Handle plastic piece blistering discharging device
By introducing buffer and vibration components into the thermoforming feeding device, the problem of uncontrolled falling speed of plastic parts was solved, stable control of the feeding process was achieved, the defect rate was reduced, and the quality of finished products was improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGZHOU HENGKE MOLDING TECHNOLOGY CO LTD
- Filing Date
- 2025-07-03
- Publication Date
- 2026-06-19
AI Technical Summary
The existing plastic handle blister feeding device lacks effective cushioning measures, which causes the plastic parts to fall out of control and easily collide with the belt conveyor, generating impact force, causing surface scratches and deformation, and increasing the defect rate.
A vacuum forming feeding device was designed, comprising a material blocking component, a buffer component, a vibration component, and a drive component. By using the elastic buffer structure of the buffer plate and spring, combined with the periodic vibration of the vibration component, the falling speed and distribution of the plastic parts are controlled to avoid accumulation and jamming.
It effectively reduces impact damage to plastic parts, lowers the defect rate, improves finished product quality, and ensures smooth transportation of plastic parts and finished product quality.
Smart Images
Figure CN224374851U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of vacuum forming feeding equipment technology, specifically a vacuum forming feeding device for handle plastic parts. Background Technology
[0002] Endoscopic minimally invasive instruments have plastic handles, and their processing precision, surface quality, and structural strength directly affect the instrument's operational flexibility, stability, and reliability in minimally invasive surgery. Substandard processing quality may lead to functional abnormalities during use, and even affect surgical safety and outcomes.
[0003] The processing technology of plastic handles for minimally invasive endoscopic instruments is diverse, and vacuum forming is one of the more common processes. Vacuum forming, as a plastic processing technology, mainly involves heating a flat sheet of rigid plastic until it softens, then using vacuum adsorption to adhere it to the surface of a mold. After cooling, it is formed and then transported by a vacuum forming unloading group. Its advantages are low mold cost, short production time, high production efficiency, and the ability to produce various irregular structures.
[0004] Currently, the blister forming and unloading components in existing plastic handle parts mainly consist of an unloading station support and a belt conveyor. The unloading station support serves as the basic structure of the entire unloading component, providing stable support for the belt conveyor. The belt conveyor uses a wear-resistant rubber conveyor belt and is driven by a motor to rotate the rollers, thus undertaking the task of conveying the formed plastic parts. During operation, it can steadily transport the blister-formed plastic handle parts to the subsequent processing or packaging stages at a stable speed.
[0005] However, when the vacuum-formed plastic handle falls onto the belt conveyor, it falls freely under gravity alone. Due to the lack of a buffer device to control the falling speed of the plastic part, it is difficult to control the falling speed under the combined effect of the material's own weight and falling inertia. If the material is too heavy or the falling speed is too fast, the impact force generated when it comes into contact with the belt conveyor can easily cause scratches and deformation on the surface of the plastic part. This not only significantly increases the defect rate of the product, but also affects the finished quality of the plastic handle of the endoscopic minimally invasive instrument. Therefore, it is necessary to provide a vacuum forming and unloading device for the plastic handle to solve the above problems.
[0006] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Utility Model Content
[0007] Based on the aforementioned problems in the existing technology, the problem to be solved by this application is to provide a plastic handle blister feeding device, which solves the problem that the existing device lacks effective buffering measures, resulting in the plastic handle falling out of the feeding station at an uncontrolled speed, colliding with the belt conveyor and generating impact force, which in turn causes surface scratches and deformation and increases the defect rate.
[0008] The technical solution adopted by this application to solve its technical problem is: a plastic handle blister feeding device, comprising:
[0009] A belt conveyor, the belt conveyor comprising two sets of supports;
[0010] A material blocking assembly is installed above the belt conveyor, the material blocking assembly including a material blocking cover installed on the support;
[0011] A buffer assembly is installed inside the baffle cover. The buffer assembly includes a buffer plate hinged inside the baffle cover. An assembly frame is installed inside the baffle cover. A plurality of springs are installed at one end of the assembly frame, and the other end of the assembly frame is connected to the buffer plate.
