Injection molding product impact type pouring gate punching and removing device
By designing an impact gate removal device for injection molded products, the gate removal is removed by using the impact force from bottom to top, the problems of large labor consumption, slow speed, unstable output quality in the prior art are solved, and the gate removal is realized automatically, which improves the product surface accuracy and injection molding beat.
Patent Information
- Application Number
- CN202421765512.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-24
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-07-24
AI Technical Summary
The existing gate removal methods of injection molding products have problems such as high labor costs, slow speed, unstable output quality, high mold design requirements, inconvenient maintenance, and high costs.
A shock gate impregnation device for injection molding is designed to impact the gate from the product using the impact force from the bottom to the upper. By combining the positioning tooling and the impact cylinder, the gate is ensured to break at the finest point and improve the product surface accuracy.
It achieves no need to increase the cost of injection molding on a large scale, automatically remove gates, improve injection molding beats, free up manual labor, and ensure product surface accuracy.
Smart Images
Figure CN222858656U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of injection molding gate processing, in particular to an impact-type gate flushing device for injection molded products. Background Art
[0002] Due to the production process of injection molded products, there will be residual materials connected to the product in the flow channel, which is the gate of the injection molded product. In order to meet the shape accuracy of the injection molded product, the gate needs to be removed. At present, the commonly used methods for removing the gate in the industry are as follows:
[0003] Manual gate cutting: This method consumes a lot of manpower, is slow, and has unstable output quality.
[0004] Cutting the gate in the mold has high requirements for mold design and is inconvenient to maintain. At the same time, the mold is large in size, which increases the tonnage of the injection molding machine and increases the manufacturing cost.
[0005] Specific gate design eliminates the need for gates; the mold uses a three-plate mold point gate to achieve automatic separation after the gate is demoulded. However, due to the particularity of the product shape, this method cannot use the gate form of demoulding separation, and the three-plate mold is more expensive and more difficult.
[0006] Hot runner de-gating: In this de-gating method, the hot runner must be combined with a specific gate to achieve the purpose of automatic separation of the water outlet, which has strong limitations.
[0007] The robot operates the scissors to remove the gate; the scissors are used to cut the gate. This shearing method makes it difficult to keep the blade flat on the surface of the product and completely cut off the gate, and usually requires manual finishing. Utility Model Content
[0008] In view of the shortcomings of the above-mentioned existing production technology, the applicant provides a rationally structured impact-type gate flushing device for injection molding, which utilizes the impact force from bottom to top to knock the gate off the product. Due to the stress, the fracture position is at the thinnest part, so the impact gate removal method can effectively improve the surface accuracy of the product.
[0009] The technical solution adopted by the utility model is as follows:
[0010] An impact gate flushing device for injection molded products comprises a frame, a positioning tool is arranged on the frame, and the product to be processed is placed on the positioning tool.
[0011] The side of the positioning tool is movably provided with a tightening block, which abuts against the tightening gate during the reciprocating motion.
[0012] An impact cylinder is arranged below the positioning tooling, and the impact cylinder drives an impact rod, and the impact rod hits the product to be processed.
[0013] As a further improvement of the above technical solution:
[0014] The positioning tool comprises a positioning block body, a groove is formed on the positioning block body to form a receiving space, and the product to be processed is placed in the receiving space; the pressing block reciprocates and extends into the receiving space to abut against the product to be processed.
[0015] Both ends of the through groove opened on the positioning block body are open ends, and the groove width of the through groove is larger than the gate width and smaller than the width of the part to be processed.
[0016] The side walls on both sides of the positioning block body are matched with the outer contour shape of the product to be processed.
[0017] A recessed position for allowing the tightening block to pass through is reserved on the positioning block body, and the side of the tightening block facing the gate is concave and matches the shape of the gate.
[0018] The movement path of the tightening block and the movement path of the impact rod are perpendicular to each other.
