Structure for enabling front mold insert to penetrate through rear mold sliding block protection rod
By designing a protective rod structure with a smaller angle than the insert seal, the problem of collision between the front mold insert and the rear mold slide in the prior art is solved, effectively protecting the sealing surface, reducing maintenance costs and simplifying mold movements.
Patent Information
- Application Number
- CN202420797992.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-17
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-04-17
AI Technical Summary
When the mold opening and closing sequence is controlled in the prior art, it is easy to cause the front mold insert needle to collide with the rear mold slide, causing the stamping mold to be damaged. The rear mold slide and the front mold insert are core components, and a new manufacturing is required after the collision, resulting in an increase in delivery time and cost.
A protective rod structure for passing through the rear module slider is designed. By setting up a protective rod with a smaller angle than the insert sealing element, the front mold insert is protected. When opening and closing the mold, the front mold insert moves faster than the protection rod and has a larger gap, so as to protect the sealing surface from damage.
This structure effectively protects the sealing surface, avoids the collision between the front mold insert and the rear mold slide, reduces maintenance costs, and simplifies the movement of the mold structure, making it more stable.
Smart Images
Figure CN222681643U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of molds, in particular to a protection rod structure of a front mold insert passing through a rear mold sliding block. Background Art
[0002] Injection molding products such as Figure 1 As shown, there are two small holes 00 on the top of the product. During molding, the rear mold slider 01 is required to press the product from the side, and the front mold insert 02 vertically passes through the rear mold slider 01 and is inserted into the small hole position. Only then can the two small holes 00 be molded. The molding principle is as follows Figure 2 shown.
[0003] The prior art is to control the opening and closing of the slide block by the oil cylinder 03, thereby controlling the extraction sequence of the front mold insert pin 01. The mold opening action: the front mold opens (the front mold insert pin is extracted synchronously) → the oil cylinder retreats (the rear mold slide block is extracted) → the product is ejected; the mold closing action: the oil cylinder advances (the rear mold slide block is closed in place) → the mold is closed (the front mold insert pin is inserted into the rear mold slide block synchronously) → the product is formed. Figure 3 As shown, the prior art has the following defects: the existing technology mainly controls the opening and closing sequence of the mold through machine signals, cylinders and other structures. If these signals fail, or during the initial manual debugging stage of the mold trial, it is easy to cause the front mold insert pin to collide with the rear mold slider, causing damage to the die. The rear mold slider and the front mold insert are the core components of the mold. If they are damaged, they need to be remade, which will result in a huge loss of delivery time and cost of remaking.
[0004] Based on the above defects and shortcomings, it is necessary to improve the existing technology and design a protection rod structure in which a front mold insert passes through a rear mold slider. Utility Model Content
[0005] The main technical problem solved by the utility model is to provide a protection rod structure for a front mold insert passing through a rear mold slider, and the protection rod is designed to have a smaller sealing angle than the insert to protect the front mold insert. When opening and closing the mold, the front mold insert moves faster than the protection rod and the gap is larger, thereby protecting the sealing surface from damage.
[0006] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide a front mold insert passing through a rear mold slider protection rod structure, the front mold insert passing through the rear mold slider protection rod structure includes a rear mold slider and a front mold insert, the front mold insert vertically passes through the rear mold slider, and also includes a rear mold slider seat connected to the rear mold slider, an inclined guide column that drives the rear mold slider seat to move, a shovel base connected to the rear mold slider seat, and a protection rod vertically inserted between the rear mold slider seat and the shovel base, a front mold insert extension block is installed on the upper end of the front mold insert, the front mold insert extension block, the inclined guide column and the protection rod are arranged on the upper mold of the molding mold, a protective inclined surface is arranged on the side of the protection rod close to the rear mold slider seat, and sealing inclined surfaces are arranged on both sides of the front mold insert, and the angle of the protective inclined surface is smaller than the angle of the sealing inclined surface.
[0007] Preferably, the protective bevel angle is set to 3°, and the sealing bevel angle is set to 8°.
