A trimming device for injection molding of plastic products
By linking components such as the gear disc, inner sleeve, and drive cylinder, multi-angle fixing and all-round trimming of plastic products are achieved, solving the problems of unstable fixing and low trimming efficiency of existing equipment, improving trimming accuracy and efficiency, and reducing manual intervention.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHONGQING JLL HARDWARE CO LTD
- Filing Date
- 2025-08-14
- Publication Date
- 2026-07-14
AI Technical Summary
Existing trimming equipment in plastic product processing suffers from problems such as poor fixing effect, difficulty in adapting to different sizes and shapes, limited trimming angle, low efficiency, and high degree of manual intervention.
The device employs components such as a gear disc, inner sleeve, outer sleeve, drive cylinder, and trimming motor to achieve multi-angle fixing and trimming of plastic products. Through the radial expansion of the inner support plate and the axial clamping of the fixing disc, combined with the drive of the motor and cylinder, all-round trimming is achieved.
It improves the trimming accuracy and efficiency of plastic products, reduces the intensity of manual operation, adapts to plastic products of different sizes and shapes, and ensures the stability of trimming quality.
Smart Images
Figure CN224489810U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of plastic product processing equipment, specifically a trimming device for injection molding of plastic products. Background Technology
[0002] After injection molding, plastic products often have burrs, flash, and other excess parts on their edges. These excess parts need to be trimmed to become qualified products.
[0003] Currently, existing trimming equipment has the following shortcomings: poor fixing effect, plastic products are prone to shaking during trimming, affecting trimming accuracy; it cannot adapt to plastic products of different sizes and shapes, resulting in poor versatility; the trimming angle is limited, making it difficult to trim plastic products comprehensively, requiring multiple adjustments, which is inefficient; it requires high manual intervention, resulting in high labor intensity and unstable trimming quality. Therefore, those skilled in the art have proposed a trimming device for injection molding of plastic products to solve the problems mentioned above. Utility Model Content
[0004] The purpose of this invention is to provide a trimming device for injection molding of plastic products to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A trimming device for injection molding of plastic products includes a support platform, a first support plate, and a second support plate. The first and second support plates are both fixedly connected to the top surface of the support platform. A fixing component and a trimming component are connected to the first and second support plates. The fixing component is used to clamp and rotate the plastic product. The trimming component is linked with the fixing component to trim the outer edge of the plastic product at multiple angles.
[0007] As a further embodiment of this utility model: the fixing assembly includes a gear disk, an inner sleeve, an outer sleeve, a drive cylinder, a mounting plate, a scissor telescopic component, and an inner support plate. The gear disk is rotatably connected to the side opposite to the first support plate and the second support plate. The inner sleeve is fixedly connected to the front side of the gear disk, and the outer sleeve is slidably connected to the outside of the inner sleeve. The drive cylinder is fixedly connected to the rear side of the gear disk. The front end of the piston rod of the drive cylinder passes through the inside of the gear disk and the inner sleeve and is fixedly connected to the front wall of the inner sleeve. Several sets of mounting plates evenly distributed in a circumferential array are fixedly connected to the outer walls of both the inner sleeve and the outer sleeve. Scissor telescopic components are rotatably connected between the mounting plates on the same side. The other end of each scissor telescopic component is rotatably connected to the inner support plate.
[0008] As a further embodiment of this utility model: the fixing component also includes an adjusting screw, an adjusting handle, a fixing plate and an anti-slip pad. The adjusting screw is threadedly connected to the second support plate. Both ends of the adjusting screw pass through the second support plate. The end closer to the first support plate is rotatably connected to the fixing plate. The anti-slip pad is fixedly connected to the fixing plate. The end away from the support plate is fixedly connected to the adjusting handle.
[0009] As a further embodiment of this utility model: the fixing component also includes a rotating motor and a rotating gear. The rotating motor is fixedly connected to the side of the first support plate. The output shaft of the rotating motor passes through the first support plate and is fixedly connected to the rotating gear. The rotating gear meshes with the gear disk.
