Press fit box for forming automobile EPS tool box
By designing a liftable pressing plate and an automated unloading system, the problems of uneven pressure and safety of the pressing plate were solved, realizing efficient and safe EPS toolbox molding, and improving molding quality and work efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-07
- Publication Date
- 2026-03-03
AI Technical Summary
The existing pressing plates cannot provide sufficient or uniform pressure when the mold size changes, resulting in unstable molding quality, increased defect rate, and safety hazards during replacement.
A pressing box for forming automotive EPS toolboxes was designed. It adopts a lifting pressing plate, trapezoidal block and rubber pad structure, combined with hydraulic and pneumatic systems to achieve safe and reliable operation of the pressing plate, and automatically discharges material through contact switches and telescopic cylinders.
It improved molding quality, reduced defect rate, enhanced operational safety and work efficiency, and reduced equipment maintenance costs.
Smart Images

Figure CN223961593U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of toolbox manufacturing technology, and in particular to a pressing box for molding automotive EPS toolboxes. Background Technology
[0002] The pressing box for forming EPS tool boxes for automobiles is a key production equipment designed specifically for the automotive manufacturing industry. EPS foam material is placed into the corresponding pressing device for extrusion molding to produce EPS tool boxes that meet specific requirements and provide excellent protection when transporting objects.
[0003] Before using the pressing box, a comprehensive inspection of the equipment must be conducted to ensure that all components are intact, tightly connected, and free from looseness or wear. Check the operation of key components such as the hydraulic cylinder, pressing plate, and stop gate. Based on the required size and shape of the EPS toolbox, select a suitable mold and install it inside the pressing box, ensuring the mold is securely installed and matches the internal space of the pressing box. Place the pre-cut EPS foam material into the mold. If necessary, apply an appropriate amount of release agent to the EPS foam material. Turn on the power or air supply to the hydraulic cylinder and start it. The output shaft of the hydraulic cylinder will drive the pressing plate downwards to press the EPS foam material placed in the mold. After the pressing process is complete, the hydraulic cylinder will slowly raise the pressing plate back to its original position. Rotate the stop gate of the pressing box to open it and remove the molded EPS toolbox. Gently remove the molded EPS toolbox from the mold.
[0004] However, when the existing mold size changes, the pressing plate may not be able to provide sufficient pressure or uniform pressure distribution, resulting in unstable molding quality. This leads to problems such as dimensional deviations and surface defects in the molded products, increasing the defect rate. This not only affects product quality but may also increase the cost of subsequent processing. Operators need to use more tools to replace the pressing plate. Since the pressing plate is very heavy, there is a risk of accidentally injuring operators during the replacement process, which reduces work efficiency and safety. Utility Model Content
[0005] (a) Technical problems to be solved
[0006] This solves the problem of requiring many tools for installing the pressing plate, avoids mismatch between the pressing plate and the mold, reduces the impact on the product, and improves the yield rate and work efficiency.
[0007] (II) Technical Solution
[0008] In view of the above-mentioned problems with installing different pressing plates, this utility model is proposed.
[0009] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a pressing box for molding an automotive EPS toolbox, comprising a machine body, a box body fixedly installed at the top of the machine body, a conveyor belt installed in the inner cavity of the machine body, a molding groove fixedly connected to the inner wall of the box body, a pressing plate that can be lifted and moved slidably connected to the inner wall of the box body, a push plate slidably connected to the inner wall of the molding groove, a partition that can be lifted and moved slidably connected to the inner wall of the box body, a contact head fixedly installed at the top of the partition head, and a contact switch slidably connected to the top of the contact head.
[0010] As a preferred embodiment of the pressing box for forming an automotive EPS toolbox according to this utility model, a hydraulic cylinder is fixedly installed at the top of the box body, a main rod is fixedly connected to the output end of the hydraulic cylinder, an mounting plate that is snapped into the outer wall of the pressing plate is fixedly connected to the bottom end of the main rod, and a plurality of trapezoidal blocks arranged in a circular array and slidably connected to the pressing plate are slidably connected to the inner wall of the mounting plate.
