A pulp molding press

Abstract

The utility model discloses a kind of paper pulp moulding compression forming device, including base and compression forming part;The compression forming part is set at the top of base, the compression forming part has the bottom plate being set at the top of base, the top of the bottom plate is transversely slidably provided with four lower compression molds, four the lower compression mold slidingly fits into integral mold, the top of the base is rotatably embedded with transmission ring, the transmission ring is slidably connected with the bottom of four lower compression molds, the transmission ring rotates to drive four lower compression molds displacement, the top of the bottom plate is provided with support frame, the support frame is vertically slidably provided with upper compression mold, the top of the support frame is provided with hydraulic telescopic rod to drive upper compression mold up and down displacement.The utility model is provided with compression forming part, can be driven four lower compression molds synchronous sliding by the rotation of transmission ring, realize the opening and closing of mould, so that the four side surfaces of moulding simultaneously separate from mould, improve the demoulding efficiency of moulding.

Description

Technical Field

[0001] This utility model relates to the field of pulp molding technology, specifically a pulp molding device. Background Technology

[0002] Pulp molding is an environmentally friendly packaging material manufacturing process that uses plant fibers such as waste paper, bamboo pulp, sugarcane pulp, and wood pulp as raw materials. Through processes such as pulp preparation, suction filtration molding, pressing and dewatering, and hot pressing and shaping, various packaging products (such as egg cartons, food containers, and cushioning pads for electronic products) are produced. It is a technology for obtaining ideal packaging materials. The products can be completely degraded after use and disposal, and have many advantages such as being green, environmentally friendly, biodegradable, and recyclable. It has become an emerging environmentally friendly packaging material.

[0003] Existing pulp molding equipment requires removing the molded pulp from the mold after molding. Because the wet pulp blank adheres tightly to the mold after drying, the strong adhesion results in high resistance to manual or mechanical demolding, affecting the demolding rate. Utility Model Content

[0004] The purpose of this invention is to provide a pulp molding and pressing device to solve the problems mentioned in the background art.

[0005] To solve the above problems, this utility model provides the following technical solution: a pulp molding and pressing device, comprising a base and a pressing section:

[0006] The forming part is located on the top of the base. The forming part has a base plate located on the top of the base. Four lower pressing dies are slidably arranged on the top of the base plate. The four lower pressing dies are slidably assembled into a whole mold. A transmission ring is rotatably embedded on the top of the base. The transmission ring is slidably connected to the bottom of the four lower pressing dies. The rotation of the transmission ring drives the four lower pressing dies to move. A support frame is provided on the top of the base plate. An upper pressing die is slidably arranged vertically in the support frame. A hydraulic telescopic rod is provided on the top of the support frame to drive the upper pressing die to move up and down.

[0007] By adopting the above technical solution, the rotation of the transmission ring can drive the four lower molds to slide synchronously, thereby opening and closing the mold and allowing the four sides of the molded part to detach from the mold at the same time, thus improving the demolding efficiency of the molded part.

[0008] Preferably, the base also has a rotating groove formed on the top of the base, and the transmission ring is embedded in the rotating groove and rotatably connected to the base.

[0009] By adopting the above technical solution, the rotating groove can be used to stably support the transmission ring, allowing it to rotate smoothly on the base.

[0010] Preferably, the forming part also has transmission teeth disposed on the side of the transmission ring, a gear is rotatably disposed inside the base, a motor is disposed inside the base, the output end of the motor is connected to the gear, and the gear meshes with the transmission teeth.

[0011] By adopting the above technical solution, the gear can be driven to rotate by the motor, which in turn drives the transmission gear to rotate the transmission ring.

[0012] Preferably, the forming part also has four sliding grooves formed on the top surface of the base plate. The four sliding grooves are arranged in a central rotational symmetry structure around the center of the base plate. The bottom of the lower die is provided with a slider and is embedded in the sliding groove to slide and connect with the base plate.

[0013] By adopting the above technical solution, the sliding trajectory of the lower die can be limited by the slide groove, ensuring that the four lower dies are assembled or separated synchronously and accurately.

[0014] Preferably, the forming part also has a drive shaft disposed at the bottom of the lower die, and the top of the drive ring has four drive grooves, and the four drive shafts are correspondingly embedded in the four drive grooves and slidably connected to the drive ring.

[0015] By adopting the above technical solution, the rotational motion can be converted into the radial linear motion of the lower die through the cooperation of the transmission groove on the transmission ring and the transmission shaft.

[0016] Preferably, the forming part also has a sliding hole at the center of the base plate, and a push rod is vertically slidably embedded in the sliding hole.

[0017] By adopting the above technical solution, the push rod can be moved up and down in the sliding hole to realize the ejection of the molded pulp product.

[0018] Preferably, the forming part further has a connector a disposed at the bottom of the lower die, a connecting rod rotatably disposed at the bottom of the connector a, and a connector b disposed on the side of the push rod, the connector b being rotatably connected to the end of the connecting rod away from the connector a.

