Draw-bar box injection mold convenient to discharge
By designing injection molds for the left and right plates, and combining molding extrusion and pushing unloading mechanisms, the problem of material sticking to the mold during injection molding was solved, thus achieving efficient injection molding and automatic unloading of the trolley case body.
Patent Information
- Application Number
- CN202520227527.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-13
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-02-13
AI Technical Summary
Existing trolley case injection molds suffer from material adhesion to the mold during the injection process, making it difficult to unload the material and achieve an efficient and rapid unloading process.
Design an injection mold that includes a left plate and a right plate. Through a forming extrusion mechanism and a pushing unloading mechanism, a reinforcing pattern is formed by a shaping extrusion plate, a textured groove and a textured strip. Automatic unloading is achieved through a positioning rod and a compression spring.
It achieves efficient injection molding and automatic unloading of the trolley case body, solves the problem of material sticking to the mold and causing unloading difficulties, and improves production efficiency.
Smart Images

Figure CN223934078U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of injection mold technology, specifically to an injection mold for a trolley case that is easy to cut. Background Technology
[0002] Currently, injection molds are the core process equipment in the manufacturing of trolley cases. Their main function is to inject molten plastic into the mold cavity through injection molding, and after cooling and solidification, form the outer shell of the trolley case. During this process, the outer shell adheres tightly to the extruding mold, making it difficult to unload. Therefore, there is a need for trolley case injection molds that facilitate unloading. Through the design of a special unloading mechanism, an efficient and fast unloading process is achieved, solving the problem of unloading difficulties caused by material adhesion to the mold during injection molding.
[0003] A Chinese utility model patent application, CN221851016U, discloses an injection mold for an ABS trolley case. This device utilizes a liftable sliding sleeve installed outside a connecting bracket. When the upper mold needs to be fixed, the top plate rotates the lower pressure plate to directly above the upper mold. Then, a return spring releases its force, pushing the sliding sleeve downwards along the connecting bracket. This allows the sliding sleeve to insert a positioning rod into the positioning seat, quickly creating a steering limit on the connecting bracket and facilitating rapid correction of the top plate's position. However, this device does not solve the problem of material adhesion to the mold during injection molding, which causes difficulties in unloading. Utility Model Content
[0004] The purpose of this invention is to provide a convenient injection mold for trolley cases 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 convenient injection mold for rolling suitcases, comprising:
[0007] The left plate has a welding and fixed installation mechanism on one side, a forming and extrusion mechanism on the right side, and a pushing and feeding mechanism on the right side of the left plate through the forming and extrusion mechanism.
[0008] The right plate is movably mounted on the right side of the left plate via a forming and extrusion mechanism. The right plate has mounting screw holes on both sides and fixing screw holes on both sides. A push tube is fixedly mounted on the left side of the right plate via the mounting screw holes, and a sealing strip is fixedly mounted on the right side of the left plate by welding.
[0009] Preferably, the molding extrusion mechanism includes a shaping extrusion plate and a shaping extrusion groove. The shaping extrusion groove is provided on the right side of the left plate, and the shaping extrusion plate is movably disposed on the inner wall of the shaping extrusion groove. The right side of the shaping extrusion plate is fixed to the left side of the right plate by screws. By driving the left and right plates to move towards the middle by the injection molding machine, the shaping extrusion plate on the left side of the right plate can extrude the injection molding material into the shaping extrusion groove on the right side of the left plate, thereby achieving the effect of injection molding of the trolley case body.
[0010] Preferably, the inner wall of the shaping extrusion groove is provided with a textured groove, and a textured strip is movably provided on the inner wall of the textured groove. One side of the textured strip is fixedly installed on both sides of the shaping extrusion plate by welding. During the process of the shaping extrusion plate pressing into the shaping extrusion groove, the interaction between the textured groove and the textured strip can form a certain reinforcing texture on the body of the suitcase.
[0011] Preferably, the pushing and feeding mechanism includes a frame plate and an insert tube. The frame plate is movably disposed on one side of the shaping and extruding plate, and the insert tube is fixedly disposed on the right side of the frame plate by welding. The end of the insert tube away from the frame plate is movably disposed on the inner wall of the push tube. The outer surface of the insert tube is movably disposed with a mounting screw cap, and the inner wall of the mounting screw cap is movably disposed with a mounting screw tube. One side of the mounting screw tube is fixedly disposed on one end of the push tube by welding, and one end of the insert tube is fixedly disposed on one end by welding. The insert tube, which is mounted on one side of the shaping and extruding plate, is installed inside the push tube through the mounting screw cap on the right side of the frame plate, so that one end of the positioning rod inside the push tube is inserted into the insert tube.
