Transfer trolley for plastic part production
By designing sleeve rods, chamfered rods, and positioning seal rings, and combining improvements to threaded rotating rods and traveling wheel sets, the problem of insufficient structural stability in the transfer of high-precision, multi-specification plastic parts in existing transfer equipment has been solved, achieving stable clamping and low-resistance transfer.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUZHOU LUOYUAN DEMIT PLASTIC PRODUCTS CO LTD
- Filing Date
- 2025-08-12
- Publication Date
- 2026-05-19
AI Technical Summary
Existing transfer equipment is unable to meet the stable transfer requirements of high-precision, multi-specification plastic parts, has poor structural stability, and is prone to loosening after long-term use.
The design employs a sleeve rod, chamfered rod, and positioning seal ring. Combined with the helical drive of the threaded rotating rod and the rigid contact of the inner and outer chamfered rods, it achieves stable clamping of plastic parts of different specifications through sliding adjustment, angle adaptation, and threaded drive. The traveling wheel set reduces transfer resistance through rolling friction, ensuring movement stability.
It achieves stable clamping of plastic parts of different specifications, reduces frictional loss, extends equipment service life, reduces transfer resistance, and improves operating efficiency.
Smart Images
Figure CN224256544U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of transfer vehicle technology, specifically a transfer vehicle for plastic parts production. Background Technology
[0002] In the plastics manufacturing industry, the transfer of plastic parts is a crucial process for ensuring production continuity, from injection molding to subsequent processing and assembly. Currently, the transfer equipment widely used in the industry has many technical limitations and cannot meet the transfer requirements for high-precision, multi-specification plastic parts.
[0003] Application number CN202421222451.5 discloses a textile production roll transfer trolley, relating to the technical field of textile production transfer trolleys. It includes a trolley body with a standing mechanism fixedly connected to its upper end. The lower end of the standing mechanism passes through four circular holes inside the trolley body and is fixedly connected to a standing plate. This invention uses a standing plate to restrict the movement of the device during roll loading and unloading, increasing stability. Through the cooperation of a dual-axis motor, threaded rod, fixing rod, fixing plate, and vertical plate, after roll loading and unloading, two trapezoidal push blocks are brought closer together. Then, with the cooperation of a spring, trapezoidal overlapping block, horizontal plate, and connecting rod, the standing plate is moved upwards to a certain height, facilitating the movement of the device to transfer the roll.
[0004] The core positioning structure of this cloth roller transfer trolley relies on a dual-axis motor and threaded rod to drive a trapezoidal push block and a trapezoidal overlapping block. Although it can achieve the lifting and lowering of the standing plate, the overall positioning mechanism is designed for the cylindrical characteristics of the cloth roller and lacks flexible adjustment capability. The standing mechanism of the trolley is connected to the trolley body through a circular hole. During the lifting and lowering of the standing plate, only the spring provides the restoring force. With long-term use, the structure is prone to loosening due to spring fatigue, which may cause shaking during heavy-load transfer. Utility Model Content
[0005] The purpose of this invention is to provide a transfer vehicle for the production of plastic parts, which solves the problem of poor structural stability.
[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:
[0007] This utility model is a transfer vehicle for plastic parts production, including a loading platform and a workpiece positioning mechanism. The workpiece positioning mechanism is installed on the inner wall of the middle part of the loading platform. The loading platform includes a frame longitudinal beam, a frame cross beam, a set of wheels, a slide, a support, an arc-shaped support plate, an adjustable plate, a connecting frame, a sleeve rod, an outer chamfer rod, an inner chamfer rod, a clamping block, a threaded rotating rod, a tight positioning seal ring, and a friction rubber ring.
[0008] Both the longitudinal beams and crossbeams of the frame are provided with grooves, and the carriage is slidably set in the grooves of the longitudinal beams and crossbeams of the frame; the support is installed at both ends of the carriage; the arc-shaped support plate is installed at the front and rear ends of the top of the longitudinal beams of the frame; the adjustable plate is hinged to the top of the support; the connecting frame is installed on the outside of the adjustable plate.
[0009] The sleeve rod is installed on the inner side of the connecting frame. The inner wall of the sleeve rod is provided with a tight positioning seal and two friction rubber rings. The inner chamfer rod is fitted inside the friction rubber ring. The tail end of the inner chamfer rod is welded with a threaded rotating rod, which is threadedly connected to the inner wall of the connecting frame. The front end of the outer chamfer rod is provided with a clamping block, and the inner chamfer rod is in contact with the tight positioning seal.
