A connection structure between a plastic part production mold and equipment
By using a servo motor-driven slider and limit plate structure, the problems of long connection time and low precision in traditional molds are solved, enabling rapid and accurate positioning of the mold, and improving equipment uptime and product accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUHU SAIER TECHNOLOGY CO LTD
- Filing Date
- 2025-06-06
- Publication Date
- 2026-07-31
AI Technical Summary
Traditional mold connection structures require manual adjustment and alignment, which is time-consuming. Furthermore, after long-term use, coaxiality deviation affects product accuracy, resulting in low equipment uptime and inaccurate product dimensions.
The slide block and limit plate structure driven by a servo motor, through which the servo motor drives the transmission screw and moving bar, realizes automatic centering and secondary fixing of the mold. Combined with the engagement of the limit ball and the auxiliary groove, it ensures the precise positioning of the mold.
It enables rapid and precise positioning of molds, reduces manual adjustment time, improves equipment uptime and product dimensional accuracy, and extends equipment lifespan.
Smart Images

Figure CN224576040U_ABST
Abstract
Description
Technical Field
[0001] This utility model mainly relates to the field of injection molding production, specifically to a connection structure between a plastic part production mold and equipment. Background Technology
[0002] Injection molding, as one of the most widely used plastic processing technologies in modern manufacturing, directly affects molding quality, production efficiency, and equipment lifespan through the connection structure between the core equipment, the injection molding machine, and the mold. With the development of advanced processes such as precision injection molding and multi-color injection molding, the industry has placed higher demands on the connection precision, stability, and rapid mold change capability between the mold and the equipment.
[0003] During the operation of specific embodiments, the inventors discovered the following defects: Traditional mold connection structures often use mechanical bolts and locating pins for fastening. While this structure is simple and reliable, it has significant drawbacks in practical applications: First, mold installation requires repeated manual adjustments to the alignment of the locating pins and template holes, taking an average of over 30 minutes and severely impacting equipment uptime. Second, long-term, high-frequency mold closing impacts can cause micron-level wear between the locating pins and template holes. Industry statistics show that after 2000 mold cycles, the coaxiality deviation of this type of structure can reach 0.05-0.1mm, directly affecting product dimensional accuracy.
[0004] It should be noted that the above content falls within the scope of the inventor's technical knowledge. Due to the vast and complex nature of the technical content in this field, the above content of this application does not necessarily constitute prior art. Utility Model Content
[0005] 1. The technical problem to be solved by the utility model: This utility model provides a connection structure between a plastic part production mold and equipment to solve the technical problems existing in the background art.
[0006] 2. Technical Solution: To achieve the above objectives, the technical solution provided by this utility model is as follows: a connection structure between a plastic part production mold and equipment, including an equipment structure, a connection and fixing structure provided on the top of the equipment structure, and a mold structure provided on the top of the equipment structure; The connecting and fixing structure includes a servo motor and a slider. The slider is slidably connected to both sides of the top of the equipment structure. A limit plate is provided on one side of the slider, and the limit plate is connected to the mold structure.
[0007] Furthermore, the device structure includes a device body, a guide groove rotatably connected to one side of the top of the device body, and drive gears provided on both sides of the top of the device body.
[0008] Furthermore, the servo motor is located inside the device body, and the output end of the servo motor is provided with a transmission screw. The threads at both ends of the transmission screw have opposite directions, and the two ends of the transmission screw are provided with moving bars. The two ends of the moving bars are rotatably connected to tension rods.
[0009] Furthermore, a positioning shaft is provided at the bottom of the slider, the positioning shaft is rotatably connected to the tension rod, and the number of sliders is set to four.
[0010] Furthermore, a side support is provided between the two sliders, and a first material tube is rotatably connected inside the side support. A toothed ring is provided at one end of the first material tube, and the number of toothed rings is set to multiple. The multiple toothed rings mesh with each other, and one toothed ring meshes with a drive gear. A limit ball is provided on one side of the inner wall of the first material tube.
