A mold locking structure for injection molding machine

Abstract

The utility model discloses a production injection molding machine mould locking structure relates to injection mould technical field. The utility model discloses a mould body, and the mould body includes fixed mode, and the right wall of fixed mode is equipped with the removal mode, and the inside of the slot is inserted with the plug -in strip of left wall length greater than right wall length, and the upper portion of rectangular sheet is equipped with pressure sensor, and the connecting strip of the clearance cooperation of the removal mode is included to the removal mode, and the inside of the recess is equipped with the push plate fixed with connecting strip, and the right -hand member of connecting strip is equipped with the removal strip of left wall length greater than right wall length fixedly, and the lower portion of removal strip is equipped with the vertical board of left wall length less than right wall length, and the lower portion of vertical board is equipped with electric telescopic handle. The utility model discloses a pressure sensor detects the pressure and makes controller control hydraulic cylinder stop working, makes the removal mode be in proper die closing position, and through vertical board, makes the removal strip removal drive push plate left and removes injection molding piece from injection molding groove, need not manual removal injection molding piece.

Description

Technical Field

[0001] This utility model belongs to the field of injection mold technology, and in particular relates to a locking structure for injection molding machine molds used in production. Background Technology

[0002] Injection molding machine molds are tools used for injection molding and are widely used in the manufacturing of plastic products. Their main function is to inject plastic material into the mold cavity after heating and melting, cool and solidify, and finally obtain the desired plastic product. During injection, the moving mold moves and the fixed mold closes under the operation of the hydraulic cylinder. The injection molding machine injects the injection material into the injection tank. After solidification and cooling, the moving mold moves and the injection molded part is removed to complete a single injection cycle.

[0003] A search revealed that authorization announcement number CN221562090U, with an authorization announcement date of August 20, 2024, discloses a mold-locking structure for an injection molding machine. The structure includes an injection molding table with two vertically arranged support plates on its left and right sides. A left mold is fixedly mounted on the side of the left support plate corresponding to the right support plate. A right mold is movably mounted between the two support plates. A movable plate is fixedly mounted on the right side of the right mold. A driving structure is provided on the side of the right support plate corresponding to the left support plate, and the driving structure is driven and connected to the movable plate. Locking structures are provided at the upper and lower ends of the right mold, and are slidably connected to the upper and lower ends of the movable plate. The locking structures are also movably connected to the two support plates. The driving structure drives the right mold to fit against the left mold for injection molding. After fitting, the locking structure locks the movable plate, preventing thermal expansion of the material and ensuring a tight fit between the left and right molds, thus guaranteeing the quality of the injection-molded product.

[0004] Existing technology uses a hydraulic cylinder to move the right mold to a suitable position, and then a drive motor rotates a rotating rod to lock the movable plate into the locking groove. However, in actual use, excessive extension of the hydraulic cylinder's movable end can cause excessive pressure on the mold and damage it, while insufficient extension can prevent normal mold closing, making it inconvenient to use. Furthermore, existing technology requires manual removal of the material after injection molding, posing significant safety hazards and increasing the labor intensity of workers. Therefore, we provide a mold locking structure for injection molding machines used in production to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a mold locking structure for injection molding machines used in production. The pressure sensor detects the pressure and causes the controller to stop the hydraulic cylinder. The vertical plate moves the moving bar, which in turn moves the push plate to the left to push the molded part out of the injection groove. This solves the problems of the prior art, which causes excessive mold pressure and damage when the moving end of the hydraulic cylinder is overextended, and causes the mold to fail to close properly when the moving end of the hydraulic cylinder is underextended. This is inconvenient to use. In addition, the prior art requires manual operation to remove the material after injection molding, which poses a significant safety hazard and increases the labor intensity of workers.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model relates to a locking structure for an injection molding machine mold used in production. It includes a mold body comprising a fixed mold, a movable mold on the right wall of the fixed mold, an injection groove on the left wall of the movable mold, and slots symmetrically formed on the front and rear side walls of the movable mold. Inserts with a left wall length greater than the right wall length are inserted into the slots. A rectangular plate fixed to the fixed mold is fitted to the outside of the inserts with a clearance fit. A pressure sensor is located above the rectangular plate. A discharge mechanism includes a connecting strip that penetrates the movable mold and has a clearance fit. A groove is formed on the movable mold corresponding to the left end of the connecting strip. A push plate fixed to the connecting strip is located inside the groove. A movable strip with a left wall length greater than the right wall length is fixed to the right end of the connecting strip. A vertical plate with a left wall length less than the right wall length is located below the movable strip. An electric telescopic rod is located below the vertical plate.