[0012] A vibration assembly is installed on both sides of the baffle. The vibration assembly includes a limiting sleeve installed on the baffle. A long rod is slidably arranged inside the limiting sleeve. The upper end of the long rod extends into the baffle and is fitted with a vibrating hemisphere. The upper part of the vibrating hemisphere is in close contact with the buffer plate.
[0013] A drive assembly, which is mounted on the bracket, serves as the power source for the vibration assembly.
[0014] Furthermore, the spring ensures that the buffer plate always maintains a downward motion tendency.
[0015] Furthermore, a limiting frame that can slide within the limiting sleeve is fixed on the long rod, which is suitable for limiting the radial sway of the long rod.
[0016] Furthermore, the baffle has a semi-enclosed shell structure.
[0017] Furthermore, the buffer plate is made of highly elastic rubber material.
[0018] Furthermore, a baffle plate is installed inside the baffle cover, and a discharge port is provided at the lower part of the baffle plate and above the belt conveyor.
[0019] Furthermore, a hopper is installed at one end of the baffle, and the upper end of the hopper is connected to the baffle.
[0020] The beneficial effects of this application are: the plastic handle part vacuum forming unloading device provided by this application, through the cooperation of the buffer plate hinged in the baffle and the spring on the lower assembly frame, forms an elastic buffer structure, which can effectively slow down the falling speed of the plastic part, reduce impact damage, thereby reducing the defect rate of the plastic handle part and improving its finished product quality.
[0021] In addition to the purposes, features, and advantages described above, this application has other purposes, features, and advantages. A further detailed description of this application will be provided below with reference to the figures. Attached Figure Description
[0022] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.
[0023] In the attached diagram:
[0024] Figure 1 This is a first perspective structural schematic diagram of a handle plastic part vacuum forming and feeding device according to an embodiment of this application;
[0025] Figure 2 for Figure 1 Enlarged view of the structure of region A in the middle;
[0026] Figure 3 This is an assembly diagram of the buffer assembly located within the baffle assembly according to an embodiment of this application;
[0027] Figure 4 This is a second perspective structural schematic diagram of a handle plastic part vacuum forming and feeding device according to an embodiment of this application;
[0028] Figure 5 This is a third perspective structural schematic diagram of a handle plastic part vacuum forming and feeding device according to an embodiment of this application;
[0029] Figure 6 This is a three-dimensional structural diagram of the buffer assembly, vibration assembly, and drive assembly according to embodiments of this application.
[0030] The following are the labeling elements in the figure:
[0031] 1. Base; 2. Belt conveyor; 21. Support frame; 3. Material blocking assembly; 31. Material blocking cover; 32. Material blocking plate; 33. Discharge port; 34. Feed hopper; 35. Support rod; 4. Buffer assembly; 41. Assembly frame; 42. Spring; 43. Buffer plate; 5. Vibration assembly; 51. Limit sleeve; 52. Long rod; 53. Limit frame; 54. Vibrating hemisphere; 55. Guide sleeve; 6. Drive assembly; 61. Rotating rod; 62. Driven gear; 63. Servo motor; 64. Main gear; 65. Cam; 66. Vibrating arc plate. Detailed Implementation
[0032] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.
[0033] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.
[0034] like Figure 1 As shown, this application provides a vacuum forming and unloading device for plastic handle parts, including a base 1. The base 1 is made of high-strength steel and has anti-slip texture (not shown) on the bottom to enhance the stability of the connection with the ground. A belt conveyor 2 is installed above the base 1. The belt conveyor 2 uses a wear-resistant and corrosion-resistant polyurethane conveyor belt, which can effectively support the plastic handle parts and reduce surface scratches during transportation. It can adapt to the transportation needs of various specifications of plastic parts. Supports 21 are symmetrically installed on both sides of the belt conveyor 2. The supports 21 are made of stainless steel and their lower ends are fastened to the base 1 by bolts to provide stable support for the belt conveyor 2.
