A multi-station automatic gate shearing device

Abstract

This utility model relates to the technical field of injection molding machine auxiliary devices, and discloses a multi-station automatic gate shearing device, including an injection molding device, a gripping robotic arm, and a shearing device. The shearing device includes multiple pneumatic shears for synchronously shearing injection molding screw gates. The shearing device is equipped with auxiliary components, which have a support structure for supporting the injection molding screws gripped by the suction cups of the gripping robotic arm during the shearing process. This utility model, by placing the auxiliary components on the outer shell of the shearing device, adapting the inclined mating surface of the support block to the screw ring structure, and using a spring between the moving plate and the fixed shell to provide elastic support, combined with the guide rod and the spring limit at the mounting end, and by fixing the compression spring with an upper pressure and lower push, and by using the support block to hold the screw, can supplement the support force to offset the lateral shearing force and avoid displacement, thus ensuring that the injection molding screw has good stability during gate shearing.

Description

Technical Field

[0001] This utility model relates to the technical field of injection molding machine auxiliary devices, and in particular to a multi-station automatic gate shearing device. Background Technology

[0002] Screws, as a common connecting and fastening component, are widely used in many fields such as electronics, machinery, and construction. They play a key role in the stability of product structure and the reliability of assembly. With the continuous improvement of the functional and adaptability requirements of industrial production for parts, a special type of screw has emerged. Through injection molding, a ring structure screw head is formed at one end of the screw and is fixedly connected to the screw body to meet the needs of specific assembly or usage scenarios.

[0003] After injection molding, the gates formed during the injection process of these screws with ring structures need to be cut to obtain the final qualified product. Currently, the industry commonly uses pneumatic shears for gate cutting. Since the injection molding process often involves molding multiple screws at once, pneumatic shears are now used for automatic gate cutting on the screws to improve production efficiency.

[0004] In actual production, a robotic arm with a suction cup usually picks up the injection-molded screws and moves them to the shearing device for gate shearing. However, when the screws are fixed by the suction force of the robotic arm's suction cups, the screws are very prone to positional displacement or shaking when the pneumatic shears apply shearing force to the gate. This will directly lead to uneven gate shearing surface, and may even damage the screw body or the ring structure at the end, seriously affecting the product yield and subsequent assembly reliability. Utility Model Content

[0005] This invention addresses the shortcomings of existing technologies by providing a multi-station automatic gate shearing device. By optimizing the auxiliary support structure and the collaborative design of multi-station shearing, it achieves stable support for injection screws, ensuring the quality of gate shearing, while simplifying the device structure to adapt to the needs of mass production.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A multi-station automatic gate shearing device includes an injection molding device, a gripping robotic arm, and a shearing device. The shearing device includes multiple pneumatic shears for synchronously shearing injection molding screw gates. The shearing device is equipped with an auxiliary component, which has a support structure for supporting the injection molding screws gripped by the suction cups of the gripping robotic arm during the shearing process.

[0007] Preferably, the shearing device further includes a housing, the pneumatic shear is mounted on the housing, the auxiliary component includes a fixed housing, the auxiliary component includes a movable plate, and the support structure is a support block mounted on the movable plate.

[0008] Preferably, the fixed housing is provided with a fixing block and is fixedly installed on the outer shell by the fixing block, the movable plate is movably disposed on the fixed housing, and a spring is provided between the movable plate and the fixed housing, the spring providing elastic support force for the support block.

[0009] Preferably, both ends of the fixed housing are provided with limiting rods arranged in the vertical direction, and both ends of the movable plate are provided with limiting holes. The movable plate is sleeved on the limiting rods through the limiting holes and slides along the limiting rods.

[0010] Preferably, the movable plate has multiple mounting ends 1 on the side facing the fixed housing, and the fixed housing has multiple mounting ends 2 on the side facing the movable plate. The upper end of the spring is embedded in the mounting end 1, and the lower end of the spring is embedded in the mounting end 2.

[0011] Preferably, the support block has a through hole through which the injection molding screw body passes, and the inner diameter of the through hole is slightly larger than the outer diameter of the screw body to avoid the screw body.

[0012] Preferably, a mating surface is provided at the upper edge of the through hole, the mating surface is inclined, and the mating surface can fit against the lower surface of the screw head.

[0013] Preferably, the fixed housing is provided with two blocking parts, which are located on the upper sides of the moving plate to limit the upward movement of the moving plate and prevent the moving plate from disengaging from the limiting rod.

[0014] Preferably, the plurality of the support blocks are arranged at equal intervals on the moving plate, and the number of support blocks corresponds one-to-one with the number of pneumatic shears.

[0015] Preferably, both mounting end one and mounting end two are recessed groove structures, and the inner diameter of the groove is adapted to the outer diameter of the spring, thereby ensuring the stability of the spring after assembly.