[0010] The purpose of this setup is that, during the use of the transfer vehicle, the plastic parts are placed on the curved support plate at the top of the longitudinal beam of the frame, forming an initial load. Based on the size of the plastic parts, the slide is pushed along the grooves of the longitudinal and transverse beams of the frame, causing the supports at both ends to move synchronously and adjusting the position of the clamping components. The adjustable plate is rotated around the hinge point at the top of the support, allowing the connecting frame and auxiliary structures to adapt to the side angle of the plastic parts.
[0011] By rotating the threaded rod, its threaded engagement with the inner wall of the connecting frame is converted into axial force, which pushes the inner chamfer rod to move along the inner wall of the sleeve rod. The inner chamfer rod fits with the sealing ring to ensure sealing stability, while contacting the friction rubber ring to reduce sliding friction.
[0012] During the forward movement of the inner chamfering rod, its end engages with the chamfering structure of the outer chamfering rod, pushing the outer chamfering rod to move synchronously, ultimately causing the front clamping block to press against the side of the plastic part, completing the positioning. The entire process achieves stable clamping of plastic parts of different specifications through a three-stage coordination of sliding adjustment, angle adaptation, and threaded transmission.
[0013] The screw drive of the threaded rotating rod has self-locking properties. Combined with the rigid contact of the inner and outer chamfered rods, it can stably control the clamping force of the clamping block, avoiding damage to the workpiece due to excessive tightness or displacement due to excessive looseness. The tight positioning seal ring and friction rubber ring inside the sleeve rod not only ensure the sealing of the rod body sliding, but also reduce friction loss and extend the service life of the equipment.
[0014] Furthermore, the loading platform includes a set of wheels, which is installed at the bottom of the longitudinal beams and cross beams of the frame. The set of wheels includes a wheel body and an axle. The axle is fixedly connected to the longitudinal beams and cross beams of the frame, and the wheel body can rotate around the axle.
[0015] The purpose of this design is that, during the use of the transfer vehicle, the axles of the traveling wheels are fixed to the bottom of the longitudinal and transverse beams of the frame, while the wheels rotate freely around the axles. When pushing the loading platform, the wheels use rolling friction instead of sliding friction, reducing transfer resistance. The contact between the wheels and the ground generates driving force, propelling the entire transfer vehicle along a predetermined path to achieve the position transfer of the plastic parts. At the same time, the fixed axle structure ensures the stability of the frame during movement.
[0016] Furthermore, the workpiece positioning mechanism includes a central transmission frame, a guide transmission shaft, an adjusting screw, a screw nut seat, a connecting support, and a positioning clamping block;
[0017] The central transmission frame is installed on the inner wall of the loading platform. The guide drive shaft and the adjusting screw are arranged in parallel on the central transmission frame. The screw nut seat is threadedly connected to the adjusting screw and slides with the guide drive shaft. The connecting support is installed on the screw nut seat, and the positioning clamp is installed on the connecting support.
[0018] The purpose of this design is to provide a mounting base for the central transmission frame during the use of the transfer vehicle, with the guide drive shaft arranged parallel to the adjusting screw. When the adjusting screw is rotated, the screw nut seat moves along the adjusting screw via a threaded engagement, while simultaneously sliding along the guide drive shaft to ensure linear motion. The screw nut seat drives the connecting support and positioning clamp to move synchronously, allowing the positioning clamp to complete auxiliary clamping from the center of the plastic part, forming a coordinated positioning with the side clamping of the first component.
[0019] Furthermore, the two ends of the carriage are provided with protrusions that are adapted to the grooves of the longitudinal beams and cross beams of the vehicle frame, and the protrusions are embedded in the grooves to form a sliding fit.
[0020] The purpose of this design is that, during the use of the transfer vehicle, the protrusions at both ends of the carriage embed into the grooves of the frame's longitudinal beams and cross beams, with the shapes of the protrusions and grooves matching to limit the carriage's vertical movement. When the carriage is pushed, the protrusions slide along the length of the grooves, causing the supports and subsequent components to move smoothly, avoiding jamming or displacement during sliding, and ensuring the accuracy of the clamping component's position adjustment.
[0021] Furthermore, the end of the threaded rotating rod away from the inner chamfer rod is provided with an operating part. The cross-section of the operating part is a regular hexagon. When the threaded rotating rod rotates, it can drive the inner chamfer rod to move along the axial direction of the sleeve rod.