[0008] The present invention is further configured such that an injection hole is provided through the fixed mold, and positioning rods that are fitted with the moving mold are fixed at the four corners of the right wall of the fixed mold.

[0009] The present invention is further configured such that a left side plate fixed to the fixed mold is fixed on the left wall of the pressure sensor, and a right side plate fixed to the moving mold is provided on the right side of the pressure sensor.

[0010] The present invention is further configured such that the outer wall of the rectangular plate is provided with a baffle fixed to the insert, the outer wall of the baffle is provided with a spring sleeved on the outside of the insert, and the outer end of the spring is provided with an L-shaped plate that is gap-fitted with the insert and fixed to the rectangular plate.

[0011] The present invention is further configured such that a second spring is provided on the right side of the movable mold and sleeved on the outside of the connecting strip, and a round rod fixed to the movable mold is provided in the internal gap of the movable strip.

[0012] The present invention is further configured such that a U-shaped mounting bracket is fixedly provided on the right wall of the movable mold, a hydraulic cylinder is fixedly provided on the right wall of the mounting bracket, an L-shaped fixing bracket is fixedly provided on the right end of the hydraulic cylinder, and reinforcing plates fixed to the fixing bracket are symmetrically provided on the front and rear sides below the hydraulic cylinder.

[0013] The present invention is further configured such that a U-shaped movable frame is provided on the lower side of the movable mold, and inclined surfaces are symmetrically opened on the top of the front and rear ends of the movable frame. Guide rods are fixed on both the front and rear ends of the lower wall of the movable frame, and guide sleeves that are fixed to the fixed frame are provided on the outer side of the guide rods with clearance fit.

[0014] The present invention is further provided with a protruding strip fixed to the right wall of the movable frame and fixed to the vertical plate.

[0015] The present invention is further provided with mounting blocks fixed to the insert strips at the top of both the front and rear ends of the movable frame, and rollers rotatably connected to the lower end of the mounting blocks.

[0016] This utility model has the following beneficial effects:

[0017] 1. This utility model, by setting a pressure sensor, causes the movable end of the hydraulic cylinder to extend, moving the moving mold closer to the fixed mold. At this time, the right side plate moves towards the pressure sensor. When the moving mold and the fixed mold are in contact, the right side plate contacts the pressure sensor. The pressure sensor sends an electrical signal to the controller, and the controller controls the hydraulic cylinder to stop working. The above setting can avoid the situation of excessive extension or insufficient extension distance of the movable end of the hydraulic cylinder. It solves the problem in the prior art that when the movable end of the hydraulic cylinder extends too much, the mold pressure is too high and damaged, and when the extension distance of the movable end of the hydraulic cylinder is insufficient, the mold cannot be closed normally, resulting in inconvenience in use.

[0018] 2. This utility model, by setting up a vertical plate and a moving bar, allows the moving mold to move to the right until it separates from the fixed mold. Then, the electric telescopic rod extends and drives the moving frame to move upward, causing the vertical plate to move upward. This drives the moving bar to move to the left, which in turn drives the push plate to move to the left, pushing the injection molded part out of the injection molded tank. This achieves automatic material discharge without the need for manual removal of the injection molded part. It solves the problem that the existing technology requires manual operation to remove the material after injection molding, which poses a significant safety hazard and increases the labor intensity of workers. Attached Figure Description

[0019] 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.

[0020] Figure 1 This is an overall structural diagram of a locking structure for an injection molding machine mold used in production.

[0021] Figure 2 This is a structural diagram of the mold body.

[0022] Figure 3 This is an exploded structural diagram of the mold body.

[0023] Figure 4 for Figure 3 Partial structural diagram.

[0024] Figure 5 This is a diagram showing the connection structure between the moving mold and the material feeding mechanism.

[0025] Figure 6 for Figure 5 Another perspective on the structure.