[0019] An impact distance is reserved between the initial state of the impact rod and the product to be processed.
[0020] The axial length of the impact rod is greater than the width of the product to be processed in the same direction.
[0021] A push plate is connected to the piston rod of the impact cylinder, one or more transmission rods are arranged on the push plate, the transmission rods penetrate the positioning tooling, and the impact rod is connected to the top of the transmission rod.
[0022] The positioning tooling is provided with a product discharge channel and a gate discharge channel, and the product and gate are stored separately.
[0023] The beneficial effects of the utility model are as follows:
[0024] The utility model has a compact and reasonable structure and is easy to operate. By combining the special shape of the product to be processed, a de-gate structure is provided in which the positioning tooling fits the product shape and impacts from bottom to top. There is no need to increase the injection molding production cost on a large scale, liberate manual labor to achieve automation, and improve the injection molding cycle.
[0025] In the utility model, the positioning tool is obtained by slotting the middle of a positioning block shaped like a triangular prism. The inclined walls on both sides of the positioning block body can support the product to be processed, increase the contact area with the product to be processed, and ensure the relative position of the product to be stable as much as possible before impacting the gate.
[0026] The width of the accommodation space in the middle of the positioning block body is greater than the width of the gate, so that the product to be processed and the gate can be easily placed in the accommodation space. The clamping block extends from the recessed position on the positioning block body, and after clamping the gate, the piston rod of the impact cylinder extends, driving the impact rod to hit the product to be processed upward. Since the connection between the gate and the product to be processed is the thinnest part, under the action of the impact force, the brittle material breaks at the thinnest part due to the force, and the finished product with the gate removed is obtained.
[0027] The impact direction of the impact cylinder can be vertical or perpendicular to the product according to the shape of the product. The main purpose is to allow the thinnest part where the gate connects to the product to break quickly under stress. The design of the impact cylinder also takes into account the connection between the product and the gate. By impacting from the side where the center of gravity of the product is located, the inertia of the product can be used to accelerate the breakage of the gate. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 This is a schematic diagram of the product structure to be processed.
[0029] Figure 2 This is a schematic diagram of the structure of the robot arm of the present utility model.
[0030] Figure 3 This is a schematic diagram of the state of the robot arm of the utility model clamping the product to be processed.
[0031] Figure 4 It is a schematic diagram of the overall structure of the utility model.
[0032] Figure 5 for Figure 4 The enlarged view of part A is used to illustrate the structure of the positioning tooling.
[0033] Figure 6 It is a schematic diagram of another viewing angle of the overall structure of the utility model.
[0034] Among them: 1. Products to be processed; 2. Gates to be flushed; 3. Manipulator; 4. Clamping plate; 5. Frame; 6. Positioning tooling; 7. Impact assembly; 8. Product discharge channel; 9. Gate discharge channel;
[0035] 601, tightening cylinder; 602, tightening block; 603, positioning block body; 604, accommodating space;
[0036] 701, impact cylinder; 702, push plate; 703, transmission rod; 704, impact rod. DETAILED DESCRIPTION
[0037] The specific implementation of the present utility model is described below in conjunction with the accompanying drawings.
[0038] like Figure 1-Figure 6As shown, the injection molding impact gate flushing device of this embodiment includes a frame 5, on which a positioning fixture 6 is provided, and the product 1 to be processed is placed on the positioning fixture 6.
[0039] A tightening block 602 is movably provided on the side of the positioning tool 6. During the reciprocating motion of the tightening block 602, the tightening block 602 abuts against the tightening gate.
[0040] An impact cylinder 701 is provided below the positioning tool 6 , and the impact cylinder 701 drives an impact rod 704 , and the impact rod 704 hits the product 1 to be processed.
[0041] The positioning tool 6 includes a positioning block body 603 , on which a groove is formed to form an accommodation space 604 , and the product to be processed 1 is placed in the accommodation space 604 ; the pressing block 602 reciprocates and extends into the accommodation space 604 to abut against the product to be processed 1 .