[0016] Compared with the prior art, the present invention has the following beneficial effects: This utility model incorporates auxiliary components within the shearing device housing. The inclined mating surface of the support block is adapted to the screw ring structure. A spring between the moving plate and the fixed housing provides elastic support. The limiting rod guides and the spring at the mounting end provides limiting. By fixing the compression spring with an upward pressing and downward pushing action, and by using the support block to hold the screw in place, the supporting force can be supplemented to offset the lateral shearing force and prevent displacement. This ensures that the injection-molded screw has good stability during gate shearing. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a view showing the position of the auxiliary component of this utility model on the shearing mechanism; Figure 3 This is a structural view of the auxiliary components and shearing mechanism of this utility model; Figure 4 This is an exploded view of the auxiliary component structure of this utility model.

[0019] Drawing number explanation: 1. Injection molding device; 2. Gripping robotic arm; 3. Unloading device; 4. Shearing device; 41. Outer shell; 42. Pneumatic shear; 5. Auxiliary parts; 51. Fixed shell; 511. Mounting end one; 512. Fixing block; 513. Blocking part; 521. Mounting end two; 522. Limiting hole; 52. Moving plate; 53. Support block; 531. Mating surface; 54. Spring; 55. Limiting rod. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings.

[0021] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious modifications will be apparent to those skilled in the art. The basic principles of the present invention defined in the following description can be used in other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0022] Those skilled in the art should understand that in the disclosure of this utility model, the terms "longitudinal", "lateral", "up", "down", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or position based on the orientation or positional relationship shown in the accompanying drawings. They are only for the purpose of simplifying the description of this utility model and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this utility model.

[0023] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number. Example

[0024] Please see Figure 1-4 A multi-station automatic gate shearing device includes an injection molding device 1, a gripping robotic arm 2, and a shearing device 4. The shearing device 4 includes multiple pneumatic shears 42 for synchronously shearing injection molding screw gates. The shearing device 4 is equipped with an auxiliary component 5, which has a support structure for supporting the injection molding screws gripped by the suction cups of the gripping robotic arm 2 during the shearing process. It also has a feeding device 3. The shearing device 4 can be installed on the feeding device 3. After the gate shearing is completed, the screws are directly moved to the feeding point for screw feeding.

[0025] The shearing device 4 also includes an outer shell 41, a pneumatic shear 42 disposed on the outer shell 41, an auxiliary component 5 including a fixed shell 51, an auxiliary component 5 including a movable plate 52, and a support structure consisting of a support block 53 disposed on the movable plate 52.

[0026] The fixed housing 51 is provided with a fixing block 512 and is fixedly installed on the outer housing 41 through the fixing block 512. The movable plate 52 is movably disposed on the fixed housing 51. A spring 54 is provided between the movable plate 52 and the fixed housing 51. The spring 54 provides elastic support force for the support block 53. Both ends of the fixed housing 51 are provided with a limiting rod 55 arranged in the vertical direction. The two ends of the movable plate 52 are respectively provided with limiting holes 522. The movable plate 52 is sleeved on the limiting rod 55 through the limiting holes 522 and slides along the limiting rod 55.

[0027] The movable plate 52 has multiple mounting ends 511 on the side facing the fixed housing 51, and the fixed housing 51 has multiple mounting ends 521 on the side facing the movable plate 52. The upper end of the spring 54 is embedded in the mounting end 511, and the lower end of the spring 54 is embedded in the mounting end 521. Both the mounting end 511 and the mounting end 521 are recessed groove structures, and the inner diameter of the groove is adapted to the outer diameter of the spring 54. The mounting ends 511 and the mounting ends 521 ensure the stability of the spring 54 after assembly.

[0028] The support block 53 has a through hole through which the injection molding screw body passes. The inner diameter of the through hole is slightly larger than the outer diameter of the screw body to avoid the screw body. A mating surface 531 is provided at the upper edge of the through hole. The mating surface 531 is inclined and can fit with the lower surface of the screw head.

[0029] The fixed housing 51 is provided with two blocking parts 513. The two blocking parts 513 are located on the upper sides of the moving plate 52 respectively, limiting the upward movement of the moving plate 52 and preventing the moving plate 52 from disengaging from the limiting rod 55.

[0030] Multiple support blocks 53 are arranged at equal intervals on the moving plate 52, and the number of support blocks 53 corresponds one-to-one with the number of pneumatic shears 42.