[0026] Figure 7 for Figure 5 An exploded view of the middle part of the structure.

[0027] The attached diagram lists the components represented by each number as follows:

[0028] 1-Mold body, 101-Fixed mold, 101a-Positioning rod, 101b-Left side plate, 101c-Rectangular plate, 102-Moving mold, 102a-Right side plate, 102b-Injection groove, 102c-Groove, 102d-Slot, 103-Pressure sensor, 104-Insertion bar, 104a-L-shaped plate, 104b-Spring 1, 104c-Baffle, 2-Discharge mechanism, 201- Hydraulic cylinder, 201a-mounting bracket, 202-vertical plate, 203-electric telescopic rod, 204-fixed bracket, 204a-reinforcing plate, 204b-guide sleeve, 205-moving frame, 205a-guide rod, 205b-protruding strip, 206-mounting block, 206a-roller, 207-moving bar, 207a-round rod, 208-connecting bar, 208a-push plate, 208b-spring two. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0030] Example 1

[0031] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4This is the first embodiment of the present invention, which provides a locking structure for a production injection molding machine mold, including a mold body 1. The mold body 1 includes a fixed mold 101, which is fixed to the discharge end of the injection molding machine. A movable mold 102 is provided on the right wall of the fixed mold 101. In the injection state, the right wall of the fixed mold 101 is in contact with the left wall of the movable mold 102. An injection groove 102b is provided on the left wall of the movable mold 102. Slots 102d are symmetrically provided on the front and rear side walls of the movable mold 102. Inserts with a length greater than the length of the right wall are inserted into the slots 102d. 104, so that one end of the insert 104 inside the slot 102d is inclined. With the setting of this inclined surface, during the process of the moving mold 102 moving to the left and fitting with the fixed mold 101, the insert 104 can be smoothly fitted with the fixed mold 101 without manual operation to move it away from the fixed mold 101. The outer gap of the insert 104 is fitted with a rectangular plate 101c fixed with the fixed mold 101. A pressure sensor 103 is provided above the rectangular plate 101c. The pressure detection side of the pressure sensor 103 is on the right, so that the pressure from the right side plate 102a can be detected.

[0032] Specifically, the fixed mold 101 has a through injection hole that communicates with the injection groove 102b, so that when the injection molding machine is working, the injection material passes through the injection hole and enters the injection groove 102b. The four corners of the right wall of the fixed mold 101 are all fixed with positioning rods 101a that are in clearance fit with the moving mold 102, so that the moving mold 102 can only move in the left and right directions.

[0033] The left side of the pressure sensor 103 is fixed with a left side plate 101b that is fixed to the fixed mold 101, providing a fixed platform for the pressure sensor 103. The right side of the pressure sensor 103 is provided with a right side plate 102a that is fixed to the moving mold 102. When the right side plate 102a moves to apply a force to the pressure sensor 103, the moving mold 102 and the fixed mold 101 are in a close fit.

[0034] The outer wall of the rectangular plate 101c is provided with a baffle 104c fixed to the insert 104. The outer wall of the baffle 104c is provided with a spring 104b sleeved on the outside of the insert 104. The outer end of the spring 104b is provided with an L-shaped plate 104a that is clearance-fitted with the insert 104 and fixed to the rectangular plate 101c. The two ends of the spring 104b abut against the rectangular plate 101c and the L-shaped plate 104a respectively. With the above arrangement, the spring 104b applies a force to the baffle 104c, so that under normal conditions, the inner end of the insert 104 is always in the slot 102d, thereby locking the moving mold 102.

[0035] The operation process of this embodiment is as follows: When the movable mold 102 is separated from the fixed mold 101, the hydraulic cylinder 201 extends and drives the movable mold 102 to approach the fixed mold 101 until the right side plate 102a contacts the detection surface of the pressure sensor 103. Then, the pressure sensor 103 sends an electrical signal to the controller. At this time, the controller controls the hydraulic cylinder 201 to stop working. In this state, the movable mold 102 and the fixed mold 101 are in a close fit. The injection molding machine is operated to make the injection material pass through the injection hole and enter the injection tank 102b for injection molding operation.