[0022] The purpose of this design is that, during the use of the transfer vehicle, the operating part of the threaded rod is operated by rotating it with a tool or by hand. The threaded engagement between the threaded rod and the connecting frame converts the rotational motion into axial thrust, driving the inner chamfer rod to move axially along the inner wall of the sleeve. The movement of the inner chamfer rod is transmitted to the outer chamfer rod through the chamfer engagement, ultimately achieving the clamping or releasing action of the clamping block. The design of the operating part improves the rotation efficiency.
[0023] Furthermore, one end of the adjusting screw extends to the outside of the central transmission frame and is provided with a rotating handle. When the rotating handle is rotated, it can drive the adjusting screw to rotate, causing the screw nut seat to slide along the guide transmission shaft, and then drive the positioning clamp to move through the connecting support.
[0024] The purpose of this design is that, during the use of the transfer vehicle, rotating the adjusting screw, which extends to the outer side of the central transmission frame, causes the adjusting screw to rotate around its own axis. The screw nut seat moves along the adjusting screw under the action of the thread, while simultaneously maintaining linear motion constrained by the guide transmission shaft. The screw nut seat, through a connecting support, moves the positioning clamp closer to or further away from the plastic part, achieving adjustment of the central positioning tightness. The rotating handle design reduces the required operating force.
[0025] This utility model has the following beneficial effects:
[0026] (1) By setting up the sleeve rod, chamfer rod and positioning seal ring, the screw drive of the threaded rotating rod has self-locking property. With the rigid contact of the inner and outer chamfer rods, the clamping force of the clamping block can be stably controlled to avoid damage to the workpiece due to excessive tightness or displacement due to excessive looseness. The tight positioning seal ring and friction rubber ring inside the sleeve rod not only ensure the sealing of the rod body sliding, but also reduce friction loss and extend the service life of the equipment.
[0027] (2) This utility model, through the setting of adjusting screw and connecting support, allows the rotating handle extending from the adjusting screw to the outer side of the central transmission frame. The handle drives the adjusting screw to rotate around its own axis. The screw nut seat moves along the adjusting screw under the action of the thread, while maintaining linear motion constrained by the guide transmission shaft. The screw nut seat, through the connecting support, drives the positioning clamp to move closer to or away from the plastic part, realizing the tightness adjustment of the central positioning. The setting of the rotating handle reduces the operating force required.
[0028] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description
[0029] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of 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.
[0030] Figure 1 This is a schematic diagram of the main structure of the present utility model;
[0031] Figure 2 This is a schematic diagram of the structure of the cargo platform installation part of this utility model;
[0032] Figure 3 This is a schematic diagram of the disassembled structure of the workpiece positioning mechanism of this utility model;
[0033] Figure 4 This is a schematic cross-sectional view of the cargo platform section of this utility model.
[0034] Figure 5 This utility model Figure 4 Schematic diagram of the structure at point A in the middle;
[0035] The attached diagram lists the components represented by each number as follows:
[0036] In the diagram: 1. Cargo platform installation; 101. Frame longitudinal beam; 102. Frame crossbeam; 103. Wheelset; 104. Slide; 105. Support; 106. Arc-shaped support plate; 107. Adjustable plate; 108. Connecting frame; 109. Sleeve rod; 1101. Outer chamfer rod; 1102. Inner chamfer rod; 111. Clamping block; 112. Threaded rotating rod; 113. Sealing seal; 114. Friction rubber ring; 2. Workpiece positioning mechanism; 201. Central transmission frame; 202. Guide transmission shaft; 203. Adjusting screw; 204. Screw nut seat; 205. Connecting support; 206. Positioning clamping block. Detailed Implementation
[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0038] 2. Please refer to Figures 1-5 As shown, this utility model is a transfer vehicle for plastic parts production, including a loading platform 1 and a workpiece positioning mechanism 2. The workpiece positioning mechanism 2 is installed on the inner wall of the middle part of the loading platform 1. The loading platform 1 includes a frame longitudinal beam 101, a frame cross beam 102, a set of wheels 103, a slide 104, a support 105, an arc-shaped support plate 106, an adjustable plate 107, a connecting frame 108, a sleeve rod 109, an outer chamfer rod 1101, an inner chamfer rod 1102, a clamping block 111, a threaded rotating rod 112, a tight positioning seal ring 113, and a friction rubber ring 114.