[0012] Preferably, a positioning rod is fixedly installed on the inner wall of the push tube by welding. One end of the positioning rod is movably installed on the inner wall of the insertion tube. A compression spring is sleeved on the outer surface of the positioning rod. One end of the compression spring is movably installed on the right side of the push ring. Under the action of the compression spring on one side of the positioning rod, the frame plate is pushed forward, which pushes the box body of the shaped extrusion plate on one side to achieve the demolding effect and the automatic unloading effect.
[0013] Preferably, the docking installation mechanism includes a positioning tube and a positioning rod. Positioning screw holes are provided on both sides of the left plate. A positioning tube is fixedly installed on the inner wall of the positioning screw hole. A positioning rod is movably installed on the inner wall of the positioning tube. One end of the positioning rod is fixedly installed on the left side of the frame plate by welding. Fixed mounting plates are fixedly installed on both sides of the left plate and both sides of the right plate by welding. A fixed mounting hole is provided on one side of the fixed mounting plate. The left plate and the right plate can be installed inside the injection molding machine by bolts through the fixed mounting plates on both sides of the left and right plates and the fixed mounting holes.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] 1. This is a convenient injection mold for trolley cases. The injection mold consists of a left plate mold and a right plate extrusion mold. The left and right plates are fixed and installed inside the injection molding machine by bolts through the fixing and mounting holes on both sides of the left and right plates. In daily injection molding operations, the injection molding machine moves the left and right plates towards the center, so that the shaping extrusion plate on the left side of the right plate can extrude the injection material into the shaping extrusion groove on the right side of the left plate, thereby achieving the effect of injection molding of the trolley case body.
[0016] 2. This easy-to-discharge trolley case injection mold, through the extrusion process of the shaping extrusion plate into the shaping extrusion groove, the interaction of the textured groove and textured strip can form a certain reinforcing texture on the trolley case body. After the internal material is shaped, the left and right panels can be separated. During the separation process, the frame plate installed on one side of the shaping extrusion plate, through the insertion tube on the right side of the frame plate and the installation screw cap installed inside the push tube, so that one end of the binding rod inside the push tube is inserted into the insertion tube, and under the action of the compression spring on one side of the binding rod, the frame plate is pushed forward, thus pushing the trolley case body after being shaped on one side of the shaping extrusion plate, so as to achieve the demolding effect and the automatic material unloading effect. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0018] Figure 2 This is a schematic diagram of the overall structure of the left plate of this utility model;
[0019] Figure 3 This is a schematic diagram of the overall structure of the right plate of this utility model;
[0020] Figure 4 This is a schematic diagram of the internal structure of the push tube of this utility model;
[0021] In the diagram: 100, left plate; 200, right plate; 201, mounting screw hole; 203, fixing screw hole; 202, push tube; 107, sealing strip; 106, shaping extrusion groove; 204, shaping extrusion plate; 108, textured groove; 208, textured strip; 205, frame plate; 207, insert tube; 209, mounting screw cap; 211, mounting screw tube; 214, push ring; 212, positioning rod; 213, compression spring; 104, positioning screw hole; 105, positioning tube; 206, positioning rod; 101, fixed mounting plate; 102, fixed mounting hole. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.
[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "several" means two or more, unless otherwise explicitly specified.
[0024] Please see Figures 1-4 As shown, this utility model provides a technical solution:
[0025] A convenient injection mold for rolling suitcases, comprising:
[0026] The left plate 100 has a docking and installation mechanism fixed on one side by welding, a forming and extrusion mechanism movably installed on the right side of the left plate 100, and a pushing and feeding mechanism movably installed on the right side of the left plate 100 through the forming and extrusion mechanism.
[0027] The right plate 200 is movably mounted on the right side of the left plate 100 via a forming extrusion mechanism. The right plate 200 has mounting screw holes 201 and fixing screw holes 203 on both sides. The right plate 200 has a push tube 202 fixedly mounted on the left side via the mounting screw holes 201. The left plate 100 has a sealing strip 107 fixedly mounted on the right side via welding.