[0036] Example 2

[0037] Please see Figure 1 , Figure 3 , Figure 5 , Figure 6 and Figure 7 This is the second embodiment of the present invention. This embodiment is based on the previous embodiment, but differs from the first embodiment in that: the material discharge mechanism 2 includes a connecting strip 208 that passes through the movable mold 102 and is in clearance fit with the movable mold 102. A groove 102c is provided on the movable mold 102 corresponding to the left end of the connecting strip 208. A push plate 208a fixed to the connecting strip 208 is provided inside the groove 102c. The left wall of the push plate 208a and the right end of the injection groove 102b corresponding to the position of the movable mold 102 are on the same vertical plane. A movable strip 207 with a left wall length greater than the right wall length is fixed on the right end of the connecting strip 208. A vertical plate 202 with a left wall length less than the right wall length is provided below the movable strip 207. The lower end of the movable strip 207 and the upper end of the vertical plate 202 are both inclined surfaces. The inclined surfaces are used to push the movable strip 207 to the left when the vertical plate 202 moves upward. An electric telescopic rod 203 is provided below the vertical plate 202 to drive the movable frame 205 and the vertical plate 202 to move up and down respectively.

[0038] Specifically, a spring 208b is provided on the right side of the moving mold 102 and sleeved on the outside of the connecting strip 208. The two ends of the spring 208b abut against the moving mold 102 and the moving strip 207 respectively, so that the push plate 208a is always inside the groove 102c under normal conditions. A round rod 207a fixed to the moving mold 102 is provided in the internal gap of the moving strip 207, so that the moving strip 207 can only move in the left and right directions.

[0039] The right wall of the movable mold 102 is fixed with a U-shaped mounting bracket 201a, the right wall of the mounting bracket 201a is fixed with a hydraulic cylinder 201, the right end of the hydraulic cylinder 201 is fixed with an L-shaped fixing bracket 204, and the front and rear sides below the hydraulic cylinder 201 are symmetrically provided with reinforcing plates 204a fixed to the fixing bracket 204 to improve the structural stability of the fixing bracket 204. With the above configuration, when the hydraulic cylinder 201 works, it drives the mounting bracket 201a to move, thereby causing the movable mold 102 to move.

[0040] The lower side of the movable mold 102 is provided with a U-shaped movable frame 205. The top of the front and rear ends of the movable frame 205 are symmetrically provided with inclined surfaces. The front and rear ends of the lower wall of the movable frame 205 are both fixed with guide rods 205a. The guide rods 205a are fitted with guide sleeves 204b that are fixed to the fixed frame 204. The cooperation between the guide rods 205a and the guide sleeves 204b allows the movable frame 205 to move only up and down.

[0041] The right wall of the movable frame 205 is fixed with a protrusion 205b that is fixed to the vertical plate 202;

[0042] Mounting blocks 206 fixed to insert strips 104 are provided on the upper part of both the front and rear ends of the movable frame 205. Rollers 206a are rotatably connected to the lower end of the mounting blocks 206. When the movable frame 205 moves upward, the rollers 206a move on the inclined surface in the movable frame 205, driving the mounting blocks 206 to move away from the movable mold 102.

[0043] The operation process in this embodiment is as follows: When removing the injection molded part, the electric telescopic rod 203 is first extended to drive the movable frame 205 to rise. Under the action of the inclined surface on the movable frame 205 and the roller 206a, the movable frame 205 rises and drives the mounting block 206 to move away from the movable mold 102, thereby driving the insert 104 to move away from the movable mold 102 and disengage from the slot 102d, so as to release the locking state between the fixed mold 101 and the movable mold 102. At this time, the movable end of the hydraulic cylinder 201 moves to the right, driving the movable mold 102 to the right. The electric telescopic rod 203 extends until the moving bar 207 moves above the vertical plate 202. Then, the electric telescopic rod 203 continues to extend, causing the vertical plate 202 to move upward. Under the combined action of the inclined surface in the vertical plate 202 and the inclined surface in the moving bar 207, the moving bar 207, the connecting bar 208 and the push plate 208a all move to the left, causing the injection molded part in the injection molded groove 102b to separate from the injection molded groove 102b, thus completing the operation of removing the injection molded part. Then, the electric telescopic rod 203 retracts, causing the moving frame 205 and the vertical plate 202 to move downward, and the mold is closed again for injection molding.

