Cloth pressing block structure for low-pressure injection mold

Abstract

The utility model relates to the technical field of low-pressure injection molding, and discloses a cloth pressing block structure for a low-pressure injection mold, which comprises a cavity plate and a pressing needle, the cavity plate is circumferentially connected with a plurality of mounting grooves at the bottom end of a cavity, the mounting grooves are connected with through holes, mounting cylinders are arranged in the through holes, and the pressing needle is arranged in the mounting cylinders. The mounting barrel is connected with a mounting structure capable of connecting the mounting barrel with the cavity plate, a limiting plate is arranged in the mounting barrel in a sliding connection manner, the top end of the limiting plate is connected with a pressing needle, a spring is connected between the bottom end of the limiting plate and the mounting barrel, and the limiting plate is connected with an adjusting assembly capable of adjusting the elastic coefficient of the pressing needle. Compared with the prior art, the pressing needle has the advantages that the pressing needle is convenient to disassemble, assemble and maintain, the abutting pressure of the pressing needle is convenient to adjust, and fabric is prevented from being damaged.

Description

TECHNICAL FIELD

[0001] The utility model relates to low pressure injection technology field, specifically point to a kind of cloth block structure for low pressure injection mold. BACKGROUND

[0002] Since low pressure injection mold needs to place fabric first before mold injection, then the fabric is positioned by the pressing needle of cavity plate side, and the existing pressing needle is provided with a sharp head, which can easily damage the fabric during positioning. Although the pressing needle can be elastically positioned under the action of the spring, the top pressing force of the pressing needle is fixed and cannot be adjusted under the condition of a certain displacement during mold closing. In addition, the pressing needle is not easy to disassemble after installation, reducing the practicality. SUMMARY

[0003] I. Technical problems to be solved

[0004] The technical problem to be solved by the utility model is that the top pressing force of the pressing needle is fixed and cannot be adjusted, and the pressing needle is not easy to disassemble after installation, reducing the practicality.

[0005] II. Technical solutions

[0006] To solve the above technical problems, the technical solution provided by the utility model is a cloth block structure for low pressure injection mold, comprising a cavity plate and a pressing needle. The cavity plate is connected with a plurality of installation grooves around the cavity bottom end. A through hole is connected on the installation groove. An installation cylinder is arranged in the through hole. An installation structure is connected on the installation cylinder to connect the installation cylinder with the cavity plate. A limiting plate is slidably connected in the installation cylinder. The pressing needle is connected to the top end of the limiting plate. A spring is connected between the bottom end of the limiting plate and the installation cylinder. An adjusting assembly is connected on the limiting plate to adjust the elastic coefficient of the pressing needle.

[0007] Further, the installation structure comprises an installation block matched with the installation groove. A connecting rod is connected to the bottom end of the installation cylinder. The connecting rod is connected with the installation block through threaded penetration. Locking nuts are arranged on both sides of the connecting rod. Threaded grooves are oppositely arranged on the installation groove. The locking nuts penetrate the installation block and are threadedly matched with the threaded grooves at the end. First, the installation block is matched with the installation groove, and the installation block is positioned by the cooperation of the locking nut and the threaded groove. Then, the connecting rod is introduced from the top of the through hole and penetrates the installation block. When the bottom end of the connecting rod abuts against the threaded hole in the middle of the installation block, the installation cylinder drives the connecting rod to rotate until the installation block is adjusted to the appropriate position on the connecting rod, thereby completing the installation of the installation cylinder.

[0008] Further, the adjusting assembly comprises a through hole penetrating through the length direction of the connecting rod, a threaded barrel is arranged at the bottom end of the connecting rod through threaded connection, a sliding rod is slidably arranged in the through hole, a fixed plate is arranged at the top end of the sliding rod through connection in the mounting barrel, the spring is arranged between the fixed plate and the limiting plate, the other end of the sliding rod is slidably arranged in the through hole and abuts against the bottom wall of the threaded barrel at the end, the position of the threaded barrel is adjusted by driving the threaded barrel to rotate, the bottom wall in the threaded barrel abuts against the sliding rod, the limiting plate is driven to ascend and descend by the sliding rod, and then the elastic coefficient of the spring is adjusted to adjust the abutting pressure of the pressing needle on the fabric.

[0009] Further, a handle is arranged at the bottom end of the threaded barrel, and anti-skid lines are arranged on the handle, the threaded barrel can be conveniently driven through the handle, and the friction of the handle is improved through the anti-skid lines.

[0010] Further, the top end of the pressing needle is rounded, and an anti-skid layer is arranged at the top end of the pressing needle, so that the fabric is prevented from being damaged when the pressing needle penetrates the fabric during positioning.