[0028] In this embodiment, preferably, the forming extrusion mechanism includes a shaping extrusion plate 204 and a shaping extrusion groove 106. The shaping extrusion groove 106 is provided on the right side of the left plate 100, and the shaping extrusion plate 204 is movably disposed on the inner wall of the shaping extrusion groove 106. The right side of the shaping extrusion plate 204 is fixedly disposed on the left side of the right plate 200 by screws.
[0029] By using the above method, the injection molding machine moves the left plate 100 and the right plate 200 towards the middle, so that the shaping extrusion plate 204 on the left side of the right plate 200 can extrude the injection material into the shaping extrusion groove 106 on the right side of the left plate 100, thereby achieving the effect of injection molding of the trolley case body.
[0030] In this embodiment, preferably, the inner wall of the shaping extrusion groove 106 is provided with a textured groove 108, and a textured strip 208 is movably provided on the inner wall of the textured groove 108. One side of the textured strip 208 is fixedly disposed on both sides of the shaping extrusion plate 204 by welding.
[0031] Through the above scheme, during the pressing process of the shaping extrusion plate 204 into the shaping extrusion groove 106, the interaction between the textured groove 108 and the textured strip 208 can form a certain reinforcing texture on the body of the suitcase.
[0032] In this embodiment, preferably, the pushing and feeding mechanism includes a frame plate 205 and an insert tube 207. The frame plate 205 is movably disposed on one side of the shaping and extruding plate 204, and the insert tube 207 is fixedly disposed on the right side of the frame plate 205 by welding. The end of the insert tube 207 away from the frame plate 205 is movably disposed on the inner wall of the push tube 202. The outer surface of the insert tube 207 is movably disposed on the mounting screw cap 209, and the inner wall of the mounting screw cap 209 is movably disposed on the mounting screw tube 211. One side of the mounting screw tube 211 is fixedly disposed on one end of the push tube 202 by welding, and one end of the insert tube 207 is fixedly disposed on the push ring 214 by welding.
[0033] With the above scheme, the frame plate 205 installed on one side of the shaping extrusion plate 204, the insertion tube 207 on the right side of the frame plate 205 is installed inside the push tube 202 through the mounting screw cap 209, so that one end of the binding rod 212 inside the push tube 202 is inserted into the insertion tube 207.
[0034] In this embodiment, preferably, a positioning rod 212 is fixedly provided on the inner wall of the push tube 202 by welding. One end of the positioning rod 212 is movably provided on the inner wall of the insertion tube 207. A compression spring 213 is sleeved on the outer surface of the positioning rod 212. One end of the compression spring 213 is movably provided on the right side of the push ring 214.
[0035] With the above solution, the frame plate 205 is pushed forward by the compression spring 213 on one side of the positioning rod 212, which pushes the box body of the shaped extrusion plate 204 to achieve the demolding effect and the automatic feeding effect.
[0036] In this embodiment, preferably, the docking installation mechanism includes a positioning tube 105 and a positioning rod 206. Positioning screw holes 104 are provided on both sides of the left plate 100. The positioning tube 105 is fixedly installed on the inner wall of the positioning screw hole 104. The positioning rod 206 is movably installed on the inner wall of the positioning tube 105. One end of the positioning rod 206 is fixedly installed on the left side of the frame plate 205 by welding. Fixed mounting plates 101 are fixedly installed on both sides of the left plate 100 and both sides of the right plate 200 by welding. Fixed mounting holes 102 are provided on one side of the fixed mounting plate 101.
[0037] With the above solution, the left plate 100 and the right plate 200 can be installed inside the injection molding machine by bolts through the fixed mounting plates 101 on both sides of the left plate 100 and the right plate 200 via the fixed mounting holes 102.
[0038] In this embodiment, a convenient trolley case injection mold is used. The trolley case injection mold consists of a left plate 100 mold and a right plate 200 extrusion mold. The left plate 100 and right plate 200 are fixed and installed inside the injection molding machine by bolts through the fixed and installed holes 102 on the fixed mounting plates 101 on both sides of the left plate 100 and right plate 200. In daily injection molding operations, the injection molding machine moves the left plate 100 and right plate 200 towards the middle, so that the shaping extrusion plate 204 on the left side of the right plate 200 can extrude the injection material into the shaping extrusion groove 106 on the right side of the left plate 100, thereby achieving the effect of injection molding of the trolley case body.