[0010] As a further embodiment of this utility model: the trimming assembly includes a trimming motor, a trimming screw, a trimming screw block, a mounting plate, a trimming cylinder, and trimming shears. The trimming motor is fixedly connected to the side of the first support plate, and the output shaft of the trimming motor is fixedly connected to the trimming screw. The other end of the trimming screw passes through the first support plate and is rotatably connected to the inner side of the second support plate. The trimming screw is threadedly connected to the trimming screw, and the top surface of the trimming screw block is fixedly connected to the mounting plate. The trimming cylinder is fixedly connected to the mounting plate, and the piston rod end of the trimming cylinder passes through the mounting plate and is fixedly connected to the trimming shears.
[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This device achieves bidirectional fixation of plastic products by combining the radial expansion of the inner support plate and the axial clamping of the fixing plate, effectively preventing shaking during the trimming process; the expansion range of the inner support plate can be adjusted by the drive cylinder, and the position of the fixing plate can be adjusted in conjunction with the adjusting screw to adapt to plastic products of different sizes and shapes; the fixing component can drive the plastic product to rotate, while the trimming component can move along a direction parallel to the product axis, and the trimmer can extend and retract radially for all-round trimming; this device is driven by a motor and cylinder, reducing manual operation, lowering labor intensity, and improving trimming efficiency and quality stability. Attached Figure Description
[0012] Figure 1 This is a top view of a trimming device used in the injection molding process of plastic products.
[0013] Figure 2 This is a side view of the first support plate in a trimming device for injection molding of plastic products.
[0014] Figure 3 This is a cross-sectional view of the outer sleeve in a trimming device used for injection molding of plastic products.
[0015] In the diagram: 1. Support platform; 2. First support plate; 3. Second support plate; 4. Fixing assembly; 401. Gear disk; 402. Inner sleeve; 403. Outer sleeve; 404. Drive cylinder; 405. Mounting plate; 406. Scissor lift telescopic component; 407. Inner support plate; 408. Adjusting screw; 409. Adjusting crank; 410. Fixing plate; 411. Anti-slip pad; 412. Rotating motor; 413. Rotating gear; 5. Trimming assembly; 501. Trimming motor; 502. Trimming screw; 503. Trimming screw block; 504. Mounting vertical plate; 505. Trimming cylinder; 506. Trimming shears. Detailed Implementation
[0016] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0017] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0019] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0020] Example 1
[0021] Please see Figure 1-3A trimming device for injection molding of plastic products includes a support platform 1, a first support plate 2, and a second support plate 3. The first support plate 2 and the second support plate 3 are both fixedly connected to the top surface of the support platform 1. A fixing component 4 and a trimming component 5 are connected to the first support plate 2 and the second support plate 3. The fixing component 4 is used to clamp and rotate the plastic product. The trimming component 5 is linked with the fixing component 4 to trim the outer edge of the plastic product at multiple angles.
[0022] The fixing assembly 4 includes a gear disk 401, an inner sleeve 402, an outer sleeve 403, a drive cylinder 404, a mounting plate 405, a scissor telescopic member 406, and an inner support plate 407. The gear disk 401 is rotatably connected to the side opposite to the first support plate 2 and the second support plate 3. The inner sleeve 402 is fixedly connected to the front side of the gear disk 401. The outer sleeve 403 is slidably connected to the outside of the inner sleeve 402. The drive cylinder 404 is fixedly connected to the rear side of the gear disk 401. The front end of the piston rod of the drive cylinder 404 passes through the inside of the gear disk 401 and the inner sleeve 402 and is fixedly connected to the front wall of the inner wall of the outer sleeve 403. Several sets of mounting plates 405 are evenly distributed in a circumferential array on the outer walls of both the inner sleeve 402 and the outer sleeve 403. Scissor telescopic members 406 are rotatably connected between the mounting plates 405 on the same side. The other end of each scissor telescopic member 406 is rotatably connected to the inner support plate 407.