[0019] By adopting the above technical solution, the sliding of the lower die and the lifting of the push rod can be linked by the connecting rod to achieve synchronous action of die opening and closing and product ejection.

[0020] Compared with the prior art, the beneficial effects of this utility model are: by setting a pressing part, the rotation of the transmission ring can drive the four lower pressing molds to slide synchronously, realize the opening and closing of the mold, and make the four sides of the molded part detach from the mold at the same time, thereby improving the demolding efficiency of the molding; by linking the sliding of the lower pressing molds with the lifting and lowering of the push rod through the connecting rod, the opening and closing of the mold and the ejection of the product are synchronized, thereby improving the demolding efficiency of the molding. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this application;

[0022] Figure 2 This is a schematic diagram of the overall cross-sectional structure of this application;

[0023] Figure 3 This is a schematic diagram of the overall cross-sectional structure of this application;

[0024] Figure 4 This is a schematic diagram of the connection structure between the lower die and the transmission ring in this application;

[0025] Figure 5 This is a schematic diagram of the connection structure between the lower die and the base plate in this application;

[0026] Figure 6 This is a schematic diagram of the connection structure between the transmission ring and the base.

[0027] In the diagram: 1. Base; 101. Rotating groove; 2. Forming section; 201. Base plate; 202. Support frame; 203. Upper die; 204. Hydraulic telescopic rod; 205. Slide groove; 206. Slide hole; 207. Lower die; 208. Drive shaft; 209. Connector a; 210. Drive ring; 211. Drive groove; 212. Drive gear; 213. Gear; 214. Motor; 215. Connecting rod; 216. Push rod; 217. Connector b. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Example 1

[0030] Please see Figure 1 , Figure 2 and Figure 3 This embodiment provides a technical solution: a pulp molding and pressing device, including a base 1 and a pressing section 2.

[0031] The forming part 2 is located on the top of the base 1. The forming part 2 has a base plate 201 located on the top of the base 1. The base plate 201 is installed on the top of the base 1 by bolts. Four lower pressing molds 207 are slidably arranged on the top of the base plate 201. The four lower pressing molds 207 are slidably assembled into a whole mold. A transmission ring 210 is rotatably embedded in the top of the base 1. A rotation groove 101 is opened in the top of the base 1. The transmission ring 210 is embedded in the rotation groove 101 and rotatably connected to the base 1. The rotation groove 101 can stably support the transmission ring 210, so that it can rotate smoothly on the base 1. The transmission ring 210 is slidably connected to the bottom of the four lower pressing molds 207. The rotation of the transmission ring 210 drives the four lower pressing molds 207. The displacement is achieved by a support frame 202 on the top of the base plate 201, with an upper pressure mold 203 vertically sliding inside the support frame 202. A hydraulic telescopic rod 204 is installed on the top of the support frame 202 to drive the upper pressure mold 203 to move up and down. The hydraulic telescopic rod 204 is a device that uses liquid pressure to transmit power and achieve linear motion. Its basic principle is based on Pascal's law, which states that in a closed liquid system, the pressure applied to the liquid will be evenly transmitted to all parts of the system. This is the prior art and will not be elaborated further below. The rotation of the transmission ring 210 can drive the four lower pressure molds 207 to slide synchronously, thereby opening and closing the mold and allowing the four sides of the molded part to detach from the mold simultaneously, improving the demolding efficiency of the molded part.

[0032] Example 2

[0033] Please see Figure 4 , Figure 5 and Figure 6 This embodiment provides a technical solution: a pulp molding and pressing device, including a pressing section 2:

[0034] The transmission ring 210 of the forming part 2 has transmission teeth 212 machined on its side. The gear 213 is installed inside the base 1 through a bearing seat. The motor 214 is fixedly installed inside the base 1 through a flange. The output shaft of the motor 214 is directly connected to the shaft end of the gear 213 by a coupling. The gear 213 meshes with the transmission teeth 212. The motor 214 can drive the gear 213 to rotate, thereby driving the transmission teeth 212 to make the transmission ring 210 rotate.

[0035] Four grooves 205 are provided on the top surface of the base plate 201. The four grooves 205 are in a central rotational symmetry structure around the center of the base plate 201. The bottom of the lower pressing mold 207 is provided with a slider and is embedded in the groove 205 and slidably connected to the base plate 201. The sliding trajectory of the lower pressing mold 207 can be restricted by the groove 205 to ensure that the four lower pressing molds 207 are synchronously and accurately assembled or separated.

[0036] A drive shaft 208 is integrally provided at the bottom of the lower die 207. The top of the drive ring 210 has four drive grooves 211. The four drive shafts 208 are correspondingly embedded in the four drive grooves 211 and slidably connected to the drive ring 210. The rotational motion can be converted into the radial linear motion of the lower die 207 by cooperating with the drive shafts 208 through the drive grooves 211 on the drive ring 210.

[0037] A sliding hole 206 is machined at the center of the base plate 201. A push rod 216 is vertically slidably embedded in the sliding hole 206. The push rod 216 can be used to move up and down in the sliding hole 206 to eject the molded pulp product.