[0011] Furthermore, the mold structure includes an injection mold body, which is disposed on the top of the equipment body. Limiting grooves are formed at the four corners of the injection mold body. The limiting grooves are fitted with limiting plates. Second material tubes are provided on both sides of the limiting grooves. An auxiliary groove is formed on the outer wall of the second material tube. The auxiliary groove is L-shaped.
[0012] 3. Beneficial effects: Compared with the prior art, the technical solution provided by this utility model has the following advantages: This invention features an inwardly sliding slider that allows a limiting plate to be inserted into the inner wall of a mold structure placed on top of the equipment structure. The four corners of the mold structure contact the limiting plate, which pushes the mold structure to the middle position of the equipment structure. Furthermore, the interior of the mold structure is connected to various pipes, with the first and second material pipes interconnected. The first material pipe rotates, causing the inner limiting ball to connect with the auxiliary groove, thus providing secondary fixation for the mold structure. Attached Figure Description
[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the connection and fixing structure of this utility model; Figure 3 This is a three-dimensional structural diagram of the mounting plate of this utility model.
[0014] Figure label: 1. Equipment Structure; 101. Equipment Body; 102. Guide Groove; 103. Drive Gear; 2. Connecting and Fixing Structure; 201. Servo Motor; 202. Transmission Screw; 203. Moving Bar; 204. Tensioning Rod; 205. Slider; 206. Positioning Shaft; 207. Limiting Plate; 208. Side Bracket; 209. Gear Ring; 210. First Material Tube; 211. Limiting Ball; 3. Mold Structure; 301. Injection Mold Body; 302. Limiting Groove; 303. Second Material Tube; 304. Auxiliary Groove. Detailed Implementation
[0015] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the utility model will be more thorough and complete.
[0016] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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.
[0017] 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, "a plurality of" means two or more, unless otherwise explicitly specified.
[0018] In this utility model, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," "fixed," "provided with," and "located in" 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 according to the specific circumstances. Example
[0019] See attached document Figure 1-3 A connection structure between a plastic part production mold and equipment includes an equipment structure 1, a connection and fixing structure 2 on the top of the equipment structure 1, and a mold structure 3 on the top of the equipment structure 1. The connecting and fixing structure 2 includes a servo motor 201 and a slider 205. The slider 205 is slidably connected to both sides of the top of the equipment structure 1. A limit plate 207 is provided on one side of the slider 205, and the limit plate 207 is connected to the mold structure 3. The servo motor 201 is located inside the equipment body 101. A transmission screw 202 is provided at the output end of the servo motor 201. The threads at both ends of the transmission screw 202 have opposite directions. Moving bars 203 are provided at both ends of the transmission screw 202. Tension rods 204 are rotatably connected to both ends of the moving bar 203. A positioning shaft 206 is provided at the bottom of the slider 205, and the positioning shaft 206 is rotatably connected to the tension rods 204. The number of sliders 205 is set to four. A side bracket 208 is provided between two sliders 205. A first material tube 210 is rotatably connected inside the side bracket 208. A toothed ring 209 is provided at one end of the first material tube 210. The number of toothed rings 209 is set to multiple, and the multiple toothed rings 209 mesh with each other. One of the gear rings 209 meshes with the drive gear 103. A limit ball 211 is provided on one side of the inner wall of the first material tube 210. After the mold structure 3 is placed on top of the equipment structure 1, the servo motor 201 is started. The servo motor 201 drives the transmission screw 202 to rotate, the transmission screw 202 drives the moving bar 203 to move, the moving bar 203 drives the tension rod 204 to rotate, the tension rod 204 pulls the positioning shaft 206 to move, and the positioning shaft 206 drives the slider 205 to slide inward on the inner wall of the guide groove 102. The slider 205 drives the limiting plate 207 to insert into the limiting groove 302. The limiting plate 207 contacts the injection mold body 301 from the four corners, which can push the injection mold body 301 to move on the top of the equipment body 101, so that the mold structure 3 moves to the middle position of the equipment structure 1. At the same time, as the slider 205 moves inward, it drives the side support 208 to move inward, so that the side support 208 drives the first material tube 210 to move inward, and the outermost toothed ring 209 slides on the outer wall of the drive gear 103.