[0023] The fixing assembly 4 also includes an adjusting screw 408, an adjusting handle 409, a fixing plate 410, and an anti-slip pad 411. The adjusting screw 408 is threaded onto the second support plate 3. Both ends of the adjusting screw 408 pass through the second support plate 3. The end closer to the first support plate 2 is rotatably connected to the fixing plate 410. The anti-slip pad 411 is fixedly connected to the fixing plate 410. The end away from the support plate is fixedly connected to the adjusting handle 409.
[0024] The fixing component 4 also includes a rotating motor 412 and a rotating gear 413. The rotating motor 412 is fixedly connected to the side of the first support plate 2. The output shaft of the rotating motor 412 passes through the first support plate 2 and is fixedly connected to the rotating gear 413. The rotating gear 413 meshes with the gear disk 401.
[0025] During pre-positioning, rotating the adjusting handle 409 drives the adjusting screw 408 to rotate, causing the fixing plate 410 to move along the axis to accommodate products of different lengths. During the fixing stage, the piston rod of the drive cylinder 404 pushes the outer sleeve 403 to slide along the inner sleeve 402, causing the circumferentially distributed scissor telescopic parts 406 to unfold, converting the axial movement into the radial expansion of the inner support plate 407, thus clamping the product from the inside; at the same time, the fixing plate 410 applies axial clamping force, and the anti-slip pad 411 enhances friction and prevents damage, forming a two-way stable clamping. During rotation, the rotating motor 412 drives the gear disk 401 through gear meshing, causing the inner sleeve 402, the outer sleeve 403, and the clamped product to rotate synchronously.
[0026] Example 2
[0027] This embodiment adds the following improvements to Embodiment 1: The trimming assembly 5 includes a trimming motor 501, a trimming screw 502, a trimming screw block 503, a mounting plate 504, a trimming cylinder 505, and trimming shears 506. The trimming motor 501 is fixedly connected to the side of the first support plate 2. The output shaft of the trimming motor 501 is fixedly connected to the trimming screw 502. The other end of the trimming screw 502 passes through the first support plate 2 and is rotatably connected to the inner side of the second support plate 3. The trimming screw block 503 is threaded onto the trimming screw 502. The mounting plate 504 is fixedly connected to the top surface of the trimming screw block 503. The trimming cylinder 505 is fixedly connected to the mounting plate 504. The piston rod end of the trimming cylinder 505 passes through the mounting plate 504 and is fixedly connected to the trimming shears 506.
[0028] The rotating motor 412 is started, which drives the gear disk 401 to rotate through the rotating gear 413, thereby causing the fixed plastic product to rotate synchronously; the trimming motor 501 is started, which drives the trimming screw 502 to rotate, causing the trimming screw block 503 to drive the mounting vertical plate 504 to move back and forth along the axial direction, adjusting the axial position of the trimming shears 506; the trimming cylinder 505 is started, which pushes the trimming shears 506 to move radially until it contacts the edge of the product, trimming the rotating product; by adjusting the axial position and radial feed of the trimming shears 506, the overall trimming of different parts of the product can be completed.
[0029] Working principle
[0030] During pre-positioning, rotating the adjusting handle 409 drives the adjusting screw 408 to rotate, causing the fixing plate 410 to move along the axis to accommodate products of different lengths. During the fixing stage, the piston rod of the drive cylinder 404 pushes the outer sleeve 403 to slide along the inner sleeve 402, causing the circumferentially distributed scissor telescopic parts 406 to unfold, converting the axial movement into the radial expansion of the inner support plate 407, thus clamping the product from the inside; at the same time, the fixing plate 410 applies axial clamping force, and the anti-slip pad 411 enhances friction and prevents damage, forming a two-way stable clamping. During rotation, the rotating motor 412 drives the gear disk 401 through gear meshing, causing the inner sleeve 402, the outer sleeve 403, and the clamped product to rotate synchronously.
