plurality of air outlets for blowing air to the injection molded product are provided on the end surface thereof facing the clamping head;

[0009] The infrared sensing mechanism comprises a plurality of infrared sensors, wherein the infrared rays sensed by each infrared sensor coincide with the central axis of the air outlet between the clamps that are opposite to each other.

[0010] As a further description of the above technical solution, the ends of the pneumatic fingers facing away from the substrate do not protrude from the end surface of the transmission rod facing away from the substrate;

[0011] The clamps all protrude from the end surface of the transmission rod facing away from the base plate.

[0012] As a further description of the above technical solution, the top edge of each chuck used to clamp the injection molded product adopts a rounded transition.

[0013] As a further description of the above technical solution, two ends of the blowing seat are connected to the main bodies of the two pneumatic fingers through a connecting plate.

[0014] As a further description of the above technical solution, the end surface of the blowing seat facing away from the substrate does not protrude beyond the end of the clamping finger of the pneumatic finger facing away from the substrate.

[0015] The outstanding effects of the utility model are:

[0016] The utility model provides a hole-dividing clamping fixture comprising: a base plate; a clamping mechanism, the clamping mechanism comprising two pneumatic fingers and two transmission rods, the two pneumatic fingers are arranged on the base plate, both ends of each transmission rod are connected to the clamping fingers of the two pneumatic fingers on the same side, each transmission rod is provided with a plurality of clamps, the plurality of clamps on the two transmission rods are opposite to each other to clamp the injection molded product; the distance between the two opposite clamps is greater than the relative distance between the two clamping fingers of each pneumatic finger; each clamp is farther away from the base plate than the clamping fingers of the pneumatic fingers; a static electricity removal mechanism, the static electricity removal mechanism The blow seat included is located between the two clamping fingers of the pneumatic finger in the width direction of the substrate, and a plurality of air outlets for blowing air to the injection molded product are provided on the end surface facing the clamp head; the infrared sensing mechanism includes a plurality of infrared sensors, and the infrared sensing rays of each infrared sensor coincide with the central axis of the air outlet between the two opposing clamp heads. The cavity clamping fixture is connected to the manipulator, and the cavity clamping of multiple products in the mold can effectively avoid the occurrence of missed clamping, over-clamping and electrostatic adsorption, which is conducive to the smooth progress of the production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the acupuncture clamping fixture in the utility model;

[0018] Figure 2 This is a front view of the hole-dividing clamping fixture in the utility model;

[0019] Figure 3 It is a side view of a hole-dividing clamping fixture in the prior art.

[0020] Description of Figure Numbers:

[0021] 1. Base plate; 2. Pneumatic fingers; 21. Clamping fingers; 22. Main body; 3. Transmission rod; 4. Clamp; 5. Blow seat; 51. Air outlet; 6. Infrared sensing; 7. Connecting plate; d1. The distance between the two clamps when they are fully opened relative to each other; d2. The distance that one clamping finger of each pneumatic finger moves relative to another clamping finger. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present utility model, it should be noted that the terms "upper", "middle", "lower", "inner", "outer", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model. The terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. The following describes the implementation method of the present utility model based on its overall structure.

[0024] See also Figures 1 to 3 One embodiment of the utility model discloses a point-dividing clamping fixture, which includes:

[0025] substrate1;

[0026] A clamping mechanism, the clamping mechanism comprises two pneumatic fingers 2 and two transmission rods 3, the two pneumatic fingers 2 are arranged on the substrate 1, both ends of each transmission rod 3 are connected to the clamping fingers 21 of the two pneumatic fingers 2 located on the same side, each transmission rod 3 is provided with a plurality of chucks 4, the plurality of chucks 4 on the two transmission rods 3 are opposite to each other to clamp the injection molded product; the distance between the two opposite chucks 4 is greater than the relative distance between the two clamping fingers 21 of each pneumatic finger 2; each chuck 4 is farther away from the substrate 1 than the clamping fingers 21 of the pneumatic fingers 2;

[0027] A static electricity removal mechanism, wherein the static electricity removal mechanism includes a blowing seat 5 located between two clamping fingers 21 of the pneumatic finger 2 in the width direction of the substrate 1, and a plurality of air outlets 51 for blowing air into the injection molded product are provided on the end surface thereof facing the clamp 4;

[0028] The infrared sensing mechanism includes a plurality of infrared sensors, and the infrared rays 6 sensed by each infrared sensor coincide with the central axis of the air outlet 51 between the clamps 4 that are opposite to each other.