[0039] Both the frame longitudinal beam 101 and the frame cross beam 102 are provided with grooves, and the slide 104 is slidably disposed in the grooves of the frame longitudinal beam 101 and the frame cross beam 102; the support 105 is installed at both ends of the slide 104; the arc-shaped support plate 106 is installed at the front and rear ends of the top of the frame longitudinal beam 101; the adjustable plate 107 is hinged to the top of the support 105; the connecting frame 108 is installed on the outside of the adjustable plate 107.
[0040] The sleeve rod 109 is installed on the inner side of the connecting frame 108. The inner wall of the sleeve rod 109 is provided with a tight positioning seal ring 113 and two friction rubber rings 114. The inner chamfer rod 1102 is fitted inside the friction rubber rings 114. The tail end of the inner chamfer rod 1102 is welded with a threaded rotating rod 112, which is threadedly connected to the inner wall of the connecting frame 108. The front end of the outer chamfer rod 1101 is provided with a clamping block 111, and the inner chamfer rod 1102 is in contact with the tight positioning seal ring 113.
[0041] The purpose of this arrangement is that, during the use of the transfer vehicle, the plastic parts are placed on the arc-shaped support plate 106 at the top of the longitudinal beam 101 of the frame, forming an initial load-bearing structure. Based on the size of the plastic parts, the slide 104 is pushed to slide along the grooves of the longitudinal beam 101 and the crossbeam 102 of the frame, causing the supports 105 at both ends to move synchronously, adjusting the position of the clamping components. The adjustable plate 107 is rotated around the hinge point at the top of the support 105, allowing the connecting frame 108 and its auxiliary structures to adapt to the side angle of the plastic parts.
[0042] By rotating the threaded rod 112, its threaded engagement with the inner wall of the connecting frame 108 is converted into axial force, which pushes the inner chamfer rod 1102 to move along the inner wall of the sleeve rod 109. The inner chamfer rod 1102 fits with the sealing ring 113 to ensure sealing stability, while contacting the friction rubber ring 114 to reduce sliding friction.
[0043] During the forward movement of the inner chamfering rod 1102, its end engages with the chamfering structure of the outer chamfering rod 1101, pushing the outer chamfering rod 1101 to move synchronously, ultimately causing the front clamping block 111 to press against the side of the plastic part, completing the positioning. The entire process achieves stable clamping of plastic parts of different specifications through a three-stage coordination of sliding adjustment, angle adaptation, and threaded transmission.
[0044] The screw drive of the threaded rotating rod 112 has self-locking properties. Combined with the rigid contact of the inner and outer chamfered rods, it can stably control the clamping force of the clamping block 111, avoiding damage to the workpiece due to excessive tightness or displacement due to excessive looseness. The sealing ring 113 and friction rubber ring 114 inside the sleeve rod 109 not only ensure the sealing of the rod body sliding, but also reduce friction loss and extend the service life of the equipment.
[0045] The loading platform 1 includes a set of wheels for travel 103, which is installed at the bottom of the longitudinal beam 101 and the cross beam 102 of the frame. The set of wheels for travel 103 includes a wheel body and an axle. The axle is fixedly connected to the longitudinal beam 101 and the cross beam 102 of the frame, and the wheel body can rotate around the axle.
[0046] The purpose of this design is that, during the use of the transfer vehicle, the axles of the walking wheel set 103 are fixed to the bottom of the frame longitudinal beam 101 and the frame cross beam 102, while the wheels rotate freely around the axles. When pushing the loading platform 1, the wheels use rolling friction instead of sliding friction, reducing transfer resistance. The contact between the wheels and the ground generates driving force, propelling the entire transfer vehicle along a predetermined path to achieve the position transfer of the plastic parts. At the same time, the fixed structure of the axles ensures the stability of the frame during movement.
[0047] The workpiece positioning mechanism 2 includes a central transmission frame 201, a guide transmission shaft 202, an adjusting screw 203, a screw nut seat 204, a connecting support 205, and a positioning clamp 206;
[0048] The central transmission frame 201 is installed on the central inner wall of the loading platform 1. The guide transmission shaft 202 and the adjusting screw 203 are arranged in parallel on the central transmission frame 201. The screw nut seat 204 is threadedly connected to the adjusting screw 203 and slides with the guide transmission shaft 202. The connecting support 205 is installed on the screw nut seat 204, and the positioning clamp 206 is installed on the connecting support 205.