[0011] As a preferred embodiment of the pressing box for molding an automotive EPS toolbox according to this utility model, two springs in a mirror-distributed manner are connected between the outer wall of the trapezoidal block and the inner wall of the mounting plate, a slide cylinder that is slidably connected to the outer wall of the mounting plate is slidably connected to the outer wall of the trapezoidal block, and two evenly distributed cooling fans are fixedly connected to the inner wall of the box.
[0012] As a preferred embodiment of the pressing box for molding an automotive EPS toolbox according to this utility model, the inner wall of the mounting plate is fixedly connected to two rubber pads arranged in a circular array, the top of the pressing plate is fixedly connected to a baffle that is slidably connected to the top of the rubber pads, the outer wall of the box is fixedly installed with a feeding box, and the bottom of the feeding box is provided with a conveying pipe that communicates with the inner wall of the molding groove.
[0013] As a preferred embodiment of the pressing box for molding an automotive EPS toolbox according to this utility model, a telescopic cylinder is fixedly installed at the top of the machine body, and a push rod that is fixedly connected to the outer wall of the push plate is fixedly connected to the output end of the telescopic cylinder. A sliding plate is slidably connected to the inner wall of the molding groove.
[0014] As a preferred embodiment of the pressing box for molding an automotive EPS toolbox according to this utility model, the outer wall of the sliding plate is fixedly connected to a connecting rod that is fixedly connected to the outer wall of the partition, the outer wall of the partition is fixedly connected to a handle that is slidably connected to the outer wall of the box body, and the outer wall of the box body is fixedly connected to a rectangular plate that is slidably connected to the outer wall of the handle.
[0015] The beneficial effects of this utility model are:
[0016] 1. By rotating the slide cylinder, the spring is released, causing the trapezoidal block to disengage from the clamping plate. The clamping plate falls due to gravity, and the rubber pad contacts the baffle, preventing the clamping plate from falling directly and injuring workers or equipment. This improves the safety of the operation process, reduces equipment maintenance, and lowers maintenance costs. Rotating the clamping plate again causes the baffle to disengage from the rubber pad, thus separating the clamping plate from the rubber pad. The operation is simple and safe, improving work efficiency.
[0017] 2. By manually operating the handle, the partition slides while the sliding plate moves synchronously. During the movement of the partition, the contact points on it precisely touch the contact switch, triggering the switch to send an electrical signal to the control system. This activates the telescopic cylinder, which, upon receiving the signal, pushes the formed toolbox forward until it contacts the conveyor belt, ready for subsequent workers to collect and process. This avoids situations where operators have difficulty unloading the formed toolbox, thus improving work efficiency. Attached Figure Description
[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:
[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0020] Figure 2 This is a schematic cross-sectional view of the overall structure of this utility model.
[0021] Figure 3 This is a schematic diagram of the trapezoidal block installation structure of this utility model.
[0022] Figure 4 This is a schematic diagram of the installation structure of the rubber pad of this utility model.
[0023] Figure 5 This is a schematic diagram of the sliding plate installation structure of this utility model.
[0024] Explanation of reference numerals in the attached drawings: 1. Machine body; 2. Housing; 3. Feed box; 4. Mounting plate; 5. Conveyor belt; 6. Partition plate; 7. Conveying pipe; 8. Forming groove; 9. Push plate; 10. Connecting rod; 11. Sliding plate; 12. Handle; 13. Contact head; 14. Contact switch; 15. Cooling fan; 16. Pressing plate; 17. Trapezoidal block; 18. Spring; 19. Slide cylinder; 20. Baffle; 21. Rubber pad. Detailed Implementation
[0025] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.