[0031] The rotating motor 412 is started, which drives the gear disk 401 to rotate through the rotating gear 413, thereby causing the fixed plastic product to rotate synchronously; the trimming motor 501 is started, which drives the trimming screw 502 to rotate, causing the trimming screw block 503 to drive the mounting vertical plate 504 to move back and forth along the axial direction, adjusting the axial position of the trimming shears 506; the trimming cylinder 505 is started, which pushes the trimming shears 506 to move radially until it contacts the edge of the product, trimming the rotating product; by adjusting the axial position and radial feed of the trimming shears 506, the overall trimming of different parts of the product can be completed.
[0032] After trimming, the trimming cylinder 505 retracts, causing the trimming scissors 506 to reset; the drive cylinder 404 retracts, causing the scissor telescopic component 406 to retract, and the inner support plate 407 to release the product; the trimmed product can be removed by rotating the adjusting handle 409 in the opposite direction.
[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0034] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A trimming device for injection molding of plastic products, characterized in that, It includes a support platform, a first support plate and a second support plate. The first support plate and the second support plate are both fixedly connected to the top surface of the support platform. A fixing component and a trimming component are connected to the first support plate and the second support plate. The fixing component is used to clamp and rotate the plastic product. The trimming component is linked with the fixing component to trim the outer edge of the plastic product at multiple angles.
2. The trimming equipment for injection molding of plastic products according to claim 1, characterized in that, The fixing assembly includes a gear disk, an inner sleeve, an outer sleeve, a drive cylinder, a mounting plate, a scissor telescopic component, and an inner support plate. The gear disk is rotatably connected to one side of the first support plate and the second support plate, the inner sleeve is fixedly connected to the front side of the gear disk, the outer sleeve is slidably connected to the outside of the inner sleeve, the drive cylinder is fixedly connected to the rear side of the gear disk, the piston rod of the drive cylinder passes through the inside of the gear disk and the inner sleeve and is fixedly connected to the front wall of the inner sleeve, and several sets of mounting plates evenly distributed in a circumferential array are fixedly connected to the outer walls of the inner sleeve and the outer sleeve. Scissor telescopic components are rotatably connected between the mounting plates on the same side, and the other end of each scissor telescopic component is rotatably connected to the inner support plate.
3. The trimming equipment for injection molding of plastic products according to claim 2, characterized in that, The fixing assembly also includes an adjusting screw, an adjusting handle, a fixing plate, and an anti-slip pad. The adjusting screw is threadedly connected to the second support plate, and both ends of the adjusting screw pass through the second support plate. The end closer to the first support plate is rotatably connected to the fixing plate, and the anti-slip pad is fixedly connected to the fixing plate. The end away from the support plate is fixedly connected to the adjusting handle.
4. The trimming equipment for injection molding of plastic products according to claim 3, characterized in that, The fixing assembly also includes a rotating motor and a rotating gear. The rotating motor is fixedly connected to the side of the first support plate. The output shaft of the rotating motor passes through the first support plate and is fixedly connected to the rotating gear. The rotating gear meshes with a gear disk.
5. The trimming equipment for injection molding of plastic products according to claim 1, characterized in that, The trimming assembly includes a trimming motor, a trimming screw, a trimming screw block, a mounting plate, a trimming cylinder, and trimming shears. The trimming motor is fixedly connected to the side of the first support plate, and the output shaft of the trimming motor is fixedly connected to the trimming screw. The other end of the trimming screw passes through the first support plate and is rotatably connected to the inner side of the second support plate. A trimming screw block is threaded onto the trimming screw, and a mounting plate is fixedly connected to the top surface of the trimming screw block. A trimming cylinder is fixedly connected to the mounting plate, and the piston rod end of the trimming cylinder passes through the mounting plate and is fixedly connected to the trimming shears.