[0049] The purpose of this arrangement is that, during the use of the transfer vehicle, the central transmission frame 201 provides the mounting base, and the guide transmission shaft 202 is arranged parallel to the adjusting screw 203. When the adjusting screw 203 is rotated, the screw nut seat 204 moves along the adjusting screw 203 through a threaded engagement, while simultaneously sliding along the guide transmission shaft 202 to ensure linearity of movement. The screw nut seat 204 drives the connecting support 205 and the positioning clamp 206 to move synchronously, allowing the positioning clamp 206 to complete auxiliary clamping from the middle of the plastic part, forming a cooperative positioning with the side clamping of the first part.
[0050] The two ends of the carriage 104 are provided with protrusions that are adapted to the grooves of the frame longitudinal beam 101 and the frame cross beam 102, and the protrusions are embedded in the grooves to form a sliding fit.
[0051] The purpose of this design is that, during the use of the transfer vehicle, the protrusions at both ends of the slide 104 are embedded in the grooves of the frame longitudinal beam 101 and the frame cross beam 102, and the shape of the protrusions and grooves matches to limit the vertical movement of the slide 104. When the slide 104 is pushed, the protrusions slide along the length of the groove, causing the support 105 and subsequent components to move smoothly, avoiding jamming or displacement during sliding, and ensuring the accuracy of the clamping component position adjustment.
[0052] The threaded rotating rod 112 has an operating part at one end away from the inner chamfer rod 1102. The cross-section of the operating part is a regular hexagon. When the threaded rotating rod 112 rotates, it can drive the inner chamfer rod 1102 to move along the axial direction of the sleeve rod 109.
[0053] The purpose of this design is that, during the use of the transfer vehicle, the operating part of the threaded rotating rod 112 is rotated by means of a tool or by hand. The threaded engagement between the threaded rotating rod 112 and the connecting frame 108 converts the rotational motion into axial thrust, driving the inner chamfered rod 1102 to move axially along the inner wall of the sleeve rod 109. The movement of the inner chamfered rod 1102 is transmitted to the outer chamfered rod 1101 through the chamfer engagement, ultimately achieving the clamping or loosening action of the clamping block 111. The design of the operating part improves the rotation efficiency.
[0054] One end of the adjusting screw 203 extends to the outside of the middle transmission frame 201 and is provided with a rotating handle. When the rotating handle is turned, it can drive the adjusting screw 203 to rotate, so that the screw nut seat 204 slides along the guide transmission shaft 202, and then drives the positioning clamp 206 to move through the connecting support 205.
[0055] The purpose of this design is that, during the use of the transfer vehicle, rotating the adjusting screw 203 to the rotating handle extending to the outer side of the central transmission frame 201 causes the adjusting screw 203 to rotate around its own axis. The screw nut seat 204 moves along the adjusting screw 203 under the action of the thread, while simultaneously maintaining linear motion constrained by the guide transmission shaft 202. The screw nut seat 204, through the connecting support 205, moves the positioning clamp 206 closer to or further away from the plastic part, achieving adjustment of the tightness of the central positioning. The rotating handle design reduces the required operating force.
[0056] When in use, the operator places the plastic parts to be transferred steadily on the arc-shaped support plates 106 at the front and rear ends of the top of the longitudinal beam 101 of the frame. The arc-shaped structure of the support plate can initially fit the bottom contour of the plastic parts, forming a basic load-bearing structure and avoiding direct rigid contact between the workpiece and the frame, which would cause wear.
[0057] Based on the dimensions of the plastic part, the slide 104 is pushed to slide along the grooves of the longitudinal beam 101 and the cross beam 102 of the frame. The protrusions at both ends of the slide 104 precisely match the grooves, ensuring a smooth and non-offset sliding process. This, in turn, drives the supports 105 installed at both ends of the slide 104 to move synchronously, adjusting the clamping assembly to a position corresponding to the side of the workpiece. At the same time, the adjustable plate 107 is rotated around the hinge point at the top of the support 105, allowing the connecting frame 108 and its associated sleeve rod 109 and rod structure to adapt to the tilt angle of the plastic part, preparing for subsequent positioning.