[0042] Both ends of the through groove on the positioning block body 603 are open ends, and the groove width of the through groove is larger than the gate width and smaller than the width of the part to be processed.
[0043] The side walls on both sides of the positioning block body 603 are in line with the outer contour of the product 1 to be processed.
[0044] A recessed position is reserved on the positioning block body 603 to allow the tightening block 602 to pass through, and the side of the tightening block 602 facing the gate is concave and matches the shape of the gate.
[0045] The movement path of the tightening block 602 and the movement path of the impact rod 704 are perpendicular to each other.
[0046] An impact distance is reserved between the impact rod 704 and the product 1 to be processed in the initial state.
[0047] The axial length of the impact rod 704 is greater than the width of the product 1 to be processed in the same direction.
[0048] A push plate 702 is connected to the piston rod of the impact cylinder 701 , and one or more transmission rods 703 are arranged on the push plate 702 . The transmission rod 703 passes through the positioning tool 6 , and the impact rod 704 is connected to the top of the transmission rod 703 .
[0049] A product discharge channel 8 and a gate discharge channel 9 are led out from the positioning fixture 6, and the product and the gate are stored separately.
[0050] The overall structure and working principle of the utility model are as follows:
[0051] like Figure 1As shown, it is a schematic diagram of the structure of the injection molded product with the gate connected. One injection molding obtains two products to be processed 1 connected by the gate to be flushed 2. The connection point between the gate to be flushed 2 and the products to be processed 1 on both sides is the smallest. In this solution, especially for products made of brittle materials, such brittle materials can directly break the small connection parts under stress, thereby obtaining products with high surface shape accuracy.
[0052] like Figure 2 As shown, the impact gate flushing device is also equipped with a manipulator 3. The manipulator 3 adopts a plate-like structure with clamping plates 4 at both ends according to the number and distribution of the positioning tooling 6. The clamping plates 4 at both ends clamp a product 1 to be processed respectively and place it on two flushing positions of a positioning tooling 6.
[0053] like Figure 3 As shown, it is a schematic diagram of the state in which the robot 3 has grasped a group of products 1 to be processed.
[0054] like Figure 4 As shown, it is a schematic diagram of the structure of the device, including a frame 5 for installing a positioning tool 6, the frame 5 is arranged on the side of the product discharge channel 8, and the specific structure of the positioning tool 6 is referred to Figure 5 , with the frame 5 as the reference, a tightening cylinder 601 is installed, the piston rod of the tightening cylinder 601 extends in the direction pointing to the positioning fixture 6, and the piston rod is connected to a tightening block 602. The tightening block 602 is a special-shaped non-standard part, and the special concave structure of the tightening block 602 facing the side of the product to be processed 1 is to better fit with the product to be processed 1 and effectively limit the product to be processed 1.
[0055] like Figure 6 As shown, it can be clearly seen that there are two sets of different discharge paths, namely, a product discharge channel 8 and a gate discharge channel 9. Figure 6 It can be seen that the falling direction of the gate is vertically downward, and the falling direction of the product is toward both sides. When the gate falls, it directly falls on the top of the gate discharge channel 9, and then slides along the gate discharge channel 9 to the collection position.
[0056] Schematic diagram of the state in which the manipulator 3 places the product 1 to be processed on the positioning tooling 6 during use.
[0057] After the robot 3 is removed, the product 1 to be processed is placed on the limiting fixture. Due to the special shape of the product 1 to be processed, it has two Figure 1 The inclined arms are opened to both sides, so that the inclined arms just fall on the side walls of the positioning block body 603 of the positioning fixture 6, and there is as large a contact area as possible between the side walls of the positioning block body 603. At this time, the relative position of the product 1 to be processed is relatively stable.