[0029] With the above structure, after the mold is opened, the injection molded product remains in the back mold of the mold, and the sub-hole clamping jig can be used to clamp the injection molded product. It should be understood that before using the sub-hole clamping jig to clamp the injection molded product, the sub-hole clamping jig has been stably installed on the manipulator, and the multiple chucks 4 on the two transmission rods 3 are opposite to each other, and are in a relatively open state at this time, and the multiple infrared sensors included in the infrared sensing mechanism all emit infrared sensing lines along the central axis of the air outlet 51; after the mold is opened, the sub-hole clamping jig as a whole is driven by the manipulator to approach the injection molded product to a preset position, and the two pneumatic fingers 2 in the clamping mechanism are actuated, and the clamping fingers 21 of the two pneumatic fingers 2 are relatively close, so that the transmission rod 3 drives the multiple chucks 4 to approach each other in pairs to clamp the injection molded product. plastic product; then, the injection molded product is taken out from the rear mold and transferred to the product turnover station under the drive of the manipulator. In the process of taking the injection molded product out from the rear mold and transferring it to the product turnover station, the static-eliminating mechanism will implement static-eliminating operation on the injection molded product, and the static-eliminating gas is blown out from the multiple air outlets 51 set on the blowing seat 5 and reaches the injection molded product, thereby ensuring that after the injection molded product is transferred to the product turnover station, there will be no static adsorption between the injection molded product and the chuck 4, so that the multiple chucks 4 can be smoothly separated from the injection molded product in the process of opening in pairs and moving away from each other, and the possibility of crushing the rear mold of the mold in the downward pressure and clamping cycle operation is avoided. The setting of the infrared sensing mechanism enables the chuck 4 of the clamping mechanism to move to the preset clamping position until it is transferred to the product turnover station and placed. After that, the injection molded product is in the sensing range of the sensing infrared rays 6 of the multiple infrared sensors, ensuring that the injection molded product can be detected and fed back in time when the clamping loose problem occurs. Among them, the distance between the two chucks 4 that are relatively opposite to each other is set to be greater than the relatively close distance between the two clamping fingers 21 of each of the pneumatic fingers 2, which also ensures that the pneumatic fingers 2 are relatively close to each other and drive the chucks 4 to be relatively close to each other in pairs to clamp the injection molded product but not over-clamp it, that is, it avoids the situation where the chucks 4 clamp the injection molded product too tightly in pairs, ensuring that the surface of the injection molded product will not be damaged.

[0030] See also Figures 1 to 3Specifically, in this embodiment, the substrate 1 is vertically arranged, and its left end surface is used for the assembly of various mechanisms, wherein the two pneumatic fingers 2 included in the clamping mechanism are arranged on the left end surface of the substrate 1 in the vertical direction, and its main body 22 is fixedly connected to the left end surface of the substrate 1, and the two clamping fingers 21 arranged at the left ends of the two main bodies 22 can slide in the front-to-back direction. The two transmission rods 3 are both rectangular and arranged in the vertical direction. The upper and lower ends of each transmission rod 3 are respectively connected to the outer side of the clamping finger 21 of a pneumatic finger 2. Each transmission rod 3 is provided with four clamps 4, and two groups of eight clamps 4 are arranged in pairs in front and back correspondence, so that when the two pneumatic fingers 2 are synchronously operated, the four clamping fingers 21 can simultaneously drive the eight clamps 4 to move relatively close to / away in the front-to-back direction through the transmission rod 3, thereby implementing the clamping / relaxing action of the injection molded product. In this embodiment, the two transmission rods 3 are straight rods, and two groups of 8 chucks 4 are arranged in two rows in the vertical direction to clamp the 4 clampable parts of the injection molded product. Of course, in other embodiments, the shape of the transmission rod 3 and the installation position of the chuck 4 can also be set by connecting points into lines according to the number and position of the clampable parts of the injection molded product, for example, the two transmission rods 3 are parallel wavy lines. Of course, in other embodiments, the number of chucks 4 can also be adaptively set according to the number of clampable parts of the injection molded product.

[0031] Specifically, in the present embodiment, the left end portion of the clamping finger 21 of the pneumatic finger 2 is flush with the left end surface of the transmission rod 3; each of the clamping heads 4 is connected to the inner end surface of the transmission rod 3, and the top portion (left end) thereof protrudes from the left end surface of the transmission rod 3, thereby avoiding the possibility that the clamping finger 21 of the pneumatic finger 2 collides with the injection molded product and causes damage to the injection molded product when the clamping head 4 clamps the injection molded product.