[0038] A connector a209 is welded to the bottom of the lower die 207. The bottom of the connector a209 is rotatably connected to one end of the connecting rod 215 via a pin. A connector b217 is provided on the side of the push rod 216. The connector b217 is rotatably connected to the end of the connecting rod 215 away from the connector a209 via a pin. The sliding of the lower die 207 and the lifting of the push rod 216 can be linked by the connecting rod 215 to realize the synchronous action of mold opening and closing and product ejection.

[0039] Working principle: First, the pulp raw material is placed in the integral mold formed by the four assembled lower pressing dies 207. Then, the hydraulic telescopic rod 204 is activated, which drives the upper pressing die 203 to move vertically downward within the support frame 202, cooperating with the lower pressing dies 207 to perform a pressing operation on the pulp raw material. After pressing is completed, the hydraulic telescopic rod 204 drives the upper pressing die 203 to move vertically upward within the support frame 202. Then, the motor 214 is activated, and the output shaft of the motor 214 drives the gear 213 directly connected to its shaft end to rotate. Since the gear 213 meshes with the transmission teeth 212 machined on the side of the transmission ring 210, the rotation of the gear 213 will drive the transmission ring 210 to rotate smoothly within the rotating groove 101. When the transmission ring 210 rotates, the four transmission grooves 211 opened on its top cooperate with the transmission shaft 208 integrally set at the bottom of the lower pressing die 207 to rotate the transmission ring 210. The rotational motion is converted into radial linear motion of the lower die 207. Because the four slides 205 are centrally rotationally symmetrical around the center of the base plate 201, and the bottom slider of the lower die 207 is embedded in the slide 205 and slidably connected to the base plate 201, the four lower dies 207 will move away from the pressed molded material along the slide 205. During the displacement of the lower die 207, the connector a209 welded at the bottom of the lower die 207 is rotatably connected to one end of the connecting rod 215 through a pin. The end of the connecting rod 215 away from the connector a209 is rotatably connected to the connector b217 on the side of the push rod 216 through a pin. This linkage mechanism will link the sliding of the lower die 207 with the lifting of the push rod 216, so that the push rod 216 moves upward in the slide hole 206, thereby ejecting the molded pulp product, realizing the synchronous action of mold opening and closing and product ejection, and improving the demolding efficiency of the molded material.

[0040] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pulp molding apparatus, characterized in that, include: Base (1); A molding section (2) is provided on the top of the base (1). The molding section (2) has a base plate (201) on the top of the base (1). Four lower molding dies (207) are slidably arranged on the top of the base plate (201). The four lower molding dies (207) are slidably assembled into an integral mold. A transmission ring (210) is rotatably embedded on the top of the base (1). The transmission ring (210) is slidably connected to the bottom of the four lower molding dies (207). The transmission ring (210) rotates to drive the four lower molding dies (207) to move. A support frame (202) is provided on the top of the base plate (201). An upper molding die (203) is slidably arranged vertically inside the support frame (202). A hydraulic telescopic rod (204) is provided on the top of the support frame (202) to drive the upper molding die (203) to move up and down.

2. The pulp molding apparatus according to claim 1, characterized in that: The base (1) also has a rotating groove (101) opened on the top of the base (1), and the transmission ring (210) is embedded in the rotating groove (101) and rotatably connected to the base (1).

3. The pulp molding apparatus according to claim 2, characterized in that: The forming part (2) also has a transmission tooth (212) disposed on the side of the transmission ring (210). A gear (213) is rotatably disposed inside the base (1). A motor (214) is disposed inside the base (1). The output end of the motor (214) is connected to the gear (213). The gear (213) meshes with the transmission tooth (212).

4. The pulp molding apparatus according to claim 1, characterized in that: The forming part (2) also has four grooves (205) on the top surface of the base plate (201). The four grooves (205) are arranged in a central rotational symmetry structure around the center of the base plate (201). The bottom of the lower die (207) is provided with a slider and is embedded in the groove (205) and slidably connected to the base plate (201).

5. The pulp molding apparatus according to claim 1, characterized in that: The forming part (2) also has a drive shaft (208) located at the bottom of the lower die (207). The top of the drive ring (210) has four drive grooves (211), and the four drive shafts (208) are correspondingly embedded in the four drive grooves (211) and slidably connected to the drive ring (210).

6. The pulp molding apparatus according to claim 1, characterized in that: The forming part (2) also has a sliding hole (206) opened at the center of the base plate (201), and a push rod (216) is vertically slidably embedded in the sliding hole (206).

7. A pulp molding apparatus according to claim 6, characterized in that: The forming part (2) also has a connector a (209) provided at the bottom of the lower die (207), a connecting rod (215) is rotatably provided at the bottom of the connector a (209), and a connector b (217) is provided on the side of the push rod (216), the connector b (217) is rotatably connected to the end of the connecting rod (215) away from the connector a (209).

Images