A gate collector for injection molded products

Abstract

This utility model belongs to the field of injection molding technology and provides a gate collector for injection molded products, including: a box body, a collection port, a pneumatic shear, and a collector fixing bracket. The box body has an internal space for accommodating gate particles; the collection port is opened on the upper side wall of the box body for the injection molded product gate to enter the box body; the pneumatic shear is fixedly installed inside the box body at a position corresponding to the collection port for cutting the gate entering the collection port; the collector fixing bracket is fixedly connected to the box body for positioning the box body at a predetermined position on the robot's running path. After the injection molded part is demolded, the robot directly carries the product to the collection port, and the pneumatic shear completes the gate cutting inside the box body, with the cut-off gate particles immediately falling into the internal space of the box body. This process requires no manual intervention, achieving complete separation and centralized collection of the gate and product, improving workshop cleanliness.

Description

Technical Field

[0001] This utility model belongs to the field of injection molding technology, and in particular to a gate collector for injection molded products. Background Technology

[0002] Injection molds generally use two types of gate injection methods: cold runner and hot runner. Cold runner molds can result in residual gate material in the product during the injection process, which requires subsequent trimming.

[0003] The existing trimming method involves a robotic arm picking up the part, a pneumatic shearing device mounted on the robotic arm's tooling, and simultaneous trimming of the product's glue inlet after removal. This method has the following drawbacks:

[0004] 1. If the glue inlet is not fully cured, the glue may be cut unevenly and may stick to the bottom of the product or the cutter tip, which may cause secondary contamination of the product.

[0005] 2. After curing, the gate will be trimmed off and splash everywhere, which will not only affect the on-site environment, but also easily fall into the product and cause secondary pollution.

[0006] CN216139294U discloses a device for eliminating bottom protrusions in injection-molded plastic buckets, including a base and a bucket body. The top of the base has a placement groove, within which two fixing mechanisms are symmetrically arranged. The bucket body is placed in the placement groove. The bottom of the placement groove has a square groove containing a storage mechanism. Two push rod motors are mounted on the inner wall of the square groove. A fixing box is fixedly mounted on the output shaft of each push rod motor, and a cutting shaft with a cutting blade is rotatably mounted on the fixing box. However, after removing the protrusions, the cut protrusions scatter around the device or on the base, and there is no dedicated collection device for them. This makes the work area easily contaminated by the cut protrusions, increasing the difficulty and workload of cleaning, and is also detrimental to maintaining a clean working environment. Utility Model Content

[0007] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a gate collector that can completely separate the gate from the product and collect the gate of injection molded products, thereby improving the working environment and increasing the cleanliness of the workshop.

[0008] The technical solution adopted by this utility model to solve the technical problem is:

[0009] This utility model provides a gate collector for injection molded products, comprising: a box body, a collection port, a pneumatic shear, and a collector fixing bracket. The box body has an internal space for accommodating gate particles; the collection port is opened on the upper side wall of the box body for allowing the injection molded product gate to enter the box body; the pneumatic shear is fixedly installed inside the box body at a position corresponding to the collection port for cutting the gate entering the collection port; the collector fixing bracket is fixedly connected to the box body for positioning the box body at a predetermined position on the robot's operating path.

[0010] Furthermore, the discharge port gate is slidably disposed at the bottom of the box body and can switch between a closed position and an open position to control the discharge of the sprue particles.

[0011] Furthermore, it also includes an observation window, which is installed on the side wall of the housing and is used to observe the accumulation of gate particles in the internal space in real time.

[0012] Furthermore, the pneumatic shears include: a fixed blade holder and a movable blade. The fixed blade holder is fixedly connected to the inner wall of the box, and the movable blade is driven by a cylinder and pivotally connected to the fixed blade holder, enabling it to reciprocate between the shearing position and the open position. After shearing is completed, the movable blade returns to the open position, allowing the cut gate particles to fall into the internal space.

[0013] Furthermore, the side wall of the box body is provided with an inclined material guiding surface, the lower end of which is connected to the discharge port gate to guide the sprue particles to gather at the discharge port gate.

[0014] Furthermore, the inner wall of the box is polished to reduce the adhesion of gate particles.

[0015] The advantages and positive effects of this utility model are:

[0016] 1. After the injection molded part is demolded, the robotic arm directly carries the product to the collection port. Pneumatic shears cut the gate inside the box, and the cut gate particles immediately fall into the internal space of the box. This process requires no manual intervention, achieving complete separation of the gate and the product and centralized collection, improving the cleanliness of the workshop.

[0017] 2. The observation window of this utility model is set on the side wall of the box, so that the operator can judge the amount of sprue particles in real time without stopping the machine; when the accumulation reaches the set height, the sprue particles can be quickly discharged by simply sliding the discharge port gate to avoid overflow and blockage and ensure continuous production.

[0018] 3. The box body of this utility model is set with an inclined material guiding surface, so that the sprue particles naturally converge to the gate plate under the action of gravity, reducing dead corner residue; combined with the polished inner wall, it greatly reduces particle adhesion, and the discharge is thorough and the cleaning frequency is reduced.