[0058] Side positioning is driven by threaded rotating rod 112: The operator rotates the threaded rotating rod 112 through the operating part, and its threaded engagement with the inner wall of the connecting frame 108 is converted into axial force, pushing the inner chamfer rod 1102 to move along the inner wall of the sleeve rod 109. The sealing ring 113 inside the sleeve rod 109 fits with the inner chamfer rod 1102 to ensure sealing stability, while the friction rubber ring 114 reduces sliding friction. The inner chamfer rod 1102 pushes the outer chamfer rod 1101 forward through the end chamfering structure, so that the front clamping block 111 tightly abuts against the side of the plastic part. The middle positioning is started synchronously: Rotating the rotating handle on the outside of the adjusting screw 203 drives the screw nut seat 204 to slide along the adjusting screw 203 and the guide transmission shaft 202, driving the connecting support 205 and the positioning clamping block 206 to complete the auxiliary clamping from the middle of the workpiece, forming a three-dimensional fixation with the side clamping;
[0059] After positioning is completed, the operator pushes the loading platform 1, and the walking wheel set 103 at the bottom of the frame longitudinal beam 101 and frame cross beam 102 achieves rolling movement by rotating the wheel body around the wheel axle, which greatly reduces the transfer resistance.
[0060] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A transfer vehicle for producing plastic parts, comprising a loading platform (1) and a workpiece positioning mechanism (2), characterized in that: The workpiece positioning mechanism (2) is installed on the inner wall of the middle part of the loading platform (1). The loading platform (1) includes a frame longitudinal beam (101), a frame cross beam (102), a set of wheels (103), a carriage (104), a support (105), an arc-shaped support plate (106), an adjustable plate (107), a connecting frame (108), a sleeve rod (109), an outer chamfer rod (1101), an inner chamfer rod (1102), a clamping block (111), a threaded rotating rod (112), a tight positioning seal ring (113), and a friction rubber ring (114). Both the frame longitudinal beam (101) and the frame cross beam (102) are provided with grooves, and the carriage (104) is slidably disposed in the grooves of the frame longitudinal beam (101) and the frame cross beam (102); the support (105) is installed at both ends of the carriage (104); the arc-shaped support plate (106) is installed at the front and rear ends of the top of the frame longitudinal beam (101); the adjustable plate (107) is hinged to the top of the support (105); the connecting frame (108) is installed on the outside of the adjustable plate (107); The sleeve rod (109) is installed on the inner side of the connecting frame (108). The inner wall of the sleeve rod (109) is provided with a tight positioning seal ring (113) and two friction rubber rings (114). The inner chamfer rod (1102) fits inside the friction rubber ring (114). The tail end of the inner chamfer rod (1102) is welded with a threaded rotating rod (112). The threaded rotating rod (112) is threadedly connected to the inner wall of the connecting frame (108). The front end of the outer chamfer rod (1101) is provided with a clamping block (111). The inner chamfer rod (1102) is in contact with the tight positioning seal ring (113).
2. The transfer cart for plastic parts production according to claim 1, characterized in that: The loading platform (1) includes a set of wheels (103), which is installed at the bottom of the frame longitudinal beam (101) and the frame cross beam (102). The set of wheels (103) includes a wheel body and a wheel axle. The wheel axle is fixedly connected to the frame longitudinal beam (101) and the frame cross beam (102), and the wheel body can rotate around the wheel axle.
3. The transfer cart for plastic parts production according to claim 1, characterized in that: The workpiece positioning mechanism (2) includes a central transmission frame (201), a guide transmission shaft (202), an adjusting screw (203), a screw nut seat (204), a connecting support (205), and a positioning clamp (206); The central transmission frame (201) is installed on the central inner wall of the loading platform (1). The guide transmission shaft (202) and the adjusting screw (203) are arranged in parallel on the central transmission frame (201). The screw nut seat (204) is threadedly connected to the adjusting screw (203) and slides with the guide transmission shaft (202). The connecting support (205) is installed on the screw nut seat (204), and the positioning clamp (206) is installed on the connecting support (205).
4. The transfer cart for plastic parts production according to claim 1, characterized in that: The slide (104) has protrusions at both ends that are adapted to the grooves of the frame longitudinal beam (101) and the frame cross beam (102), and the protrusions are embedded in the grooves to form a sliding fit.
5. The transfer cart for plastic parts production according to claim 1, characterized in that: The threaded rotating rod (112) has an operating part at the end away from the inner chamfer rod (1102). When the threaded rotating rod (112) rotates, it can drive the inner chamfer rod (1102) to move along the axial direction of the sleeve rod (109).
6. The transfer cart for plastic parts production according to claim 3, characterized in that: One end of the adjusting screw (203) extends to the outside of the middle transmission frame (201) and is provided with a rotating handle. When the rotating handle is rotated, it can drive the adjusting screw (203) to rotate, so that the screw nut seat (204) slides along the guide transmission shaft (202), and then drives the positioning clamp (206) to move through the connecting support (205).