[0031] In use, the injection molding device 1 completes the injection molding of multiple screws with ring structures according to a preset process. The ring at the end of the screw is firmly bonded to the pre-treated screw end through molten plastic. The gripping robotic arm 2 is activated, and its suction cup is aligned with the non-ring end surface of the screw. Multiple screws are gripped simultaneously through negative pressure adsorption and moved directly above the shearing device 4. The gripping robotic arm 2 drives the screw to move precisely, so that the gate of each screw is aligned with the shear gap of the corresponding pneumatic shear 42. At the same time, the axis of the screw body is aligned with the through hole axis of the support block 53, completing the positioning before shearing. The gripping robotic arm 2 drives the screw to move vertically downward. The screw body first passes through the through hole of the support block 53 until the lower surface of the ring structure at the end of the screw contacts the mating surface 531 of the support block 53. When moving downward, the ring structure applies downward pressure to the support block 53 through the mating surface 531, pushing the moving plate 52 to slide vertically downward along the limiting rod 55, simultaneously compressing the moving plate 52 and the fixed housing. When the gripping robotic arm 2 moves down to the preset position and its gate is completely inserted between the shears of the pneumatic shear 42, the downward movement of the spring 54 stops. At this time, the spring 54 is in a compressed state, and the upward elastic counter-force generated by it is transmitted to the ring structure through the moving plate 52 and the support block 53, pressing the screw upward against the suction cup of the gripping robotic arm 2, forming a double fixation of upper pressure and lower push. The pneumatic shear 42 starts synchronously, and multiple shears cut the corresponding gate. During the cutting process, the counter-force of the spring 54 continuously counteracts the lateral cutting force, preventing the screw from shifting or shaking. After the gate is cut, the shears of the pneumatic shear 42 reset. The gripping robotic arm 2 drives the screw to move vertically upward, releasing the pressure on the support block 53. The moving plate 52 moves upward along the limit rod 55 under the elastic force of the spring 54 until it contacts and resets with the blocking part 513. The gripping robotic arm 2 drives the cut screw to the unloading device 3. The suction cup releases the negative pressure to complete the unloading, and the device enters the next round of operation cycle.

[0032] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations or modifications.

Claims

1. A multi-station automatic sprue shearing apparatus, characterized by comprising: It includes an injection molding device (1), a gripping robotic arm (2) and a shearing device (4). The shearing device (4) includes multiple pneumatic shears (42) for synchronously shearing the injection screw gate. The shearing device (4) is provided with an auxiliary component (5). The auxiliary component (5) is provided with a support structure for supporting the injection screw gripped by the suction cup of the gripping robotic arm (2) during the shearing process.

2. A multi-station automatic sprue shearing apparatus according to claim 1, characterized in that: The shearing device (4) also includes an outer shell (41), the pneumatic shear (42) is mounted on the outer shell (41), the auxiliary component (5) includes a fixed shell (51), the auxiliary component (5) includes a movable plate (52), and the support structure is a support block (53) mounted on the movable plate (52).

3. A multi-station automatic sprue shearing apparatus according to claim 2, characterized in that: The fixed housing (51) is provided with a fixing block (512) and is fixedly installed on the outer shell (41) through the fixing block (512). The movable plate (52) is movably disposed on the fixed housing (51), and a spring (54) is provided between the movable plate (52) and the fixed housing (51).

4. A multi-station automatic sprue shearing apparatus according to claim 3, characterized in that: Both ends of the fixed housing (51) are provided with limiting rods (55) arranged in the vertical direction. The two ends of the movable plate (52) are respectively provided with limiting holes (522). The movable plate (52) is sleeved on the limiting rod (55) through the limiting hole (522) and slides along the limiting rod (55).

5. A multi-station automatic sprue shearing apparatus according to claim 4, characterized in that: The movable plate (52) has multiple mounting ends (511) on the side facing the fixed housing (51), and the fixed housing (51) has multiple mounting ends (521) on the side facing the movable plate (52). The upper end of the spring (54) is embedded in the mounting end (511), and the lower end of the spring (54) is embedded in the mounting end (521).

6. A multi-station automatic sprue shearing apparatus according to claim 5, wherein: The support block (53) has a through hole through which the injection screw body passes.

7. A multi-station automatic sprue shearing apparatus according to claim 6, characterized in that: A mating surface (531) is provided at the upper edge of the through hole, and the mating surface (531) is inclined.

8. A multi-station automatic sprue shearing apparatus according to claim 7, characterized in that: The fixed housing (51) is provided with two blocking parts (513), which are located on both sides above the moving plate (52) to limit the upward movement of the moving plate (52).

9. A multi-station automatic sprue cutter according to claim 8, characterized in that: Multiple support blocks (53) are arranged at equal intervals on the moving plate (52), and the number of support blocks (53) corresponds one-to-one with the number of pneumatic shears (42).

10. A multi-station automatic sprue shearing apparatus according to claim 9, characterized in that: Both mounting end one (511) and mounting end two (521) are recessed groove structures, and the inner diameter of the groove is adapted to the outer diameter of the spring (54).

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