[0035] like Figure 1 and Figure 5 As shown, a baffle assembly 3 is installed above the belt conveyor 2. The baffle assembly 3 is constructed entirely of aluminum alloy and mainly serves to guide the material flow, protect operational safety, and regulate the material discharge path. The baffle assembly 3 includes a baffle cover 31 bolted to the bracket 21. The baffle cover 31 has a semi-enclosed shell structure, which can effectively prevent the plastic handle from falling off due to vibration or deviation during the conveying process, providing a safe protective space for material transmission. A baffle plate 32 is bolted inside the baffle cover 31. The surface of the baffle plate 32 is designed according to the shape of the baffle cover 31 and its surface is smoothed. It can block and buffer the plastic handle, causing it to fall onto the belt conveyor 2, ensuring the smooth transmission of the plastic handle. A discharge port 33 is provided at the lower part of the baffle plate 32 and above the belt conveyor 2. The discharge port 33 guides the buffered plastic handle onto the belt conveyor 2.
[0036] A feeding hopper 34 is bolted to one end of the baffle 31. The upper end of the feeding hopper 34 is connected to the baffle 31. The feeding hopper 34 is located at the end of one end of the belt conveyor 2 and is used to guide the plastic handles transmitted on the belt conveyor 2 to fall smoothly into the external collection container. Two sets of support rods 35 are fixed on both sides of the baffle 31. The lower ends of the support rods 35 are welded to the base 1. The support rods 35 can evenly transmit the weight of the baffle assembly 3 and the impact force generated when the material falls to the base 1, thereby enhancing the structural stability of the entire equipment.
[0037] like Figure 3 and Figure 6 As shown, a buffer assembly 4 is installed inside the baffle 31. The buffer assembly 4 is used to mitigate the impact force generated when the plastic handle falls. It achieves deceleration protection of the material through elastic buffering. The buffer assembly 4 includes a buffer plate 43 hinged inside the baffle 31. The buffer plate 43 is made of highly elastic rubber material and can absorb impact energy through its own deformation. Its hinge end is connected with a wear-resistant bearing to ensure that the buffer plate 43 can swing up and down flexibly when subjected to force to adapt to the buffering needs of materials of different weights. An assembly frame 41 is installed inside the baffle 31 and below the buffer plate 43. The assembly frame 41 is a rectangular frame structure welded from aluminum alloy steel and is welded and fixed to the inner wall of the baffle 31.
[0038] Three springs 42 are welded and fixed to one end of the assembly frame 41. The springs 42 are made of carbon spring steel and are heat-treated to enhance their elasticity. One end of each spring is welded and fixed to the buffer plate 43, so that the buffer plate 43 always maintains a downward movement trend. When the plastic handle falls onto the surface of the buffer plate 43, the buffer plate 43 swings downward under the force of gravity and compresses the springs 42. The springs 42 convert the kinetic energy of the material into elastic potential energy through elastic deformation, thereby slowing down the falling speed of the plastic part. When the material slides off the buffer plate 43, the springs 42 release their potential energy and drive the buffer plate 43 to reset, preparing for the next buffering. The spaced arrangement of the three springs 42 can ensure that the buffer plate 43 is subjected to uniform force, reduce tilting or jamming caused by unilateral force, and effectively improve the stability of the buffer assembly 4 during operation.
