Inner shaft core injection mold capable of adjusting core pulling distance

Abstract

The utility model relates to the technical field of molds, and discloses an inner shaft core injection mold with adjustable core-pulling distance, which comprises a shaft core mechanism and a core-pulling mechanism, the shaft core mechanism comprises a first mold core and a positioning ejector pin, an adjusting inner groove is arranged in the first mold core close to the middle, a lifting sliding block is arranged in the adjusting inner groove in a sliding manner, and the positioning ejector pin is arranged in the lifting sliding block. The core pulling mechanism comprises a first mold core, a lifting sliding block is fixedly arranged at the upper end of the first mold core, an adjusting bearing is fixedly arranged at the front end of the lifting sliding block, a positioning block is fixedly arranged at the lower end of the lifting sliding block, and a movable sliding strip is slidably arranged at the lower end in the first mold core. And adjusting columns are arranged in the two fixing sleeves in a sliding manner. According to the core pulling mechanism, the length of the upper sliding block and the length of the lower sliding block can be changed through driving of the adjusting lead screw, so that the core pulling mechanism can be matched with shaft core mechanisms of different models, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to an inner shaft core injection mold with adjustable core pulling distance. Background Art

[0002] An inner core injection mold is a mold used to produce hollow or internally structured plastic products. It usually includes an adjustable core-pulling distance mechanism to adjust the position of the internal core shaft to accommodate products of different sizes and shapes. This mold usually consists of an upper mold with an internal core shaft installed and a lower mold with the external structure of the mold installed. When the plastic material is injected into the mold, the internal core shaft automatically adjusts its position according to the shape and size of the product to ensure that the internal cavity or structure of the product is correctly formed. The inner core injection mold with adjustable core-pulling distance has the advantages of high flexibility and high production efficiency. It is suitable for the production of various hollow or internally structured plastic products, such as bottles, boxes, pipes, etc. It has a wide range of applications in the plastic product production industry.

[0003] In the prior art, shaft cores with various sizes and shapes are usually arranged in the mold to form a mold with the internal cavity and structure. Such shaft cores often need to be used in conjunction with corresponding core-pulling structures to avoid some special-shaped molds being unable to discharge materials. Then, there are many types of molds, and the corresponding shaft cores are also relatively numerous, and then the corresponding core-pulling structures are also relatively numerous, which will lead to an increase in production costs. Therefore, the utility model provides an inner shaft core injection mold with adjustable core-pulling distance to solve the problems raised in the above-mentioned background technology. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose an inner shaft core injection mold with an adjustable core pulling distance. The length of the upper slider and the lower slider can be changed by adjusting the drive of the screw rod, so that the core pulling mechanism can be adapted to different types of shaft core mechanisms, thereby reducing production costs.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An inner shaft core injection mold with adjustable core pulling distance, comprising a shaft core mechanism and a core pulling mechanism, the shaft core mechanism comprising a first mold core and a positioning ejector pin, an adjusting inner groove is provided in the middle of the first mold core, a lifting slider is slidably arranged in the adjusting inner groove, an adjusting bearing is fixedly arranged at the front end of the lifting slider, a positioning block is fixedly arranged at the lower end of the lifting slider, and a moving slide bar is slidably arranged at the lower end of the first mold core;

[0007] The core pulling mechanism comprises a second mold core, wherein a fixing sleeve is fixedly arranged on the upper and lower sides of the second mold core, and an adjusting column is slidably arranged inside the two fixing sleeves, and an upper slider and a lower slider are fixedly arranged on one side of the two adjusting columns, respectively, and an adjusting slide groove is opened inside the opposite side of the two adjusting columns, and a connecting frame is slidably arranged between the two adjusting slide grooves, and an adjusting screw rod is arranged on the threaded sleeve inside the connecting frame;

[0008] Through the above technical scheme, the injection mold pulls out the core pulling mechanism from the inside of the shaft core mechanism after the injection molding is completed and drives the lifting slider and the positioning block to move, thereby changing the internal structural layout of the shaft core mechanism, facilitating the removal of the workpiece after molding, and the length of the upper slider and the lower slider in the core pulling mechanism is adjustable, so that the core pulling mechanism can be adapted to various types of shaft core mechanisms, reducing production costs.