[0011] Further, a limiting ring is arranged at the top end of the mounting barrel, and a ring groove matched with the limiting ring is arranged at the top end of the limiting plate in the circumferential direction, the limiting ring is matched with the limiting plate in a limiting mode, the limiting plate is limited through the matched arrangement of the limiting ring, the ring groove and the limiting plate, and the limiting plate is prevented from sliding off from the top end of the mounting barrel.

[0012] III. Beneficial effects

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] The mounting structure is arranged to facilitate mounting of the mounting barrel and the pressing needle on the cavity plate, the pressing needle is conveniently disassembled and maintained, the adjusting assembly is arranged to facilitate adjustment of the abutting pressure of the pressing needle on the fabric under the elastic force of the spring, the fabric is conveniently protected, and damage is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structure schematic view of a cloth pressing block structure for a low-pressure injection mold.

[0016] Figure 2 is a sectional structure schematic view of a cloth pressing block structure for a low-pressure injection mold.

[0017] Figure 3 is Figure 2 is an enlarged structure schematic view of A in the figure.

[0018] Figure 4 is Figure 3 is an enlarged structure schematic view of B in the figure.

[0019] As shown in the figure: 1. Cavity plate, 2. Pressure pin, 3. Mounting groove, 4. Mounting cylinder, 5. Spring, 6. Mounting block, 7. Connecting rod, 8. Locking nut, 9. Threaded cylinder, 10. Slide rod, 11. Fixing plate, 12. Handle, 13. Limiting ring, 14. Limiting plate. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0021] Example 1

[0022] Combined with appendix Figure 1 , Figure 2 and Figure 3 A pressure block structure for low-pressure injection molds includes a cavity plate 1 and a pressure needle 2. The top end of the pressure needle 2 is rounded and an anti-slip layer is connected to the top end of the pressure needle 2. The cavity plate 1 is circumferentially connected with a plurality of mounting grooves 3 at the bottom end of the cavity. Through holes are connected to the mounting grooves 3 and mounting cylinders 4 are provided in the through holes.

[0023] The pressure needles in the above structure can be used to position and press the fabric, preventing the fabric from shifting during injection molding and affecting the product's performance.

[0024] Combined with appendix Figure 3 and Figure 4 The mounting cylinder 4 is connected to a mounting structure that connects the mounting cylinder 4 to the cavity plate 1. The mounting structure includes a mounting block 6 that mates with the mounting groove 3. A connecting rod 7 is connected to the bottom end of the mounting cylinder 4. The connecting rod 7 and the mounting block 6 are connected by a thread. Locking nuts 8 are provided on both sides of the connecting rod 7 on the mounting block 6. Threaded grooves are connected opposite each other on the mounting groove 3. The locking nuts 8 pass through the mounting block 6 and are threadedly engaged with the threaded grooves at their ends. A limiting plate 14 is slidably connected inside the mounting cylinder 4. A limiting ring 13 is connected to the top end of the mounting cylinder 4. A ring groove that mates with the limiting ring 13 is circumferentially connected to the top end of the limiting plate 14. The limiting ring 13 can limit the engagement of the limiting plate 14. A pressure needle 2 is connected to the top end of the limiting plate 14. A spring 5 is connected between the bottom end of the limiting plate 14 and the mounting cylinder 4.

[0025] The mounting structure described above facilitates the disassembly and maintenance of the pressure needle.

[0026] Example 2

[0027] Based on Example 1, combined with Appendix Figure 3 The limiting plate 14 is connected to an adjusting component that can adjust the elastic coefficient of the pressure needle 2. The adjusting component includes a through hole that passes through the length of the connecting rod 7. The bottom end of the connecting rod 7 is connected to a threaded cylinder 9 by a thread. A sliding rod 10 is slidably passed through the through hole. The top end of the sliding rod 10 is connected to a fixing plate 11 inside the mounting cylinder 4. The spring 5 is located between the fixing plate 11 and the limiting plate 14. The other end of the sliding rod 10 slides through the through hole and abuts against the bottom wall of the threaded cylinder 9.

[0028] The adjustment components in the above structure facilitate the adjustment of the pressure of the pressure needle, thus preventing damage to the fabric due to excessive spring force during fabric positioning.

[0029] The specific usage method is as follows:

[0030] The installation structure facilitates the mounting of the cylinder 4 and the pressure needle 2 onto the cavity plate 1, and makes it easy to disassemble and maintain the pressure needle 2.