[0039] like Figure 1 , Figure 2 , Figure 4 and Figure 6As shown, vibration components 5 are installed on both sides of the baffle 31. The vibration components 5 achieve the material feeding function through mechanical vibration to assist the buffer plate 43. It is used to reduce the accumulation of plastic handle parts on the buffer plate 43. The vibration components 5 include a limiting sleeve 51 welded and fixed to the baffle 31. A long rod 52 is slidably connected in the limiting sleeve 51. The long rod 52 is made of aluminum alloy and the surface is chrome-plated to enhance wear resistance. A limiting frame 53 that can slide in the limiting sleeve 51 is fixed on the long rod 52. The limiting frame 53 also slides in the limiting sleeve 51 during the reciprocating movement of the long rod 52. Its outer wall has multiple raised horizontal bars (not shown in the figure), and the limiting sleeve 51 also has long grooves (not shown in the figure) that are adapted to the multiple raised horizontal bars. Thus, the sliding auxiliary structure formed by the limiting sleeve 51 and the limiting frame 53 effectively restricts the radial sway of the long rod 52.
[0040] The upper end of the long rod 52 extends into the baffle 31 and is welded and fixed with a vibrating hemisphere 54. The upper part of the vibrating hemisphere 54 is tightly fitted with the buffer plate 43. Two sets of guide sleeves 55 are fixed on both sides of the bracket 21. The guide sleeves 55 are all fitted on the rod body of the long rod 52. When the long rod 52 moves back and forth in a linear motion under the action of power, it drives the vibrating hemisphere 54 to apply a periodic impact force to the buffer plate 43, causing the buffer plate 43 to vibrate slightly. This vibration can keep the plastic parts in a dynamic sliding state, effectively avoiding the accumulation problem caused by the material staying for too long. At the same time, the vibration can also make the distribution of the plastic parts on the buffer plate 43 more uniform, reducing the jamming phenomenon caused by local overload of the buffer plate 43.
[0041] like Figure 4 and Figure 6 As shown, a drive assembly 6 is installed on an adjacent side of the two side supports 21. The drive assembly 6 is the power source of the vibration assembly 5. The vibration frequency of the buffer plate 43 is controllably adjusted through transmission. The drive assembly 6 includes a rotating rod 61 rotatably connected to the support 21. The two ends of the rotating rod 61 are connected to the support 21 through deep groove ball bearings. The bearing seats are fixed to the inside of the support 21 with bolts. A driven gear 62 is installed on one side of the rotating rod 61. The driven gear 62 is connected to the rotating rod 61 through a flat key.
[0042] A servo motor 63 is mounted on one side bracket 21. The servo motor 63 is a low-inertia AC servo motor, equipped with an encoder to realize closed-loop speed control. The output end of the servo motor 63 is coaxially mounted with a main gear 64 that meshes with the driven gear 62. The transmission ratio between the main gear 64 and the driven gear 62 is 1:1. The two ends of the rotating rod 61 pass through a single bracket 21 and are equipped with cams 65. The profile curve is designed as an Archimedean spiral according to the stroke requirements of the vibration component 5 to ensure that the lifting and lowering movement of the long rod 52 is smooth and without impact.
[0043] The lower end of the long rod 52 is fixed with a vibration arc plate 66 adapted to the cam 65. The vibration arc plate 66 is forged from 45# steel. When the servo motor 63 is powered on to drive the main gear 64 to rotate, the gear 62 drives the rotating rod 61 to rotate synchronously, and the cams 65 at both ends rotate accordingly. Through the curved surface contact with the vibration arc plate 66, the circular motion of the rotating rod 61 is converted into the reciprocating linear motion of the long rod 52, which in turn drives the vibration hemisphere 54 to apply periodic vibration to the buffer plate 43, thereby realizing the dynamic control of the plastic part feeding process.
[0044] Working principle: When processing the plastic handle of the endoscopic minimally invasive instrument, it is processed by vacuum forming. The main principle is to heat the flat plastic sheet until it softens, and then vacuum adsorb it onto the surface of the mold. After cooling, it is formed. When the formed plastic handle falls onto the surface of the buffer plate 43, the buffer plate 43 swings downward under the action of the material's gravity, which drives the spring 42 welded to it to compress. The spring 42 absorbs the kinetic energy of the falling material through elastic deformation and converts it into elastic potential energy, thereby slowing down the falling speed of the plastic part. After the material slides away from the buffer plate 43, the spring 42 releases the stored potential energy, which drives the buffer plate 43 to reset, ready to receive the next material.