[0019] 4. The shearing and collection processes of this utility model are completed within a closed box, avoiding splashing from the pouring gate that could cause injury, improving the working environment, and meeting the dual requirements of safety and environmental protection in modern factories. Attached Figure Description

[0020] Figure 1 This is the front view of the present invention;

[0021] Figure 2 This is a three-dimensional structural diagram of the present invention (first angle);

[0022] Figure 3 This is a three-dimensional structural diagram of the present invention (second angle). Detailed Implementation

[0023] The present invention will be further described in detail below through specific embodiments. The following embodiments are only descriptive and not limiting, and should not be used to limit the protection scope of the present invention.

[0024] Example 1

[0025] like Figure 1 As shown, the gate collector mainly consists of a box body 1, a collection port 4, a pneumatic shear 5, a collector fixing bracket 6, a discharge port gate 3, and an observation window 2.

[0026] The box body 1 is made of thin stainless steel sheet bent and welded, with a closed top and side walls forming an internal space to accommodate the sprue granules. A rectangular collection port 4 is opened on the upper left side wall of the box body 1. The outer opening edge of the collection port 4 is rounded to avoid scratching the bottom of the box.

[0027] The pneumatic shears 5 are bolted inside the housing 1 and face the collection port 4. The pneumatic shears 5 include a fixed blade holder and a movable blade. The fixed blade holder is welded to the inner wall of the housing 1; the movable blade is pivotally connected to the fixed blade holder via a pin and driven by a small cylinder controlled by an external solenoid valve. The cylinder stroke is set so that a single cut can completely sever common gates. After cutting, the cylinder reverses direction, pulling the movable blade back to the open position, and the cut gate particles fall to the bottom of the housing 1 under gravity.

[0028] The discharge gate 3 is a stainless steel plate with slide rails on both sides. The slide rails are fixed to the two sides of the bottom opening of the box 1 by screws. A handle can be welded to the outer end of the gate 3, which can be manually pulled horizontally. When discharge is required, the operator pulls the gate 3 to the open position, and the sprue particles can automatically slide down the inclined guide surface 11 to the recycling box or conveyor belt below.

[0029] The observation window 2 is made of transparent acrylic sheet and is installed in the center of the front and rear side walls of the housing 1 by four countersunk bolts. The operator can observe the height of the sprue particles in real time through the observation window 2 and decide whether to discharge the material without stopping the machine.

[0030] The inclined guide surface 11 has an angle of 45° to 70° with the horizontal plane, and its lower end is directly opposite the discharge gate 3 to ensure that there is no residue during discharge. The entire inner wall of the box body 1 is electrolytically polished, which significantly reduces the probability of gate particles adhering.

[0031] The working process of this gate collector is as follows:

[0032] 1) After the injection molded part is demolded, the robot arm grips the product and moves it to the collection port 4;

[0033] 2) The robotic arm extends the gate into the collection port 4, triggering the external solenoid valve, and the cylinder pushes the movable blade to complete the shearing;

[0034] 3) The movable blade resets, and the gate particles fall into box 1;

[0035] The operator monitors the accumulation through observation window 2. When the accumulation height reaches the preset value, the operator pulls the discharge gate 3 to discharge the material. After the material is discharged, the operator pushes back the gate 3 to continue the next production cycle.

[0036] Example 2

[0037] To further reduce manual intervention, a pneumatic gate valve can be added at the discharge gate 3 and interlocked with the injection molding machine control system. When the photoelectric sensor detects that the height of the sprue particles in the box 1 has reached the upper limit, the control system automatically opens the gate valve to discharge the material; after discharge, it automatically closes, realizing fully automated operation.

[0038] As can be seen from the above embodiments, the injection molding product gate collector of the present invention has a simple structure, flexible installation, and convenient maintenance. It can significantly improve gate recycling efficiency and site cleanliness, and is suitable for online gate processing of injection molding machines of various specifications.

[0039] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the concept of the utility model, and these all fall within the protection scope of the present utility model.

Claims

1. A sprue collector for injection molded products, characterized in that include: Box body (1), said box body (1) having an internal space for accommodating gate particles; Collection port (4), which is located on the upper side wall of the box body (1) and is used to allow the injection molded product gate to enter the box body (1); Pneumatic shears (5), the pneumatic shears (5) are fixedly installed inside the box body (1) at a position corresponding to the collection port (4), and are used to cut the gate that enters the collection port (4); Collector fixing bracket (6), which is fixedly connected to the box body (1) and is used to position the box body (1) at a predetermined position on the robot arm's running path.

2. The injection molded product sprue collector of claim 1, wherein, It also includes a discharge port gate (3), which is slidably disposed at the bottom of the box body (1) and can be switched between a closed position and an open position to control the discharge of the sprue particles.

3. The injection molded product sprue collector of claim 2, wherein, It also includes an observation window (2), which is installed on the side wall of the box body (1) for real-time observation of the amount of sprue particles in the internal space.

4. The injection molded product sprue collector of claim 3, wherein, The pneumatic scissors (5) include: The fixed knife holder is fixedly connected to the inner wall of the box (1); The movable blade, driven by a cylinder and pivotally connected to the fixed blade holder, can reciprocate between the shearing position and the open position; after shearing is completed, the movable blade returns to the open position, allowing the cut gate particles to fall into the internal space.

5. The injection molded product sprue collector of claim 4, wherein, The side wall of the box (1) is provided with an inclined material guiding surface (11), the lower end of which is connected to the discharge port gate (3) to guide the sprue particles to gather at the discharge port gate (3).

6. The injection molded product sprue collector of claim 5, wherein, The inner wall of the box body (1) is polished to reduce the adhesion of gate particles.

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