[0009] Further, a positioning inner groove is provided at the lower end of the first mold core, a positioning spring is fixedly provided at one side of the positioning inner groove, a movable plate is fixedly provided at one side of the positioning spring, the movable plate is horizontally slidably provided inside the positioning inner groove, and the positioning ejector pin is fixedly provided at the middle of one side of the movable plate;

[0010] Through the above technical solution, the positioning spring can push the movable plate and the positioning ejector to move, so that the positioning ejector can move horizontally inside the first mold core.

[0011] Furthermore, a clamping groove is provided on one side of the positioning block, and the positioning ejector pin is clamped and arranged inside the clamping groove;

[0012] Through the above technical solution, the positioning pin can be inserted into the inside of the snap-in groove, so that the position of the positioning block can be fixed. At the same time, the snap-in groove has a certain inclination angle, so that the positioning pin can be easily moved out of the inside of the snap-in groove, which facilitates the change of the position of the positioning block.

[0013] Furthermore, an upper core-pulling opening is opened at the top of the first mold core, and the upper slider is slidably disposed inside the upper core-pulling opening; a lower core-pulling opening is opened at the bottom of the first mold core, and the lower slider is slidably disposed inside the lower core-pulling opening;

[0014] Through the above technical solution, the upper slider and the lower slider can be moved from the inside of the upper core-pulling opening and the lower core-pulling opening respectively, thereby facilitating access to the adjustment bearing to change the position of the lifting slider.

[0015] Furthermore, the adjusting screw rod is rotatably arranged at the middle of one side of the second mold core near one end of the second mold core, and the other end of the adjusting screw rod is fixedly provided with an adjusting handle;

[0016] Through the above technical solution, the adjusting handle can easily drive the adjusting screw to rotate, and then the connecting frame can be driven to move by the rotation of the adjusting screw, and finally the length of the upper slider and the lower slider can be changed.

[0017] Furthermore, one side of the two adjusting columns is threaded with a positioning handle, and one end of the two positioning handles is respectively set to one side of the connecting frame;

[0018] Through the above technical solution, the connecting frame and the adjusting column can be separated by rotating the positioning handle, and then the lengths of the upper slider and the lower slider can be changed independently, thereby improving the adjustability of the core pulling mechanism.

[0019] The utility model has the following beneficial effects:

[0020] 1. The utility model proposes an inner shaft core injection mold with an adjustable core pulling distance. When the injection mold moves inside the shaft core mechanism through the core pulling mechanism arranged inside, the upper slider and the lower slider can respectively move the adjusting bearing in the up and down directions, thereby driving the positioning block to move, so that the pressed workpiece can be easily taken out after being restricted by the positioning block to form a groove, thereby improving work efficiency.

[0021] 2. The utility model proposes an inner shaft core injection mold with adjustable core pulling distance. The injection mold is provided with two adjusting columns on the core pulling mechanism and is correspondingly connected to the upper slider and the lower slider, so that the length of the upper slider and the lower slider can be changed under the drive of the adjusting screw rod, so that the core pulling mechanism can be adapted to shaft core mechanisms of different types, thereby reducing the production cost. At the same time, positioning handles are also provided on the two adjusting columns to limit the position of the connecting frame, so that the connecting frame and the adjusting column can be separated by rotating the positioning handle, and then the length of the upper slider and the lower slider can be changed separately, thereby improving the adjustability of the core pulling mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the axial side of the utility model;

[0023] Figure 2 It is a schematic diagram of the cross-section of the shaft core mechanism of the utility model;

[0024] Figure 3 It is a schematic diagram of the cross-section of the shaft core mechanism of the utility model near the limit column;

[0025] Figure 4 This is a schematic diagram of the axial side of the core pulling mechanism of the utility model;

[0026] Figure 5 For this utility model Figure 3 An enlarged schematic diagram of point A.

[0027] Legend:

[0028] 1. Axis core mechanism; 2. Core pulling mechanism; 101. First mold core; 102. Lifting slider; 103. Adjusting bearing; 104. Positioning spring; 105. Moving plate; 106. Positioning block; 107. Moving slide bar; 108. Adjusting inner groove; 109. Upper core pulling opening; 110. Lower core pulling opening; 111. Positioning ejector pin; 112. Positioning inner groove; 113. Clamping groove; 201. Upper slider; 202. Lower slider; 203. Second mold core; 204. Fixed sleeve; 205. Adjusting column; 206. Connecting frame; 207. Adjusting screw rod; 208. Adjusting handle; 209. Adjusting slide groove; 210. Positioning handle. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] The utility model provides an embodiment: an inner shaft core injection mold with adjustable core pulling distance, comprising a shaft core mechanism 1 and a core pulling mechanism 2, referring to Figure 1-3 5, the shaft core mechanism 1 includes a first mold core 101 and a positioning ejector pin 111, an adjusting inner groove 108 is opened in the middle of the first mold core 101, a lifting slider 102 is slidably arranged in the adjusting inner groove 108, an adjusting bearing 103 is fixedly arranged at the front end of the lifting slider 102, a positioning block 106 is fixedly arranged at the lower end of the lifting slider 102, and a moving slide bar 107 is slidably arranged at the lower end of the first mold core 101;