[0045] Meanwhile, the servo motor 63 in the drive assembly 6 drives the main gear 64 to rotate through an external power supply and a corresponding controller. At this time, the main gear 64 meshes with the driven gear 62, driving the rotating rod 61 to rotate at a constant speed. As the rotating rod 61 rotates, the cam 65 at both ends of the cam 65 continuously contacts the vibrating arc plate 66 with its curved surface profile, converting the circular motion into the reciprocating linear motion of the long rod 52. The vibrating hemisphere 54 at the upper end of the long rod 52 thus applies a periodic impact force to the bottom surface of the buffer plate 43, causing the buffer plate 43 to generate a micro-amplitude vibration with an adjustable frequency.
[0046] The vibration can effectively promote the material to slide down the surface of the buffer plate 43 at a stable speed, avoiding material blockage caused by accumulation. At the same time, the slight shaking generated by the vibration can prevent material accumulation on the surface of the buffer plate 43, and will not cause secondary collisions to the material, thus improving product quality.
[0047] Finally, the drive assembly 6 can precisely control the rotation frequency of the cam 65 by adjusting the speed of the servo motor 63, thereby adapting to plastic parts of different specifications. For example, for heavy handle plastic parts, the speed of the servo motor 63 can be increased to enhance the vibration amplitude and ensure that the material slides down smoothly. For lightweight plastic parts, the speed can be reduced to avoid excessive vibration that could cause the material to bounce.
[0048] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A vacuum forming and unloading device for plastic handle parts, characterized in that: include: A belt conveyor (2), the belt conveyor (2) comprising two sets of supports (21); A material blocking assembly (3) is installed above the belt conveyor (2), the material blocking assembly (3) including a material blocking cover (31) installed on the bracket (21); A buffer assembly (4) is installed inside the baffle (31). The buffer assembly (4) includes a buffer plate (43) hinged inside the baffle (31). An assembly frame (41) is installed inside the baffle (31). A plurality of springs (42) are installed at one end of the assembly frame (41), and one end of the springs is connected to the buffer plate (43). A vibration assembly (5) is installed on both sides of the baffle (31). The vibration assembly (5) includes a limiting sleeve (51) installed on the baffle (31). A long rod (52) is slidably arranged inside the limiting sleeve (51). The upper end of the long rod (52) extends into the baffle (31) and is fitted with a vibration hemisphere (54). The upper part of the vibration hemisphere (54) is tightly fitted with the buffer plate (43). A drive assembly (6) is mounted on the bracket (21), and the drive assembly (6) is the power source of the vibration assembly (5).
2. The plastic handle forming and unloading device according to claim 1, characterized in that: The spring (42) keeps the buffer plate (43) moving downwards at all times.
3. The plastic handle forming and unloading device according to claim 1, characterized in that: A limiting frame (53) that can slide within the limiting sleeve (51) is fixed on the long rod (52), which is suitable for limiting the radial sway of the long rod (52).
4. The handle plastic part vacuum forming and unloading device according to claim 1, characterized in that: The baffle (31) has a semi-enclosed shell structure.
5. The plastic handle forming and unloading device according to claim 1, characterized in that: The buffer plate (43) is made of highly elastic rubber material.
6. The plastic handle forming and unloading device according to claim 1, characterized in that: A baffle plate (32) is installed inside the baffle cover (31), and a discharge port (33) is provided at the lower part of the baffle plate (32) and above the belt conveyor (2).
7. The plastic handle forming and unloading device according to claim 1, characterized in that: A feeding hopper (34) is installed at one end of the baffle (31), and the upper end of the feeding hopper (34) is connected to the baffle (31).