[0020] Furthermore, the equipment structure 1 includes an equipment body 101, a guide groove 102 is rotatably connected to one side of the top of the equipment body 101, and drive gears 103 are provided on both sides of the top of the equipment body 101. When it is necessary to install the mold structure 3 onto the surface of the equipment structure 1 through the connecting and fixing structure 2, it is convenient to connect the connecting and fixing structure 2 through the mold structure 3 in the future.
[0021] Furthermore, the mold structure 3 includes an injection mold body 301, which is disposed on the top of the equipment body 101. Limiting grooves 302 are formed at the four corners of the injection mold body 301. The limiting grooves 302 are fitted to the limiting plate 207. Second material tubes 303 are provided on both sides of the limiting grooves 302. An auxiliary groove 304 is formed on the outer wall of the second material tubes 303. The auxiliary groove 304 is L-shaped. The first material tube 210 is inserted into the second material tube 303. The outer wall, and the limiting ball 211 slides inside the auxiliary groove 304. A motor is installed inside the equipment body 101. The output end of the motor is connected to the drive gear 103. When the motor is started, the motor drives the drive gear 103 to rotate. The drive gear 103 drives the gear ring 209 to rotate. The gear ring 209 drives the limiting ball 211 on the inner side of the first material tube 210 to slide against the inner wall of the auxiliary groove 304. The cross section of the auxiliary groove 304 is set to L-shaped for mutual engagement between the second material tube 303 and the first material tube 210.
[0022] The above-described embodiments are merely illustrative of certain implementations of this utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A structure for connecting a molding apparatus to a molding die for a plastic product, characterized by: include The equipment structure (1) is provided with a connecting and fixing structure (2) on the top and a mold structure (3) on the top. The connecting and fixing structure (2) includes a servo motor (201) and a slider (205). The slider (205) is slidably connected to both sides of the top of the equipment structure (1). A limit plate (207) is provided on one side of the slider (205). The limit plate (207) is connected to the mold structure (3). The mold structure (3) includes an injection mold body (301), which is located on the top of the equipment body (101). Limiting grooves (302) are provided at the four corners of the injection mold body (301). The limiting grooves (302) are fitted with limiting plates (207). Second material tubes (303) are provided on both sides of the limiting grooves (302). An auxiliary groove (304) is provided on the outer wall of the second material tubes (303). The auxiliary groove (304) is L-shaped.
2. A mold and apparatus connection for a plastic part production mold as defined in claim 1, wherein: The device structure (1) includes a device body (101), a guide groove (102) is rotatably connected to one side of the top of the device body (101), and drive gears (103) are provided on both sides of the top of the device body (101).
3. The mold and apparatus connection structure for a plastic part according to claim 1, wherein: The servo motor (201) is located inside the device body (101). The output end of the servo motor (201) is provided with a transmission screw (202). The threads at both ends of the transmission screw (202) are opposite. The two ends of the transmission screw (202) are provided with moving bars (203). The two ends of the moving bars (203) are rotatably connected with tension rods (204).
4. The mold and apparatus connection structure for a plastic part according to claim 1, wherein: The bottom of the slider (205) is provided with a positioning shaft (206), which is rotatably connected to the tension rod (204), and the number of sliders (205) is set to four.
5. The mold and apparatus connection structure for a plastic part according to claim 1, wherein: A side support (208) is provided between the two sliders (205). A first material tube (210) is rotatably connected inside the side support (208). A toothed ring (209) is provided at one end of the first material tube (210). The number of toothed rings (209) is set to multiple. The multiple toothed rings (209) mesh with each other. One toothed ring (209) meshes with the drive gear (103). A limit ball (211) is provided on one side of the inner wall of the first material tube (210).