[0031] Specifically, in the above-mentioned specific embodiment, the lifting slider 102 can be driven to move up and down by adjusting the up and down movement of the bearing 103, so that the lifting slider 102 can limit the pressed workpiece to form a groove, and can be moved out from the inside of the groove after being driven, which facilitates removal and improves work efficiency.

[0032] A positioning inner groove 112 is provided at the lower end of the first mold core 101, a positioning spring 104 is fixedly provided on one side of the positioning inner groove 112, a movable plate 105 is fixedly provided on one side of the positioning spring 104, the movable plate 105 is horizontally slidably provided inside the positioning inner groove 112, a positioning ejector pin 111 is fixedly provided at the middle of one side of the movable plate 105, a clamping groove 113 is provided on one side of the positioning block 106, and the positioning ejector pin 111 is clamped and provided inside the clamping groove 113;

[0033] Specifically, in the above specific embodiment, the positioning spring 104 can push the movable plate 105 and the positioning ejector pin 111 to move, so that the positioning ejector pin 111 can move horizontally inside the first mold core 101, and the positioning ejector pin 111 can be inserted into the inside of the clamping groove 113, so that the position of the positioning block 106 can be fixed. At the same time, the clamping groove 113 has a certain inclination angle, so that the positioning ejector pin 111 can be easily moved out from the inside of the clamping groove 113, which facilitates the change of the position of the positioning block 106.

[0034] Reference Figure 4 The core pulling mechanism 2 includes a second mold core 203, a fixed sleeve 204 is fixedly provided inside the second mold core 203, and an adjusting column 205 is slidably provided inside the two fixed sleeves 204. An upper slider 201 and a lower slider 202 are fixedly provided on one side of the two adjusting columns 205, respectively. An adjusting slide groove 209 is provided inside the opposite side of the two adjusting columns 205, and a connecting frame 206 is slidably provided between the two adjusting slide grooves 209. An adjusting screw rod 207 is threadedly sleeved inside the connecting frame 206. The adjusting screw rod 207 is rotatably provided at one end of the second mold core 203 and is arranged in the middle of one side of the second mold core 203. An adjusting handle 208 is fixedly provided at the other end of the adjusting screw rod 207. A positioning handle 210 is threadedly provided on one side of the two adjusting columns 205, and one end of the two positioning handles 210 is respectively provided to one side of the connecting frame 206.

[0035] Specifically, in the above-mentioned specific embodiment, the adjusting handle 208 can be used to drive the adjusting screw rod 207 to rotate, and then the connecting frame 206 can be moved by the rotation of the adjusting screw rod 207, and finally the length of the upper slider 201 and the lower slider 202 can be changed, and the adjusting handle 208 can conveniently drive the adjusting screw rod 207 to rotate, and then the connecting frame 206 can be moved by the rotation of the adjusting screw rod 207, and finally the length of the upper slider 201 and the lower slider 202 can be changed, and the positioning handle 210 can be rotated to separate the connecting frame 206 from the adjusting column 205, and then the length of the upper slider 201 and the lower slider 202 can be changed separately, thereby improving the adjustability of the core pulling mechanism 2.

[0036] An upper core-pulling opening 109 is provided at the upper part of the first mold core 101, and an upper slider 201 is slidably arranged inside the upper core-pulling opening 109. A lower core-pulling opening 110 is provided at the lower part of the first mold core 101, and a lower slider 202 is slidably arranged inside the lower core-pulling opening 110, so that the upper slider 201 and the lower slider 202 can be moved from the upper core-pulling opening 109 and the lower core-pulling opening 110 respectively, thereby facilitating contact with the adjusting bearing 103 to change the position of the lifting slider 102.

[0037] Finally, the injection mold is changed by pulling out the core pulling mechanism 2 from the inside of the shaft core mechanism 1 after the injection molding is completed, and driving the lifting slider 102 and the positioning block 106 to move, thereby changing the internal structural layout of the shaft core mechanism 1, which facilitates the removal of the workpiece after molding, and the length of the upper slider 201 and the lower slider 202 in the core pulling mechanism 2 is adjustable, so that the core pulling mechanism 2 can be adapted to various models of shaft core mechanisms 1, reducing the production cost.