[0026] Example 1
[0027] Reference Figure 1-4 This is the first embodiment of the present invention, which provides a pressing box for molding an automotive EPS toolbox, including a body 1, a box 2 fixedly installed at the top of the body 1, a conveyor belt 5 installed inside the body 1, a servo motor inside the body 1 controlling the rotation of the conveyor belt 5, a molding groove 8 fixedly connected to the inner wall of the box 2, a pressing plate 16 that can be lifted and moved slidably connected to the inner wall of the box 2, a push plate 9 slidably connected to the inner wall of the molding groove 8, the push plate 9 being used to push the molding toolbox to move, a partition 6 that can be lifted and moved slidably connected to the inner wall of the box 2, a contact head 13 fixedly installed at the top of the partition 6, a contact switch 14 slidably connected to the top of the contact head 13, the contact head 13 and the contact switch being far apart to avoid accidental activation due to vibration of the partition 6, and the contact switch 14 being used to generate an electrical signal to the controller.
[0028] A hydraulic cylinder is fixedly installed at the top of the housing 2. The output end of the hydraulic cylinder is fixedly connected to a main rod. The bottom end of the main rod is fixedly connected to an installation plate 4 that is engaged with the outer wall of the pressing plate 16. Multiple trapezoidal blocks 17 arranged in a circular array and slidably connected to the pressing plate 16 are slidably connected to the inner wall of the installation plate 4. The outer wall of the trapezoidal blocks 17 is provided with a protrusion plate to facilitate pushing the spring 18.
[0029] Two mirror-distributed springs 18 are connected between the outer wall of the trapezoidal block 17 and the inner wall of the mounting plate 4. The springs 18 are used to push the trapezoidal block 17. The springs 18 are highly elastic. The outer wall of the mounting plate 4 is slidably connected to a slide cylinder 19 that is slidably connected to the outer wall of the trapezoidal block 17. The inner wall of the slide cylinder 19 is provided with a protrusion that pushes the trapezoidal block 17. The inner wall of the housing 2 is fixedly connected to two evenly distributed cooling fans 15. The cooling fans 15 are used to accelerate the cooling time of molding.
[0030] The inner wall of the mounting plate 4 is fixedly connected to two rubber pads 21 arranged in a circular array. The rubber pads 21 are used to buffer the falling of the pressing plate 16. The bottom end of the rubber pads 21 is provided with a base plate fixedly connected to the inner wall of the mounting plate 4. The top end of the pressing plate 16 is fixedly connected to a baffle 20 that is slidably connected to the top end of the rubber pads 21. The outer wall of the box 2 is fixedly installed with a feeding box 3. The bottom end of the feeding box 3 is provided with a conveying pipe 7 that communicates with the inner wall of the forming groove 8.
[0031] During use, the pressing plate 16 is replaced according to the existing mold. The rotating slide cylinder 19 drives the protrusion to disengage from the trapezoidal block 17. The spring 18 releases its elastic force, pushing the trapezoidal block 17 away from the inner wall of the pressing plate 16. The pressing plate 16 is affected by gravity, causing the baffle 20 to fall. The baffle 20 contacts the rubber pad 21. The pressing plate 16 is rotated to drive the baffle 20 to disengage from the rubber pad 21. During installation, the pressing plate 16 is inserted into the mounting plate 4 and rotated to keep the baffle 20 and the rubber pad 21 on the same longitudinal axis. The pressing plate 16 is continued to be pushed. The rotating slide cylinder 19 uses the protrusion to squeeze the trapezoidal block 17 into the inner wall of the pressing plate 16. The feeding box 3 feeds the raw material into the inner wall of the forming tank 8 through the conveying pipe 7. The hydraulic cylinder drives the pressing plate 16 to perform pressing and molding. The cooling fan 15 accelerates the airflow in the box 2. If the cooling is insufficient, the product may deform or shrink unevenly. Accelerating the airflow may help to remove heat faster, thereby shortening the cooling time, improving production efficiency, and accelerating the cooling and molding of the toolbox.
[0032] Example 2
[0033] Reference Figure 1 , Figure 2 and Figure 5 This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that: a telescopic cylinder is fixedly installed at the top of the body 1. The telescopic cylinder is used to push the push plate 9 to move. The output end of the telescopic cylinder is fixedly connected to a push rod that is fixedly connected to the outer wall of the push plate 9. A sliding plate 11 is slidably connected to the inner wall of the forming groove 8.