[0008] Preferably, a wear-resistant block is installed at the connecting surface between the shovel base and the rear mold slider seat, and a side of the shovel base close to the rear mold slider seat is provided with an avoidance groove opposite to the protection rod.
[0009] Preferably, the front mold insert and the front mold insert extension block above it adopt a split assembly structure, a boss is provided at the upper end of the front mold insert, a groove matching the boss is provided at the lower end of the front mold insert extension block, and the front mold insert and the front mold insert extension block are fastened together by screws.
[0010] Compared with the prior art, the beneficial effects of the utility model are:
[0011] Design a protection rod with a smaller angle than the insert sealing angle to protect the front mold insert. When opening and closing the mold, the front mold insert moves faster than the protection rod and the gap is larger, thereby protecting the sealing surface from damage. This rigid structure does not take up too much space and can make the mold structure simple and stable.
[0012] The protection rod and the front mold insert extension block are easy to repair and replace. They are not the core parts of product molding and are made of general materials. Even if the mold is hit, the maintenance cost is low. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 This is a schematic diagram of the product structure.
[0014] Figure 2 This is the principle diagram of forming small holes on the top surface of the product.
[0015] Figure 3 It is a schematic diagram of the top surface small hole forming structure of the prior art product.
[0016] Figure 4 It is a schematic diagram of a protection rod structure in which a front mold insert passes through a rear mold slider.
[0017] Figure 5 The present invention is a cross-sectional view of a front mold insert passing through a rear mold slider protection rod structure.
[0018] Figure 6 This is a physical cross-sectional view of a front mold insert passing through a rear mold slider protection rod structure.
[0019] Figure 7 Schematic diagram of mold draft increment calculation.
[0020] Among them, 00, small hole, 01, rear mold slider, 02, front mold insert, 020, sealing slope, 03, cylinder, 1, rear mold slider seat, 2, inclined guide column, 3, shovel base, 4, protection rod, 40, protection slope, 5, front mold insert extension block, 6, wear-resistant block. DETAILED DESCRIPTION
[0021] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.
[0022] See also Figures 4 to 7 , the utility model embodiment includes:
[0023] A front mold insert passing through a rear mold slider protection rod structure, the front mold insert passing through a rear mold slider protection rod structure comprises a rear mold slider 01 and a front mold insert 02, the front mold insert 02 vertically passes through the rear mold slider 01, and is characterized in that it also includes a rear mold slider seat 1 connected to the rear mold slider 01, an inclined guide column 2 that drives the rear mold slider seat 1 to move, a shovel base 3 connected to the rear mold slider seat 1, and a protection rod 4 vertically inserted between the rear mold slider seat 1 and the shovel base 3, a front mold insert extension block 5 is installed on the upper end of the front mold insert 02, the front mold insert extension block 5, the inclined guide column 2 and the protection rod 4 are arranged on the upper mold of the molding mold, a protection slope 40 is arranged on the side of the protection rod 4 close to the rear mold slider seat 1, and sealing slopes 020 are arranged on both sides of the front mold insert 02, the angle of the protection slope 40 is smaller than the angle of the sealing slope 020, and the angle of the protection slope is set to 3° , the sealing bevel angle is set to 8°, when closing the mold: the protection rod 4 will contact the rear mold slider seat 1 first because of the small angle of the protection bevel 40, and the 8° front mold insert 02 will contact the rear mold slider 1 later due to the large angle, that is, if the 3° protection rod 4 can smoothly close the mold downward, then the 8° front mold insert 02 can also be smoothly closed and enter the rear mold slider 01 when it contacts later. On the contrary, if abnormal mold closing is encountered, the 3° protection rod 4 will not be able to close the mold downward, and will support the rear mold slider base 1, so that the 8° front mold insert 02 that is closed one step later will also be unable to close the mold, and the machine alarm will be paused to check the fault before closing the mold; the rear mold slider and the front mold insert are the core components of the mold. If they are damaged, they need to be newly made, which will cause huge loss in delivery time and new manufacturing cost. The protection rod 4 is made of a moving material and is not a core component. Even if it is hit, it is easy to repair and the loss is small.