[0039] During the pressing process of the shaping extrusion plate 204 into the shaping extrusion groove 106, the interaction of the textured groove 108 and the textured strip 208 can form a certain reinforcing texture on the body of the trolley case. After the internal material is shaped, the left plate 100 and the right plate 200 can be separated. During the separation process, the frame plate 205 installed on one side of the shaping extrusion plate 204, and the insertion tube 207 on the right side of the frame plate 205 are installed inside the push tube 202 through the mounting screw cap 209. One end of the binding rod 212 inside the push tube 202 is inserted into the insertion tube 207. Under the action of the compression spring 213 on one side of the binding rod 212, the frame plate 205 is pushed forward, which pushes the trolley case body after it is shaped on one side of the shaping extrusion plate 204, so as to achieve the demolding effect and the automatic material unloading effect.
[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A convenient injection mold for rolling suitcases, characterized in that: include: The left plate (100) has a docking installation mechanism fixedly installed on one side by welding, and a forming extrusion mechanism is movably installed on the right side of the left plate (100). A pushing and feeding mechanism is movably installed on the right side of the left plate (100) through the forming extrusion mechanism. The right plate (200) is movably disposed on the right side of the left plate (100) via a forming extrusion mechanism. The right plate (200) has mounting screw holes (201) on both sides and fixing screw holes (203) on both sides. The right plate (200) has a push tube (202) fixedly disposed on the left side via the mounting screw holes (201). The left plate (100) has a sealing strip (107) fixedly disposed on the right side via welding.
2. The trolley case injection mold for easy material cutting according to claim 1, characterized in that: The forming extrusion mechanism includes a shaping extrusion plate (204) and a shaping extrusion groove (106). The shaping extrusion groove (106) is provided on the right side of the left plate (100). The shaping extrusion plate (204) is movably arranged on the inner wall of the shaping extrusion groove (106). The right side of the shaping extrusion plate (204) is fixed to the left side of the right plate (200) by screws.
3. The trolley case injection mold for easy material cutting according to claim 2, characterized in that: The inner wall of the shaping extrusion groove (106) is provided with a textured groove (108), and a textured strip (208) is movably provided on the inner wall of the textured groove (108). One side of the textured strip (208) is fixedly installed on both sides of the shaping extrusion plate (204) by welding.
4. The trolley case injection mold for easy material cutting according to claim 2, characterized in that: The pushing and feeding mechanism includes a frame plate (205) and an insert tube (207). The frame plate (205) is movably disposed on one side of the shaping extrusion plate (204). The insert tube (207) is fixedly disposed on the right side of the frame plate (205) by welding. The end of the insert tube (207) away from the frame plate (205) is movably disposed on the inner wall of the push tube (202). The outer surface of the insert tube (207) is movably disposed with a mounting screw cap (209). The inner wall of the mounting screw cap (209) is movably disposed with a mounting screw tube (211). One side of the mounting screw tube (211) is fixedly disposed on one end of the push tube (202) by welding. The end of the insert tube (207) is fixedly disposed with a push ring (214) by welding.
5. The trolley case injection mold for easy material cutting according to claim 1, characterized in that: The inner wall of the push tube (202) is fixedly provided with a positioning rod (212) by welding. One end of the positioning rod (212) is movably disposed on the inner wall of the insertion tube (207). A compression spring (213) is sleeved on the outer surface of the positioning rod (212). One end of the compression spring (213) is movably disposed on the right side of the push ring (214).
6. The trolley case injection mold for easy material cutting according to claim 1, characterized in that: The docking and installation mechanism includes a positioning tube (105) and a positioning rod (206). Positioning screw holes (104) are provided on both sides of the left plate (100). The positioning tube (105) is fixedly installed on the inner wall of the positioning screw hole (104). The positioning rod (206) is movably installed on the inner wall of the positioning tube (105). One end of the positioning rod (206) is fixedly installed on the left side of the frame plate (205) by welding. The left plate (100) and the right plate (200) are fixedly installed on both sides by welding. The fixed installation plate (101) has a fixed installation hole (102) on one side.
Citation Information
Patent Citations
ABS draw-bar box injection mold
CN221851016U