[0034] A connecting rod 10 is fixedly connected to the outer wall of the sliding plate 11 and to the outer wall of the partition 6. The connecting rod 10 is used to drive the sliding plate 11 to move. A handle 12 is fixedly connected to the outer wall of the partition 6 and is slidably connected to the outer wall of the box 2. The handle 12 can rotate. A rectangular plate is fixedly connected to the outer wall of the box 2 and is slidably connected to the outer wall of the handle 12. The rectangular plate is used to block the handle 12.
[0035] During use, pulling handle 12 moves contact head 13 via partition 6. Partition 6 moves sliding plate 11 via connecting rod 10. When contact head 13 contacts contact switch 14, handle 12 is rotated to limit it to the top of the rectangular plate. At the same time, contact switch 14 randomly sends an electrical signal to the control system to activate telescopic cylinder. After responding to the signal, telescopic cylinder pushes the already formed toolbox to the top of conveyor belt 5 via push plate 9. Conveyor belt 5 carries the toolbox to subsequent workers for processing. After releasing handle 12, sliding plate 11 returns to its original position, and the operation is completed.
[0036] The remaining structure is the same as that in Example 1.
[0037] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A press box for molding an automobile EPS tool box, characterized by: The utility model relates to a kind of box type automatic pressing machine, including body (1), the top of the body (1) is fixedly installed with box (2), conveying belt (5) is installed in the cavity of the body (1), the inner wall of the box (2) is fixedly connected with profiled groove (8), the inner wall of the box (2) is slidably connected with liftable movable pressing plate (16), the inner wall of the profiled groove (8) is slidably connected with push plate (9), the inner wall of the box (2) is slidably connected with liftable movable baffle (6), the top of the baffle (6) is fixedly installed with contact head (13), the top of the contact head (13) is slidably connected with contact switch (14).
2. The pressing box for forming an automobile EPS tool box according to claim 1, characterized in that: The top of the box (2) is fixedly installed with hydraulic cylinder, the output end of the hydraulic cylinder is fixedly connected with main rod, the bottom of the main rod is fixedly connected with the outer wall of pressing plate (16) with the clamping of mounting plate (4), the inner wall of the mounting plate (4) is slidably connected with multiple trapezoidal blocks (17) that are circularly arrayed and slidably connected with pressing plate (16).
3. The pressing box for forming an EPS tool box of an automobile according to claim 2, characterized in that: Two springs (18) that are mirror image distribution are connected between the outer wall of the trapezoidal block (17) and the inner wall of the mounting plate (4), the outer wall of the mounting plate (4) is slidably connected with slide cylinder (19) slidably connected with the outer wall of trapezoidal block (17), the inner wall of the box (2) is fixedly connected with two evenly distributed cooling fans (15).
4. The pressing box for forming an EPS tool box of an automobile according to claim 2, characterized in that: The inner wall of the mounting plate (4) is fixedly connected with two rubber pads (21) that are circularly arrayed, the top of the pressing plate (16) is fixedly connected with baffle (20) slidably connected with the top of rubber pad (21), the outer wall of the box (2) is fixedly installed with feed box (3), the bottom of the feed box (3) is provided with conveying pipe (7) communicated with the inner wall of profiled groove (8).
5. The pressing box for forming an EPS tool box of an automobile according to claim 1, characterized in that: The top of the body (1) is fixedly installed with telescopic pneumatic cylinder, the output end of the telescopic pneumatic cylinder is fixedly connected with push rod fixedly connected with the outer wall of push plate (9), the inner wall of the profiled groove (8) is slidably connected with sliding plate (11).
6. The pressing box for forming an EPS tool box of an automobile according to claim 5, characterized in that: The outer wall of the sliding plate (11) is fixedly connected with connecting rod (10) fixedly connected with the outer wall of baffle (6), the outer wall of the baffle (6) is fixedly connected with handle (12) slidably connected with the outer wall of box (2), the outer wall of the box (2) is fixedly connected with rectangular plate slidably connected with the outer wall of handle (12).