[0031] First, the mounting block 6 is fitted with the mounting groove 3, and the mounting block 6 is positioned by the engagement of the locking nut 8 and the threaded groove.

[0032] Then, the mounting cylinder 4 drives the connecting rod 7 to rotate and be inserted from the top of the through hole through the mounting block 6. The connecting rod 7 passes through the threaded hole in the middle of the mounting block 6 until the mounting cylinder 4 is engaged with the through hole and the top of the mounting cylinder 4 is engaged with the upper surface of the cavity plate 1, thus completing the installation of the mounting cylinder 4.

[0033] Because the low-pressure injection mold needs to place the fabric before injection molding, and then the presser 2 is used to position the fabric. The top of the presser 2 is rounded and designed with an anti-slip layer to prevent the presser 2 from penetrating the fabric and causing damage when positioning the fabric.

[0034] The adjustable components facilitate the adjustment of the pressure of the pressure needle 2 on the fabric under the elastic force of the spring 5. The matching arrangement of the limiting ring 13, the ring groove, and the limiting plate 14 facilitates the limiting of the limiting plate 14, ensuring that the limiting plate 14 always abuts against the limiting ring 13 under the elastic force of the spring 5. The screw cylinder 9 is driven to rotate by the handle 12. The screw cylinder 9 adjusts its position by engaging with the threaded end of the connecting rod 7. The inner bottom wall of the screw cylinder 9 abuts against the sliding rod 10, driving the sliding rod 10 to move the fixing plate 11 up and down, thereby adjusting the elastic coefficient of the spring 5 and thus adjusting the pressure of the pressure needle 2 on the fabric, which facilitates the protection of the fabric and prevents damage.

[0035] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0036] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the following claims and their equivalents.

[0037] The above description of the present application and its embodiments has been described, which is not restrictive, and the embodiments shown in the drawings are only one of the embodiments of the present application, and the actual structure is not limited thereto. In general, if a person skilled in the art is inspired by it, without departing from the creative purpose of the present application, without creative design, similar structure and embodiments of the technical scheme should belong to the protection scope of the present application.

Claims

1. A fabric pressing block structure for a low pressure injection mold comprising a cavity plate (1) and a pressing pin (2), characterized in that: The cavity plate (1) is connected with a plurality of installation grooves (3) at the bottom end of the cavity, the installation groove (3) is connected with a through hole, the through hole is provided with an installation cylinder (4), the installation cylinder (4) is connected with an installation structure which can connect the installation cylinder (4) and the cavity plate (1), the installation cylinder (4) is connected with a limiting plate (14) which is slidably connected, the limiting plate (14) is connected with a pressing needle (2) at the top end, the limiting plate (14) is connected with a spring (5) between the bottom end and the installation cylinder (4), the limiting plate (14) is connected with an adjusting assembly which can adjust the elastic coefficient of the pressing needle (2).

2. A fabric pressing block structure for a low pressure injection mold according to claim 1, characterized in that: The installation structure includes an installation block (6) matched with the installation groove (3), the installation cylinder (4) is connected with a connecting rod (7) at the bottom end, the connecting rod (7) is connected with the installation block (6) through threaded penetration, the installation block (6) is provided with a locking nut (8) on both sides of the connecting rod (7), the installation groove (3) is provided with a threaded groove opposite, the locking nut (8) penetrates the installation block (6) and is matched with the threaded groove at the end through threads.

3. A fabric press structure for a low pressure injection mold according to claim 2, wherein: The adjusting assembly includes a through hole penetrating the length direction of the connecting rod (7), the connecting rod (7) is connected with a threaded cylinder (9) at the bottom end through threads, the through hole is slidably penetrated with a sliding rod (10), the sliding rod (10) is connected with a fixed plate (11) in the installation cylinder (4) at the top end, the spring (5) is arranged between the fixed plate (11) and the limiting plate (14), the other end of the sliding rod (10) is slidably penetrated through the through hole and abuts against the bottom wall of the threaded cylinder (9) at the end.

4. A fabric press structure for a low pressure injection mold according to claim 3, wherein: The threaded cylinder (9) is connected with a handle (12) at the bottom end, the handle (12) is connected with an anti-skid pattern.

5. A fabric press block structure for a low pressure injection mold according to claim 1, wherein: The installation cylinder (4) is connected with a limiting ring (13) at the top end, the limiting plate (14) is connected with a ring groove matched with the limiting ring (13) at the top end, the limiting ring (13) can limit the limiting plate (14).

6. A fabric press block structure for a low pressure injection mold according to claim 1, wherein: The pressing needle (2) is rounded at the top end, the pressing needle (2) is connected with an anti-skid layer at the top end.

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