[0038] Working principle: During the injection molding process, the injection mold first controls the shaft core mechanism 1 to move toward the inside of the core pulling mechanism 2. During the movement, the slider 107 is first moved out of the first mold core 101. Then the upper slider 201 pushes the adjustment bearing 103 downward, thereby driving the positioning block 106 to move downward, and at the same time, the positioning ejector pin 111 is inserted into the inside of the clamping groove 113. Then, the shaft core mechanism 1 and the core pulling mechanism 2 are fitted together to start injection molding. After the injection molding is completed, the shaft core mechanism 1 is controlled to return to its original position again. When resetting, the second slider drives the adjustment bearing 103 upward, thereby driving When the positioning block 106 moves upward and is positioned by the positioning pin 111, the processed workpiece can be taken out smoothly. When the core pulling mechanism 2 is adapted to different types of shaft core mechanisms 1, the adjusting handle 208 can be used to drive the adjusting screw 207 to rotate, and then the connecting frame 206 can be driven to move by the rotation of the adjusting screw 207, and finally the length of the upper slider 201 and the lower slider 202 can be changed, and the positioning handle 210 can be rotated to separate the connecting frame 206 from the adjusting column 205, and then the length of the upper slider 201 and the lower slider 202 can be changed separately.

[0039] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An inner shaft core injection mold with adjustable core pulling distance, comprising a shaft core mechanism (1) and a core pulling mechanism (2), characterized in that: The shaft core mechanism (1) comprises a first mold core (101) and a positioning ejector pin (111); an adjusting inner groove (108) is provided in the middle of the first mold core (101); a lifting slider (102) is slidably arranged in the adjusting inner groove (108); an adjusting bearing (103) is fixedly arranged at the front end of the lifting slider (102); a positioning block (106) is fixedly arranged at the lower end of the lifting slider (102); and a moving slide bar (107) is slidably arranged in the lower end of the first mold core (101); The core pulling mechanism (2) comprises a second mold core (203), wherein a fixing sleeve (204) is fixedly arranged at the upper and lower sides of the second mold core (203), and an adjusting column (205) is slidably arranged inside the two fixing sleeves (204), and an upper slider (201) and a lower slider (202) are fixedly arranged on one side of the two adjusting columns (205), respectively, and an adjusting slide groove (209) is opened inside the opposite side of the two adjusting columns (205), and a connecting frame (206) is slidably arranged between the two adjusting slide grooves (209), and an adjusting screw rod (207) is provided in the internal thread sleeve of the connecting frame (206).

2. The inner shaft core injection mold with adjustable core pulling distance according to claim 1, characterized in that: A positioning inner groove (112) is provided inside the first mold core (101) near the lower end, a positioning spring (104) is fixedly arranged on one side of the positioning inner groove (112), a movable plate (105) is fixedly arranged on one side of the positioning spring (104), the movable plate (105) is slidably arranged in the horizontal direction inside the positioning inner groove (112), and the positioning ejector pin (111) is fixedly arranged in the middle of one side of the movable plate (105).

3. The inner shaft core injection mold with adjustable core pulling distance according to claim 1, characterized in that: A clamping groove (113) is provided on one side of the positioning block (106), and the positioning ejector pin (111) is clamped inside the clamping groove (113).

4. The inner shaft core injection mold with adjustable core pulling distance according to claim 1, characterized in that: An upper core-pulling opening (109) is opened at the top inside the first mold core (101), and the upper slider (201) is slidably arranged inside the upper core-pulling opening (109). A lower core-pulling opening (110) is opened at the bottom inside the first mold core (101), and the lower slider (202) is slidably arranged inside the lower core-pulling opening (110).

5. The inner shaft core injection mold with adjustable core pulling distance according to claim 1, characterized in that: The adjusting screw rod (207) is rotatably arranged at the middle of one side of the second mold core (203) at one end close to the second mold core (203), and an adjusting handle (208) is fixedly arranged at the other end of the adjusting screw rod (207).

6. The inner shaft core injection mold with adjustable core pulling distance according to claim 1, characterized in that: One side of the two adjustment columns (205) is provided with a positioning handle (210) threadedly penetrated therethrough, and one end of the two positioning handles (210) is respectively provided on one side of the connection frame (206).

Images