[0044] It should be noted that the hydraulic cylinder 201, electric telescopic rod 203, and pressure sensor 103 in the mold locking structure of the injection molding machine used in this production are all connected to the controller in a conventional manner, and the hydraulic cylinder 201, electric telescopic rod 203, pressure sensor 103 and controller are all existing technologies, and their models are not limited here.

[0045] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. A mold locking structure for injection molding machines for producing, comprising a mold body (1), characterized in that: The mold body (1) includes a fixed mold (101), a movable mold (102) is provided on the right wall of the fixed mold (101), an injection groove (102b) is provided on the left wall of the movable mold (102), slots (102d) are symmetrically provided on the front and rear side walls of the movable mold (102), a strip (104) with a left wall length greater than the right wall length is inserted into the slot (102d), a rectangular plate (101c) fixed to the fixed mold (101) is provided with a clearance fit on the outside of the strip (104), and a pressure sensor (103) is provided above the rectangular plate (101c); The material discharge mechanism (2) includes a connecting strip (208) that passes through the moving mold (102) and is in clearance fit with the moving mold (102). A groove (102c) is provided on the moving mold (102) corresponding to the left end of the connecting strip (208). A push plate (208a) fixed to the connecting strip (208) is provided inside the groove (102c). A moving strip (207) with a left wall length greater than the right wall length is fixed on the right end of the connecting strip (208). A vertical plate (202) with a left wall length less than the right wall length is provided below the moving strip (207). An electric telescopic rod (203) is provided below the vertical plate (202).

2. A mold locking structure for injection molding machines as defined in claim 1, wherein: The fixed mold (101) has a through injection hole, and the four corners of the right wall of the fixed mold (101) are all fixed with positioning rods (101a) that are clearance-fitted with the moving mold (102).

3. The locking structure for an injection molding machine mold used in production according to claim 1, characterized in that: The pressure sensor (103) has a left side plate (101b) fixed to the fixed mold (101) on its left side wall, and a right side plate (102a) fixed to the moving mold (102) on its right side.

4. The locking structure for an injection molding machine mold used in production according to claim 1, characterized in that: The outer wall of the rectangular plate (101c) is provided with a baffle (104c) fixed to the insert (104). The outer wall of the baffle (104c) is provided with a spring (104b) sleeved on the outside of the insert (104). The outer end of the spring (104b) is provided with an L-shaped plate (104a) that is clearance-fitted with the insert (104) and fixed to the rectangular plate (101c).

5. The locking structure for an injection molding machine mold used in production according to claim 1, characterized in that: The right side of the movable mold (102) is provided with a spring (208b) sleeved on the outside of the connecting strip (208), and the inner gap of the movable strip (207) is provided with a round rod (207a) fixed to the movable mold (102).

6. The locking structure for an injection molding machine mold used in production according to claim 5, characterized in that: The right wall of the movable mold (102) is fixed with a U-shaped mounting bracket (201a), and the right wall of the mounting bracket (201a) is fixed with a hydraulic cylinder (201). The right end of the hydraulic cylinder (201) is fixed with an L-shaped fixing bracket (204). The front and rear sides below the hydraulic cylinder (201) are symmetrically provided with reinforcing plates (204a) that are fixed to the fixing bracket (204).

7. The locking structure for an injection molding machine mold used in production according to claim 1, characterized in that: The lower side of the movable mold (102) is provided with a U-shaped movable frame (205). The top of the front and rear ends of the movable frame (205) are symmetrically provided with inclined surfaces. The front and rear ends of the lower wall of the movable frame (205) are both fixed with guide rods (205a). The guide rods (205a) are provided with guide sleeves (204b) that are fixed to the fixed frame (204) with a clearance fit on the outside.

8. The locking structure for an injection molding machine mold used in production according to claim 7, characterized in that: The lower end of the right wall of the movable frame (205) is fixed with a protrusion (205b) that is fixed to the vertical plate (202).

9. A locking structure for an injection molding machine mold used in production, as described in claim 8, characterized in that: The movable frame (205) has mounting blocks (206) fixed to the insert (104) at both ends above the front and rear ends. The lower end of the mounting block (206) is rotatably connected to a roller (206a).

Images