[0024] The front mold insert 02 and the front mold insert extension block 5 above it adopt a split assembly structure, the front mold insert 02 is provided with a boss at the upper end, and the front mold insert extension block 5 is provided with a groove matching the boss at the lower end, the front mold insert 02 and the front mold insert extension block 5 are locked together by screws, and since the front mold insert 02 is a precision machined part and assembled in a split manner, the front mold insert 02 can be opened and closed with the upper mold through the front mold insert extension block 5, and the front mold insert extension block 5 can be replaced even if the mold is hit.
[0025] A wear-resistant block 6 is installed at the connecting surface between the shovel base 3 and the rear mold slider seat 1, which is convenient for replacement after friction damage. A side of the shovel base 3 close to the rear mold slider seat 1 is provided with an avoidance groove opposite to the protection rod 4.
[0026] The utility model provides a mold opening action in which a front mold insert passes through a rear mold slider and a protective rod structure: when the front mold is opened, that is, the upper mold is opened, the front mold insert 02 and the protective rod 4 are pulled out synchronously, and the inclined guide column 2 moves upward to drive the rear mold slider seat 1 to slide backward, and the rear mold slider seat 1 drives the rear mold slider 01 to be pulled out horizontally to eject the product; a mold closing action: when the front mold is closed, that is, the upper mold is closed, and the inclined guide column 2 moves downward to drive the rear mold slider seat 1 to move toward the product cavity direction, and drives the front mold insert 02 to move forward. At the same time, the front mold insert 02 and the protective rod 4 are inserted into place in sequence as the upper mold moves downward. The protective rod 4 will contact the rear mold slider seat 1 first because the angle of the protective inclined surface 40 is small, and the 8° front mold insert 02 will contact the rear mold slider 1 from behind because of the large angle, and the mold is closed.
[0027] The draft increment of the protection rod 4 and the front mold insert 02 is as follows Figure 7 As shown, for the same height of movement, the larger the angle, the faster the movement and the larger the gap. When opening and closing the mold, the front mold insert 02 moves faster than the protection rod 4 and the gap is larger, thereby protecting the sealing surface from damage.
[0028] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. A front mold insert passing through a rear mold slider protection rod structure, comprising a rear mold slider and a front mold insert, wherein the front mold insert vertically passes through the rear mold slider, and is characterized in that: It also includes a rear mold slider seat connected to the rear mold slider, an inclined guide column that drives the rear mold slider seat to move, a shovel base connected to the rear mold slider seat, and a protection rod vertically inserted between the rear mold slider seat and the shovel base. A front mold insert extension block is installed on the upper end of the front mold insert. The front mold insert extension block, the inclined guide column and the protection rod are arranged on the upper mold of the molding mold. A protective slope is arranged on the side of the protection rod close to the rear mold slider seat, and sealing slopes are arranged on both sides of the front mold insert, and the angle of the protective slope is smaller than the angle of the sealing slope.
2. A front mold insert passing through a rear mold slider protection rod structure according to claim 1, characterized in that: The protective bevel angle is set to 3°, and the sealing bevel angle is set to 8°.
3. A front mold insert passing through a rear mold slider protection rod structure according to claim 1, characterized in that: A wear-resistant block is installed at the connection surface between the shovel base and the rear mold sliding block seat, and a side of the shovel base close to the rear mold sliding block seat is provided with an avoidance groove opposite to the protection rod.
4. A front mold insert passing through a rear mold slider protection rod structure according to claim 1, characterized in that: The front mold insert and the front mold insert extension block above it adopt a split assembly structure, a boss is arranged at the upper end of the front mold insert, a groove matching with the boss is opened at the lower end of the front mold insert extension block, and the front mold insert and the front mold insert extension block are fastened together by screws.