[0032] Specifically, in this embodiment, the top edge of each chuck 4 used to clamp the injection molded product adopts a rounded transition, and there is no stress concentration point on the surface of the injection molded product, thereby avoiding edge damage to the injection molded product when the chucks 4 clamp the injection molded product in pairs.

[0033] Specifically, in the present embodiment, the blowing seat 5 is also in the shape of a vertically arranged rectangular block, and its upper and lower ends are connected to the outer sides of the main bodies 22 of the two pneumatic fingers 2 through horizontally arranged connecting plates 7, and four through holes are arranged along the left and right directions, and its left end is the air outlet 51, and each through hole is arranged between two corresponding chucks 4 in the front and rear directions, and its right end is connected to the gas generating assembly, so that the gas generated by the gas generating assembly is guided to the injection molded product clamped by the chuck 4 through the four through holes to remove the static electricity on its surface, so that it will not be sucked onto the chuck 4 due to electrostatic adsorption in the future.

[0034] Specifically, in this embodiment, the left end surface of the blowing seat 5 is flush with the left end of the clamping finger 21 of the pneumatic finger 2, so that the static electricity removal mechanism will not affect the clamping operation of the injection molded product by the chuck 4 while performing the blowing static electricity removal operation. Of course, in other embodiments, the left end surface of the blowing seat 5 can also be slightly lower than the left end of the clamping finger 21 of the pneumatic finger 2 (on the horizontal axis). The blowing seat 5 is located between the two clamping fingers 21 of the pneumatic finger 2 in the front-to-back direction, so that when the two clamping fingers 21 are relatively close to each other in the front-to-back direction, each clamping finger 21 moves relatively close to another clamping finger 21 of the same group, that is, the distance between the clamping finger 21 and the blowing seat 5 when it is in a fully opened state. When the inner side surfaces of the two clamping fingers 21 of each pneumatic finger 2 are respectively against the front and rear end surfaces of the blowing seat 5, the clamps 4 facing each other in the front and rear directions can stably clamp the injection molded product with an appropriate clamping force. Therefore, when the clamps 4 facing each other are relatively fully opened, the distance d1 between the two is twice the distance d2 that one clamping finger 21 of each pneumatic finger 2 moves relative to another clamping finger 21 and the sum of the thickness of the clampable part of the injection molded product.

[0035] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not limited to the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any changes, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A hole-dividing clamping fixture, characterized in that: include: substrate; A clamping mechanism, wherein the clamping mechanism comprises two pneumatic fingers and two transmission rods, wherein the two pneumatic fingers are arranged on the base plate, and both ends of each transmission rod are connected to the clamping fingers of the two pneumatic fingers on the same side, and each transmission rod is provided with a plurality of clamps, and the plurality of clamps on the two transmission rods are opposite to each other in pairs to clamp the injection molded product; the distance between the two opposite clamps is greater than the relative distance between the two clamping fingers of each pneumatic finger; and each clamp is farther away from the base plate than the clamping fingers of the pneumatic fingers; A static electricity removal mechanism, wherein the static electricity removal mechanism includes a blowing seat located between two clamping fingers of the pneumatic finger in the width direction of the substrate, and a plurality of air outlets for blowing air to the injection molded product are provided on the end surface thereof facing the clamping head; The infrared sensing mechanism comprises a plurality of infrared sensors, wherein the infrared rays sensed by each infrared sensor coincide with the central axis of the air outlet between the clamps that are opposite to each other.

2. The hole-dividing clamping fixture according to claim 1 is characterized in that: The ends of the clamping fingers of the pneumatic fingers facing away from the substrate do not protrude from the end surface of the transmission rod facing away from the substrate; The clamps all protrude from the end surface of the transmission rod facing away from the base plate.

3. The hole-dividing clamping fixture according to claim 2 is characterized in that: The top edge of each clamp used for clamping the injection molded product adopts rounded transition.

4. The hole-dividing clamping fixture according to claim 2 is characterized in that: The two ends of the blowing seat are connected to the main bodies of the two pneumatic fingers through a connecting plate.

5. The hole-dividing clamping fixture according to claim 4 is characterized in that: The end surface of the blowing seat facing away from the substrate does not protrude beyond the end of the clamping finger of the pneumatic finger facing away from the substrate.

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