[0058] The piston rod of the tightening cylinder 601 extends, and the tightening block 602 clamps the gate of the product 1 to be processed to limit the position. Figure 1 The gate is cross-shaped, including a gate section connected to the parts on both sides and a gate section connected to the injection port of the mold. Figure 1 The gate limit in the vertical direction, because the concave structure on the tightening block 602 is a special-shaped sink, which is completely in line with the shape of the gate, can simultaneously limit the movement of the product 1 to be processed in five directions, namely, upward, forward, backward, left and right. That is, after the piston rod of the tightening cylinder 601 is extended, the product 1 to be processed has been completely limited.
[0059] The piston rod of the impact cylinder 701 extends upward, and the push plate 702 pushes the transmission rod 703 and the impact rod 704 upward. The impact rod 704 is lifted up, and vertical force is applied to the two inclined arms of the same product. The small connection position between the gate and the product is broken due to the stress, and the product falls on the product output channel.
[0060] The piston rod of the impact cylinder 701 retracts, and the tightening block 602 retracts. At this time, the gate loses the limiting force of the tightening block 602, and the product falls vertically downward and lands on the gate output channel. At this point, the separation and collection of the product and the gate are completed.
[0061] The above description is an explanation of the utility model, not a limitation of the utility model. The scope of the utility model is defined by the claims. Any form of modification can be made within the protection scope of the utility model.
Claims
1. An impact gate flushing device for injection molded products, characterized in that: The machine comprises a frame (5), a positioning tool (6) is provided on the frame (5), and the product (1) to be processed is placed on the positioning tool (6). The side of the positioning tool (6) is movably provided with a tightening block (602), and during the reciprocating motion of the tightening block (602), it abuts against the tightening gate. An impact cylinder (701) is arranged below the positioning tool (6), and the impact cylinder (701) drives an impact rod (704), and the impact rod (704) hits the product to be processed (1).
2. The device for flushing out the impact gate of injection molded products according to claim 1, characterized in that: The positioning tool (6) comprises a positioning block body (603), a groove is formed on the positioning block body (603) to form a receiving space (604), and the product to be processed (1) is placed in the receiving space (604); the pressing block (602) reciprocates and extends into the receiving space (604) to abut against the product to be processed (1).
3. The device for flushing out the impact gate of injection molded products according to claim 2, characterized in that: Both ends of the through groove on the positioning block body (603) are open ends, and the groove width of the through groove is greater than the gate width and smaller than the width of the part to be processed.
4. The device for flushing out the impact gate of injection molded products according to claim 3, characterized in that: The side walls on both sides of the positioning block body (603) are matched with the outer contour shape of the product (1) to be processed.
5. The device for flushing out the impact gate of injection molded products according to claim 3, characterized in that: A recessed position is reserved on the positioning block body (603) to allow the tightening block (602) to pass through, and the tightening block (602) is concave on one side facing the gate, matching the shape of the gate.
6. The device for impact gate flushing of injection molded products according to claim 1, characterized in that: The movement path of the tightening block (602) and the movement path of the impact rod (704) are perpendicular to each other.
7. The device for flushing out the impact gate of injection molded products according to claim 1, characterized in that: An impact distance is reserved between the impact rod (704) and the product (1) to be processed in its initial state.
8. The device for impact gate removal of injection molded products according to claim 7, characterized in that: The axial length of the impact rod (704) is greater than the width of the product (1) to be processed in the same direction.
9. The device for impact gate removal of injection molded products according to claim 1, characterized in that: A push plate (702) is connected to the piston rod of the impact cylinder (701), one or more transmission rods (703) are arranged on the push plate (702), the transmission rods (703) penetrate the positioning tool (6), and the impact rod (704) is connected to the top of the transmission rod (703).
10. The device for impact gate removal of injection molded products according to claim 1, characterized in that: A product discharge channel (8) and a gate discharge channel (9) are led out from the positioning tool (6), and the product and the gate are stored separately.